SynC Standards

Automatic transfer switches rated 1000 V and below, listed to UL 1008, that move a load between a normal source and an alternate source without operator action. Covers the switching mechanism, transition type, bypass-isolation construction, neutral treatment, the controller and its sensing, time delays, exerciser, load management and communications provisions, ratings including withstand and closing and short-time ratings, service-entrance construction, enclosures, identification, factory and field testing, installation, warranty, and spare parts, for switches serving emergency, legally required standby, optional standby, critical operations, and health care essential electrical system loads.

Individually enclosed motor starters rated 600 V and below that control and protect one motor on its own branch circuit outside a motor control center. Covers combination starters that assemble a disconnecting means, branch-circuit short-circuit and ground-fault protection, a contactor, and an overload relay in one listed enclosure, in full-voltage non-reversing, reversing, two-speed, and reduced-voltage configurations, and manual motor starters that combine a hand-operated contact mechanism with an overload relay. Covers the ratings, the branch-circuit protective device, the contactor, the overload relay, control power, pilot devices and remote interfaces, the enclosure, identification, factory and field testing, installation, warranty, and spares, for indoor and outdoor installations.

Stationary battery systems with chargers providing 24, 48, 125, or 250 VDC control power to switchgear protective relays, breakers, transfer switches, communications, generator starting, emergency lighting inverters, and other critical control loads in substations, generating stations, industrial facilities, and electrical rooms. Covers vented lead-acid (VLA), valve-regulated lead-acid (VRLA), and vented nickel-cadmium (Ni-Cd) chemistries; their chargers; DC distribution; battery monitoring; and the battery room or cabinet. Cross-references the loads they serve (see Low Voltage Switchgear and Medium Voltage Switchgear) and grounding of the DC system (see Grounding And Bonding).

never for new adoptions — this standard has been split and superseded. For dry-type transformers rated 600 V and below use Low Voltage Dry Type Transformers; for transformers with a primary above 600 V (liquid-immersed pad-mounted and MV dry-type) use Medium Voltage Transformers.

The electrical service to a building or structure at 1000 V and below, from the serving utility's point of delivery through the service disconnecting means. Covers coordination with the serving utility and the utility's published service requirements as a project fact, the overhead drop and underground lateral arrangements, the routing of the service-entrance conductors and the NFPA 70 Article 230 rules that apply to them, service masts and weatherheads, meter sockets, current transformer cabinets and the metering enclosures the utility requires, the number, grouping, location, and marking of the service disconnects, the available fault current marking, the surge protective device the service requires, ground-fault protection of equipment at the service, the emergency disconnect, field testing of the service before energization, installation, warranty, and spares, for new services and service upgrades on single-phase and three-phase systems.

System-level standard establishing the classification, source selection, load assignment, transfer scheme, overcurrent coordination, and acceptance testing for a building's emergency and standby power system, in accordance with NFPA 70 Articles 700 (Emergency Systems), 701 (Legally Required Standby), 702 (Optional Standby), and 708 (Critical Operations Power Systems), and NFPA 110 and NFPA 111. Use this standard to define what the system must do as a whole — which loads are emergency vs. standby, what alternate source serves them, how fast they transfer, and how they are commissioned and maintained. Component-level requirements are deferred to the equipment standards for the engine-generator set (see Generators), the automatic transfer switches (see Automatic Transfer Switches), and the stored-energy sources (see Battery Energy Storage Systems).

Individually enclosed disconnecting means rated 1000 V and below, furnished as separate products rather than as part of an assembly: fusible and non-fusible safety switches listed to UL 98 in heavy-duty and general-duty construction, enclosed molded-case circuit breakers and molded-case switches listed to UL 489 and applied as stand-alone disconnects, manual motor controllers listed to UL 508 and marked suitable as motor disconnects, double-throw safety switches and manual transfer switches, and the fuses installed in them, serving feeders, motors, air-conditioning and refrigeration equipment, elevators, electric vehicle supply equipment, and other utilization equipment. Covers the device family and duty class, the overcurrent provision, the voltage, ampere, horsepower, and short-circuit ratings, poles and neutral, fuse class and clips, the operating handle, lockout and door interlock, accessories, the enclosure, identification, factory and field testing, installation, warranty, and spares, for indoor and outdoor locations.

Packaged stationary engine-generator sets rated 1000 V and below, listed to UL 2200, furnished as the alternate source for emergency, legally required standby, optional standby, and critical operations loads, and sets the project applies as a prime or continuous source. Covers the engine and its fuel requirements by fuel type, the alternator and its excitation, the governor and voltage regulator, the set-mounted controller and the remote annunciator, the main line circuit breaker and the neutral bonding at the set, the cooling system, the fuel system on the skid including the sub-base tank, the exhaust silencer and aftertreatment, the enclosure and its sound attenuation, the starting batteries and charger, vibration isolation and seismic certification, factory and field testing, installation, warranty, and spare parts.

Paralleling switchgear rated 1000 V and below that connects two or more engine-generator sets to a common bus, synchronizes each set to the bus, shares the real and reactive load among them, adds and sheds load in priority order, protects each set and the bus, and distributes the paralleled source to the transfer switches or the emergency distribution. Covers the construction basis as a switchboard listed to UL 891 or as metal-enclosed switchgear listed to UL 1558, the generator breaker sections, the master and per-set control sections, the bus tie and distribution sections, the bus and its ratings, the control architecture, synchronizing, load sharing, load add and load shed, the generator protective functions, open-transition, closed-transition, and extended parallel operation with the utility, the control power source, the operator interface and annunciation, communications, the maintenance bypass arrangement, arc-flash mitigation, identification, factory integrated testing with the sets, field acceptance tests, installation, warranty, and spares.

The essential electrical system of a health care facility under NFPA 70 Article 517 and NFPA 99: hospitals, nursing homes, limited care facilities, ambulatory health care occupancies, and any other facility with patient care spaces. Covers the risk categories of the spaces served and the system type that follows from them, the life safety, critical, and equipment branches and the loads assigned to each, the alternate source performance the system requires, the number and arrangement of the transfer switches that serve the branches, the separation and mechanical protection of the branch wiring, the branch circuits and receptacles of patient bed locations and their identification, the second level of ground-fault protection, isolated power systems for wet procedure locations, the coordination requirement specific to the system, the documentation the Authority Having Jurisdiction and the accrediting bodies survey, and the acceptance and periodic testing of the system as a whole.

Dead-front, floor-standing distribution switchboards rated 1000 V and below, listed to UL 891 and built to NEMA PB 2, in which molded-case or insulated-case circuit breakers, fusible switches, or bolted-pressure switches are group-mounted or individually mounted on a common bus, whether installed as service equipment or downstream of a transformer, switchgear, or another switchboard. Covers the ratings, the interrupting rating basis, the main and feeder devices and their trip units, the bus, the structure and enclosure, arc-flash mitigation, the service entrance, surge protection, metering and communications provisions built into the assembly, identification, factory and field testing, installation, warranty, and spares, for three-phase and single-phase AC systems in indoor and outdoor locations.

Metal-enclosed low-voltage power circuit breaker switchgear rated 1000 V and below, listed to UL 1558 and built to IEEE C37.20.1, in which drawout low-voltage power circuit breakers built to IEEE C37.13 are individually mounted in grounded metal compartments on a common bus, whether installed as service equipment, as the secondary of a transformer, or downstream of other distribution equipment. Covers the ratings and the short-time basis, the breakers and their drawout mechanisms, operation, trip units, and accessories, ground-fault protection, arc energy reduction, control power and control wiring, the protective relays, instrument transformers, metering, surge protection, and communications provisions built into the assembly, the bus, the structure and enclosure, compartmentalization and arc-resistant construction, identification, factory and field testing, installation, warranty, spares, and breaker handling equipment, for three-phase and single-phase AC systems in indoor and outdoor locations, including walk-in and non-walk-in outdoor housings.

Dry-type transformers with both windings rated 1000 V and below, listed to UL 1561 and built to IEEE C57.12.01 and NEMA ST 20, single-phase and three-phase, purchased on their own to step a building's distribution voltage down to a utilization voltage or up to a higher one, including the specialty units built on the same construction: K-factor rated, harmonic-mitigating, drive-isolation, and shielded isolation transformers. Covers the ventilated, encapsulated, and cast-coil constructions, efficiency under 10 CFR Part 431, winding material, insulation system and temperature rise, K-factor and harmonic treatment, electrostatic shield, taps, impedance, sound level, enclosure type, terminations and the secondary neutral terminal, accessories, vibration isolation, seismic certification, factory and field tests, mounting and installation, warranty, and spares.

Metal-clad medium-voltage switchgear rated above 1 kV through 38 kV using drawout vacuum or SF6 circuit breakers, built to IEEE C37.20.2 and the ANSI/IEEE C37.04 / C37.06 / C37.09 series, for utility-customer substations, large commercial campuses, healthcare and higher-education central plants, data centers, and industrial facilities. Covers 5 kV, 15 kV, 27 kV, and 38 kV voltage classes, indoor and outdoor walk-in (protected aisle) configurations, arc-resistant ratings per IEEE C37.20.7, multifunction microprocessor protective relays, and optional IEC 61850 station bus communications.

Customer-owned three-phase distribution transformers with a primary winding rated above 600 V through 34.5 kV and a rating of 10 MVA and smaller, stepping a utility or premises medium-voltage supply down to a building's utilization voltage or to a lower medium voltage. Covers liquid-immersed and dry-type units in pad-mounted compartmental and substation-type construction, including ratings, insulation levels, taps, impedance, losses, sound, the insulating liquid and its preservation, dry-type encapsulation and insulation systems, terminations, primary switching and fusing, surge arresters, accessories, factory and field testing, and installation on a pad, in a vault, or in an electrical room.

Metal-enclosed bus built to IEEE C37.23, in nonsegregated-phase, segregated-phase, and self-cooled isolated-phase construction, in the 600 V class and the 5 kV through 38 kV classes, used to connect switchgear to a transformer, a transformer to switchgear, a generator to its switchgear, one switchgear lineup to another, or a drive to its supply, where the current or the voltage puts the connection beyond what cable or UL 857 busway serves. Covers the bus run as one assembly: the type, the voltage class and insulation level, the continuous and short-circuit withstand ratings, the conductors, their plating, insulation, and support insulators, the bolted joints, the enclosure and its material, ventilation, enclosure type, and outdoor provisions, the fittings, the expansion and penetration provisions, the termination flanges and flexible connectors at the equipment, the supports, enclosure grounding continuity, identification, factory and field testing, installation, warranty, and spares, for three-phase AC systems in indoor and outdoor locations.

Separately procured variable frequency drives for three-phase motors rated above 600 V, in the 2.3 kV, 4.16 kV, 6.6 kV, and 13.8 kV classes, driving process pumps, blowers, compressors, fans, and conveyors in water, wastewater, industrial, and power facilities. Covers the drive topology and its input transformer, harmonic performance at the point of common coupling, the output side and its effect on the motor and the cable, cooling, the enclosure, input isolation and fusing, the bypass, motor protection, control power, communications, efficiency, sound, altitude and ambient derating, factory tests, field startup, training, the field acceptance tests this class receives, identification, warranty, and spares.

Stand-alone metal-enclosed interrupter switchgear built to IEEE C37.20.3, rated above 1 kV through 38 kV, in which gang-operated load-interrupter switches, with or without power fuses, are the switching and protective devices, furnished as a medium-voltage service entrance, a primary-selective or loop lineup, a feeder lineup, or the primary switching ahead of separately mounted transformers, indoors or outdoors. Covers the arrangement and the automatic source transfer on a two-source lineup, the ratings, the switches and their mechanisms and operators, the power fuses, the key interlocks and grounding switches, the bus and its insulation, arc-resistant construction, the instrument transformers and the metering section, surge arresters, the cable compartments and the space the lineup provides for terminations, the enclosure, identification, factory and field testing, installation, warranty, and spares.

Factory-assembled, floor-standing low-voltage motor control centers rated 600 V and below, listed to UL 845 and built to NEMA ICS 18, in which combination motor starter units, reduced-voltage starter units, variable frequency drive units, feeder units, control power units, and metering units plug onto a common vertical bus fed from a common horizontal bus. Covers the assembly ratings, the enclosure and structure, the bus, the wiring class and type, arc-flash mitigation, the unit construction and the devices inside each unit, communications, identification, factory and field testing, installation, warranty, and spares, for indoor and outdoor installations.

Factory-coordinated secondary unit substations within the scope of IEEE C37.121, in which a medium-voltage primary section (an incoming air terminal chamber, a load-interrupter switch with or without power fuses, or metal-clad circuit breaker switchgear), a three-phase step-down transformer (liquid-immersed or dry-type), and a secondary section of low-voltage switchgear, switchboard, or motor control center construction are close-coupled into one assembly under one manufacturer of record. Covers what only the assembly decides: the single-ended or double-ended arrangement and the tie transfer scheme, the ratings coordinated across the three sections, the throats and transitions between them, the assembly enclosure, the protective-device actions wired between sections, factory testing of the assembled lineup, field acceptance of the assembly, installation, warranty, and spares. Each section's own construction is invoked by reference to the standard that governs that product.

The service conductors of a building or structure at 1000 V and below, from the service point to the service disconnecting means, complete: the conductor or cable product, its material, its sizing to the calculated load under NFPA 70 Articles 220 and 230, its termination temperature basis, its line-side splices and terminations, and its acceptance tests; and the application rules that apply to feeders over and above the conductor product: feeder sizing to the calculated load under NFPA 70 Articles 215 and 220, feeder protection at the conductor ampacity, parallel conductor sets and their raceway arrangement, the sizing of the feeder neutral for nonlinear load, the feeder voltage-drop criterion, feeder taps and transformer secondary conductors under NFPA 70 240.21, feeders to a separate structure and to a crane runway disconnect, and the acceptance tests a feeder receives beyond those of the conductor product. Applies to commercial, institutional, industrial, and water and wastewater facilities, new services and feeders and the upgrade of existing ones.

Static (solid-state) uninterruptible power supply (UPS) systems that protect critical AC electrical loads — data processing and IT equipment, network and communications gear, life-safety and process controls, medical equipment, and other loads that cannot tolerate a power interruption or a sag — from utility disturbances, sags, surges, and outages. Covers single-phase and three-phase units of small (point-of-use), medium, and large (data center and facility) ratings; topology selection per IEC 62040-3 (double-conversion VFI, line-interactive VI, standby VFD); transformer-free and transformer-based designs; VRLA and lithium-ion battery energy storage with runtime sizing per IEEE 1184; internal static bypass and external maintenance (wraparound) bypass; redundancy from a single module through N+1, parallel, and dual-bus/2N; input harmonics and output performance for nonlinear loads; efficiency and energy-saver/eco modes; monitoring, communications, and emergency power off; seismic anchorage; and the room and code requirements the unit imposes.

The arc-flash study for a project's electrical power distribution system: the incident energy and the arc-flash boundary at every bus a worker examines, adjusts, services, or maintains while it is energized, on AC systems from 208 V through 38 kV with utility, generator, inverter-based, and paralleled sources, and on the DC side of battery, energy storage, and photovoltaic equipment where the project includes it. Covers who performs the study and when it is issued, the IEEE 1584-2018 method and the methods applied outside its range, the buses studied, the source operating cases and the maintenance-mode cases, the arcing current variation, the clearing time taken from the accepted coordination settings, the arc-flash input data the system model does not already carry (electrode configuration, enclosure dimensions, bus gap, working distance), the content of the arc-flash label, the PPE arc rating the facility's safety program consumes, the mitigation recommendations, the report, and the five-year review and the events that call for a re-study.

The field acceptance test program applied to new electrical power distribution equipment after installation and before it is first energized, on systems rated 1000 V and below through 38 kV. Covers who performs the tests and how the firm and its technicians are qualified, the test instruments, the electrical safety basis for the work, the equipment classes and the optional tests within the program, the test plan and the hold points that release energization, the acceptance criteria that every equipment standard's field tests are judged against (insulation resistance, bolted connections, transformer ratio and winding checks, trip unit and relay verification, dielectric tests, instrument transformers), the post-energization infrared survey, deficiency resolution and retesting, and the compiled test report. Each equipment standard names the tests its equipment receives and invokes this standard for the method, the criteria, the tester, and the report.

The time-current coordination study for a project's electrical power distribution system, from the utility's protective device at the point of delivery through every overcurrent protective device within the extent the datasheet selects, on AC systems rated 1000 V and below through 38 kV with utility, generator, inverter-based, and paralleled sources. Covers who performs the study and when it is delivered, the degree of coordination applied to normal distribution and the circuits on which NFPA 70 620.62, 645.27, 700.32, 701.32, 708.54, and 517.31(G) require selective coordination, the coordination time intervals and band separations, the curves of the utility device, transformers, motors, conductors, generators, and inverter-based sources that bound every setting, the coordination of ground-fault protection including the two levels NFPA 70 517.17 requires, the recommended setting of every trip unit, relay, fuse, and overload relay, the trade-off between selectivity and incident energy, the coordination deficiencies and who accepts them, the settings record handed to the field, the report, and the events that call for a re-study.

The short-circuit study for a project's electrical power distribution system, from the utility point of delivery through every point at which an interrupting rating, a close-and-latch rating, a short-time withstand rating, a bus bracing rating, or a marked short-circuit current rating is confirmed, on AC systems rated 1000 V and below through 38 kV with utility, generator, inverter-based, and paralleled sources. Covers who performs the study and when it is delivered, the calculation method and the duty networks, the fault types and the maximum and minimum cases, the system model and the data it is built from (the utility's available fault current and X/R, transformer impedances, conductor impedances and lengths, motor and generator contribution, inverter-based sources, and the survey of existing equipment on a renovation), the source operating cases, the equipment duty evaluation, the treatment of series-rated combinations, the available fault current and date that NFPA 70 110.24 requires at the service equipment, the report and the model handed to the coordination and arc-flash studies, and the events that call for a re-study.

The illumination of the means of egress under normal power, the emergency illumination that replaces it when normal power fails, exit signs, and luminous egress path markings, in new construction and renovation of commercial, institutional, assembly, industrial, and multi-occupancy buildings. Covers the code-required illumination levels and duration, the photometric demonstration of compliance, the choice of emergency power source strategy for egress illumination, self-contained unit equipment, emergency battery packs in architectural luminaires as they serve the egress design, central inverter systems, generator-backed emergency lighting circuits and their battery bridging, exit sign type, power source, legend, and construction, photoluminescent and self-luminous signs, luminous egress path marking, periodic testing and monitoring provisions, the wiring independence NFPA 70 Article 700 requires, acceptance testing, warranty, and spares.

Exterior and site lighting for commercial, institutional, industrial, and campus projects, including area and roadway luminaires, parking-lot and parking-structure luminaires, floodlights, wall-pack luminaires, bollards, and their supporting poles, foundations, and lighting controls. Covers luminaire photometric performance, light-pollution and dark-sky control, LED drivers and electrical requirements, pole and support structures, foundations and anchorage, photocontrol and scheduling controls, surge protection, and corrosion-resistant finishes for outdoor service.

Permanently installed interior luminaires for commercial, institutional, industrial, multifamily, and mixed-use buildings: recessed troffers and panels, downlights, recessed and surface linear luminaires, pendants, wall-mounted and cove luminaires, high-bay and low-bay luminaires, vapor-tight and washdown luminaires, and the luminaires in refrigerated and unconditioned interior spaces. Covers the LED light source, chromaticity and its tolerance, color rendition, efficacy, lumen maintenance and rated life, photometric measurement, glare control and optics, the LED driver and its input voltage, power quality and surge immunity, the dimming input and its response to the control signal, the lowest dimming level, the dimming curve, color tuning, flicker, the integral emergency battery driver as a component of the luminaire, housings, insulation-contact and air-tight recessed housings, location listings, mounting, support, the seismic attachment of recessed and pendant luminaires in suspended ceilings, the luminaire schedule as the record of each type, field testing, warranty, and spares.

The interior lighting control system of a commercial, institutional, or industrial building: the occupancy and vacancy sensors, daylight sensors, time schedules, manual control stations, relay panels, lighting contactors, lighting-control panelboards, room controllers, networked and luminaire-level control systems, and the management software that together decide when each luminaire is on, off, or at an intermediate level. Covers the control architecture and its network, the control signal and protocol delivered to the luminaire driver and the minimum light level the system commands, occupancy and vacancy sensing, daylight-responsive control, time scheduling and override, manual control, branch-circuit switching equipment, automatic receptacle control, demand-responsive control, the interfaces to the building automation system, motorized shades, and other building systems, the UL 924 override device that returns a controlled egress luminaire to full output, the low-voltage control wiring, the documented sequences of operation, startup, programming, functional testing, training, warranty, and spares.

Plant-cast precast concrete units whose exposed face is a specified architectural finish, installed as cladding on the exterior walls of commercial, institutional, healthcare, educational, civic, and multifamily buildings: spandrel panels, full-story wall panels, column covers, cornices, copings, sills, window surrounds, reveal panels, soffit panels, and custom profiled trim, in solid, face-mix-over-backup, and insulated sandwich configurations, with as-cast, form-liner, sandblasted, acid-etched, retarder-exposed-aggregate, bushhammered, honed, polished, thin-brick-faced, and stone-faced finishes. Covers the delegated design of the units and their connections, the face mix and its color, the finish and its acceptance by sample and mockup, reinforcement and connection hardware corrosion protection, the insulation of sandwich panels, joint width, PCI MNL-117 and MNL-135 tolerances, plant certification and quality control, erection, field repair, and cleaning.

Structural cast-in-place concrete for buildings and structures — constituent materials, mixture proportioning and qualification, exposure-class durability requirements, ready-mixed production and delivery, placement and consolidation, hot- and cold-weather concreting, field testing, and evaluation and acceptance of the hardened concrete. Applies to footings, foundations, grade beams, mat foundations, below-grade walls, slabs on grade, elevated slabs and decks, columns, beams, and structural walls on commercial, institutional, and industrial projects.

ancillary materials and pre-installed hardware set in place before or during cast-in-place concrete placement to serve structural, waterproofing, moisture-control, or attachment functions - PVC, rubber, and hydrophilic waterstops; under-slab vapor retarder placement; wire, plastic, and precast bar supports (chairs); dovetail anchor slots for masonry veneer; embedded plates, angles, and weld plates; cast-in anchor rods and headed studs; and expansion-joint filler. Applies to all cast-in-place structures including buildings, industrial facilities, water and wastewater plants, below-grade walls, slabs-on-grade, and elevated decks.

Design and construction of joints in cast-in-place concrete that must control water infiltration, accommodate movement, or both - construction (cold) joints, contraction/control joints, expansion/isolation joints, and seismic joints. Covers the whole joint system: layout and spacing logic, waterstop type selection and performance criteria (PVC, rubber/EPDM, hydrophilic, external), preformed filler, splice and transition detailing, and inspection. Primary applications are water-retaining and water-excluding below-grade structures (tanks, reservoirs, wet wells, vaults, tunnels), water- and wastewater-treatment basins and channels, and below-grade building walls and slabs where groundwater exclusion is required; also structural construction joints in above-grade walls and elevated slabs.

curing methods, materials, and duration plus surface finishing for cast-in-place concrete placements - structural slabs, elevated decks, walls, columns, footings, grade beams, and site flatwork. Covers wet cure, sheet cure, membrane-forming curing compounds (ASTM C309, C1315), temperature-protection blankets, formed-surface curing, the finishing-to-curing transition, the full range of surface finishes (screed, broom, float, steel-trowel, exposed aggregate, rock salt, swirl, formed), FF/FL flatness and levelness tolerances per ACI 117, and surface-defect acceptance and remediation.

Cast-in-place concrete equipment pads and housekeeping pads that receive mechanical, electrical, and plumbing equipment - generators, pad-mounted and dry-type transformers, switchgear and switchboard lineups, chillers, air handlers, condensing units, pumps, compressors, boilers, and similar equipment - whether the pad bears on grade, on an interior finished floor, on a structural slab, or on an exterior platform. Covers the decisions a pad standard actually owns: pad geometry and height, attachment to the supporting concrete, reinforcement method, cast-in and post-installed equipment anchorage, cast-in raceway and grounding provisions, liquid containment, surface finish and grout bed, isolation from adjacent construction, dimensional and anchorage tolerances, and the verification performed before concrete is placed and before equipment is set.

Temporary cast-in-place concrete formwork systems and accessories on commercial, institutional, industrial, and infrastructure projects — wall, column, beam, slab-soffit, foundation, and architectural concrete forms; form ties and hardware; chamfer, rustication, and form liners; release agents; void forms; and shoring/reshoring for multistory construction, including formwork loads, lateral pressure, deflection control, tolerances, and stripping sequence.

Steel reinforcement for cast-in-place structural concrete: deformed and plain reinforcing bars, welded wire reinforcement, headed deformed bars, and the lap, mechanical, end-bearing, and welded splices that join them. Covers the bar standard and grade for each reinforcement class, the bars the seismic-force-resisting system requires, corrosion-protected reinforcement and the system that provides it, fabrication and bending, placement, spacing, and concrete cover, the splice policy for each splice type, welding of reinforcement under AWS D1.4, placement tolerances, the pre-placement inspection, special inspection of reinforcement, and the delivery, storage, and handling of coated and uncoated steel.

assessment, surface preparation, material selection, and application of repair systems for existing hardened concrete — crack repair (epoxy and polyurethane injection, routing and sealing), partial- and full-depth patching, bonded overlays, corrosion mitigation of embedded reinforcement, protective surface treatments, and FRP strengthening as part of a repair scope. Applies to buildings, parking and water/wastewater structures, and industrial floors across interior, exterior, submerged, freeze-thaw, chemical, and chloride/carbonation exposures, on renovation, historic rehabilitation, and repair-of-new work.

Deep foundations for buildings, structures, and infrastructure where shallow foundations are inadequate — poor bearing soils, high concentrated loads, expansive or collapsible soils, scour-susceptible sites, or where differential settlement must be controlled. Covers driven piles (steel H-piles, steel pipe piles, precast prestressed concrete piles, timber piles), cast-in-place drilled shafts and piers (straight-shaft and belled/underreamed), continuous flight auger (CFA/auger-cast) piles, micropiles, and helical piles, including materials, installation equipment and methods, field monitoring, load and integrity testing, and acceptance criteria.

adhesive and cementitious grouts that develop structural bond for post-installed rebar dowels, anchor bolts, threaded rod, and headed studs drilled into hardened concrete, masonry, or rock; and precision epoxy or non-shrink grout placed under equipment baseplates, machinery sole plates, and column base plates where full contact and load transfer are required. Covers interior, exterior, submerged, chemical-exposure, and high-temperature service when the correct product is selected.

Installation, material selection, and acceptance of grouted column base plates and bearing plates on concrete foundations, piers, and pedestals, where a cementitious or epoxy non-shrink grout layer fills the void between a leveled steel plate and the concrete substrate. Covers structural steel column bases, equipment bearing plates, and beam bearing plates on commercial, industrial, and institutional buildings, including leveling, formwork, grout selection and placement, curing, anchor rod torquing, and field verification.

Load-bearing non-shrink grout (hydraulic cement-based or epoxy) placed under structural steel base plates, column and bearing plates, machinery and equipment foundations, precast concrete bearing pads, crane rail sole plates, bridge bearing assemblies, and anchor bolt leveling pockets, wherever dimensional stability under sustained compressive load is required across commercial, industrial, institutional, and infrastructure work.

attaching structural and non-structural elements to existing hardened concrete or masonry (CMU, brick) substrates with anchors set in a drilled hole - torque-controlled and displacement-controlled expansion anchors, undercut anchors, concrete screw anchors, and adhesive (chemical) anchors using threaded rod or reinforcing-bar inserts. Covers cracked-concrete-qualified and seismic-qualified systems, sustained-tension and overhead adhesive installations, anchorage in dry or saturated substrates, hole preparation, torque verification, and mandatory special inspection.

Cast-in-place post-tensioned (PT) concrete for buildings and parking structures, where prestressing steel is tensioned after the concrete has cured and the force is anchored against the hardened member. Covers both dominant systems: unbonded single-strand tendons (greased-and-sheathed seven-wire strand, the standard system for elevated building floors and parking decks) and bonded multistrand tendons (strand bundled in ducts that are grouted after stressing, used for transfer girders, longer spans, and heavier post-tensioned beams). Addresses prestressing strand, anchorages and couplers and their qualification, sheathing and corrosion protection including encapsulated and electrically-isolated tendons for parking and aggressive exposure, tendon profile and placing tolerances, concrete strength at stressing, stressing operations and sequence, elongation measurement and acceptance, wedge seating, tendon cutting and pocket treatment, grouting of bonded tendons, and field quality control and records. Applicable to commercial, institutional, residential, and parking buildings.

Plant-fabricated precast and prestressed (pretensioned) concrete for buildings, including structural precast — columns, beams, spandrels, double-tees, hollow-core plank, solid and insulated wall panels, stair and landing units — and architectural precast cladding panels with specified exposed finishes. Covers concrete and release-strength requirements, pretensioned and conventionally reinforced production, connection hardware and embedded plates, architectural finishes (form liner, exposed aggregate, acid-etch, sandblast), PCI plant certification and quality control, product and erection tolerances, bearing pads, grouting, joint sealant coordination, erection, and patching. Applicable to commercial, institutional, industrial, parking, and multi-family buildings.

Buildings, structures, and site improvements that bear directly on competent soil or rock within a few feet of finish grade. Covers the execution and quality assurance of spread (isolated column) footings, continuous wall (strip) footings, combined footings, and strap (cantilever) footings — forming, bearing-surface preparation, reinforcement and dowel layout, anchor-bolt and embedded-plate setting, keyways and construction joints, lean-concrete sub-bases, and bearing-inspection hold points. Applies to commercial, institutional, industrial, and multi-family residential work.

pneumatic placement of hydraulic-cement concrete by wet-mix or dry-mix process for structural and non-structural work — shoring and soil-nail/tieback walls, slope and rock stabilization, tunnel and underground linings, void fill and member encasement, pools and water features, and form-free placement of complex geometries. Covers mix design, materials, equipment, nozzleman qualification, preconstruction test panels, placement, curing, and acceptance testing for original construction.

Concrete slabs on ground that serve as building floors on commercial, institutional, industrial, warehouse, and pre-engineered metal building projects, bearing directly on a prepared subgrade or on a granular subbase rather than on a structural frame. Covers the decisions that make a floor slab a designed element rather than a poured surface: the design basis the Engineer of Record records (subgrade modulus, design loads, thickness), the granular subbase and its surface, the condition of the supporting surface when concrete is placed, whether a vapor retarder is provided beneath the slab and the sequence it fixes, the crack-control strategy (plain, welded wire reinforcement, deformed bars, steel or synthetic macrofibers, shrinkage-compensating concrete, or post-tensioning) and the form, position, and support of reinforcement within the slab, thickened edges that act as integral grade beams, contraction, isolation, and construction joint layout, load transfer across joints, joint filling, floor flatness and levelness by F-numbers, the pre-placement verification, and acceptance of the finished floor.

site-cast tilt-up wall panels for low-rise and mid-rise buildings, where concrete panels are cast horizontally on the slab or a casting bed, tilted into position, and braced until the structural frame is complete. Covers warehouse, distribution, manufacturing, big-box retail, and self-storage buildings, including solid, ribbed, and insulated sandwich panels, bond breaker, lifting and bracing hardware, connections, finishes, and tie-in to the structural diaphragm.

Vapor barriers and vapor retarders installed in direct contact with soil or granular fill beneath concrete slabs-on-grade in commercial, institutional, and residential construction. Covers material selection, ASTM E1745 performance-class determination, true vapor barriers (less than or equal to 0.01 perms) for high-sensitivity occupancies, placement sequence, lap and seam requirements, penetration sealing, repair, and coordination with concrete placement.

The cast-in-place concrete of structures that hold or exclude water, wastewater, sludge, or process liquid by the concrete itself and its joints, designed under ACI 350: treatment basins, clarifier and aeration tanks, filters, clearwells, contact tanks, wet wells, channels, digesters, equalization and holding tanks, chemical containment, and the below-grade galleries and vaults a plant designs to stay dry under groundwater. A layer read with Cast In Place Concrete, Concrete Reinforcement, Concrete Formwork, Concrete Curing And Finishing, and Concrete Joints And Waterstops, and with Common Work Results Process on a process project: it adds only what ACI 350 adds, the exposure and durability limits for liquid-retaining concrete, the reinforcement and cover that control cracking at liquid faces, the placement sequence of base slabs and walls, the casting and grouting of embedded wall pipes and gate thimbles, form ties in liquid-retaining walls, the hydrostatic tightness test of the completed structure under ACI 350.1, leak repair and retest, and backfill after the test.

cast-in-place anchor rods, headed anchor bolts, and embedded steel items (bearing plates, embed plates, pipe sleeves, weld studs, and miscellaneous cast-in anchors) set into concrete foundations, grade beams, piers, or walls before or during concrete placement to positively anchor structural steel columns, equipment bases, canopy and sign posts, utility poles, and similar elements on commercial, industrial, institutional, and heavy civil projects. Covers ASTM grade selection, fabrication, protective coatings, setting templates, pipe sleeves, leveling-nut assemblies, and field inspection of cast-in items.

Structural cold-formed steel framing designed under AISI S100 and AISI S240 and, where the framing participates in a seismic force-resisting system, AISI S400. Covers load-bearing stud walls, exterior non-load-bearing wind-bearing wall framing in both infill and bypass arrangements, cold-formed steel floor joists, roof rafters, and trusses, cold-formed steel shear walls and braced walls, and the parapet, canopy, and soffit framing that carries calculated load. Addresses the division of design responsibility between the Engineer of Record and the specialty engineer, sheet steel and metallic coating selection, member designation and identification, out-of-plane deflection criteria, movement accommodation at the head of wall, bridging and bracing, screwed, welded, powder-actuated, clinched, and bolted connections, opening and built-up member framing, web penetrations and field modification, erection tolerances, listed fire-resistance-rated assemblies, and field inspection.

On every project that includes hot-rolled structural steel work — commercial, institutional, industrial, mixed-use high-rise, and infrastructure — to establish the unified administrative and quality-assurance envelope for hot-rolled structural steel sections: fabricator and erector qualification (AISC certification, IAS AC172 accreditation), the common submittal hierarchy (shop and erection drawings, MTRs and CMTRs, WPS/PQR, welder qualifications, delegated-design connection calculations, product data), delivery and storage of steel, fabricator/erector/contractor coordination, pre-erection survey and base-plate grouting responsibility, special-inspection administration under IBC Chapter 17, and the non-conforming work and corrective-action process spanning all structural steel sections.

Pre-engineered (factory-fabricated) metal building systems (PEMBs/MBS) for single-story and low-rise non-residential construction procured as an integrated, delegated-design package from one manufacturer - primary rigid frames (clear-span, multi-span, lean-to, modular), secondary framing (purlins, girts, eave struts), manufacturer-supplied wall and roof panels, skylights, ventilators, insulation, integrated crane runway and mezzanine framing, and all connection hardware. Typical applications include warehouses, distribution centers, light manufacturing, aviation hangars, self-storage, and agricultural facilities.

architecturally exposed, custom shop-fabricated steel, stainless, and aluminum elements that complete the building envelope and interior fit-out but are not primary framing or standard stair/railing assemblies. Covers custom canopy and sunshade (brise-soleil) frames and blades, architectural screens and grille panels, custom access hatches and pit/trench covers with architectural frames, pipe sleeves and escutcheons, equipment enclosures and housings with specified finishes, corner guards with architectural finishes, coping and cap-angle assemblies, planter and site-furniture frames, and custom steel trim. Use where the metal is exposed to view and the architect specifies finish, profile, tolerance, and assembly.

Open-grid bar grating of carbon steel, stainless steel, and aluminum in welded, pressure-locked, swaged, and riveted construction, molded and pultruded fiberglass-reinforced plastic grating, and solid raised-pattern floor plate of steel, stainless steel, and aluminum, furnished as the walking surface of equipment platforms, mezzanines, catwalks, pipe-rack and tank-top access ways, and as removable covers over trenches, pits, sumps, and equipment wells in commercial, institutional, industrial, water and wastewater, power, and process facilities. Covers the design loads and the deflection limit the panels are sized to, the derivation of bearing bar depth, thickness, and spacing from the NAAMM load tables, the opening-size limit on accessible routes and in the means of egress, bar surface, banding, FRP construction, resin, surface, and fire performance, floor plate pattern, thickness, and slip-resistant treatment, finishes, fastening, removable panels and their handling weight, trench and pit covers, installation, field verification, delivery, warranty, and spare clips.

Shop-fabricated metal stairs and railing systems for commercial, institutional, and industrial buildings — egress and convenience stairs built as steel pan stairs with concrete fill, steel plate (formed plate) stairs, and bar-grating-tread stairs, including their stringers, treads, risers, landings, and supporting framing, together with the handrails and guards (guardrails) of steel, aluminum, or stainless pipe, tube, and picket. Covers structural design for the IBC stair uniform live load and concentrated load, deflection and vibration serviceability, tread and riser dimensions and slip-resistant nosings to the IBC means-of-egress provisions, the IBC structural loads on handrails and guards (concentrated, uniform, and infill), shop and field welding to AWS D1.1, bolted and anchored connections, hot-dip galvanizing and shop priming, and field finishing.

Utility steel items shop-fabricated for a building or plant that are not part of the primary frame on the structural drawings and carry no architectural finish requirement: fixed vertical ladders with their ladder safety systems or personal fall arrest anchorage, ship's ladders and alternating tread devices, loose steel lintels and masonry shelf angles shown outside the structural drawings, slab and curb edge angles and nosings, loose embedded steel furnished for casting into concrete by others (embed plates, weld plates, seat angles, and anchor channels serving the items of this standard and architectural metal fabrications), the angle frames of utility trench and pit covers, loose equipment supports, stands, and rooftop dunnage not furnished with the equipment, and unrated steel pipe guard posts and column and door-jamb guards that protect building elements and equipment from impact. Covers the material grade for each product form, fasteners and anchors, the shop corrosion protection policy for interior and for exterior and masonry-embedded items, the OSHA and ANSI/ASSP A14.3 fall protection decision for fixed ladders, ship's ladder geometry, lintel bearing and shelf angle segmentation, embed anchorage, trench frame material and section, dunnage clearance and design responsibility, guard post size, fill, cap, and anchorage, exposed weld treatment, installation, delivery, and warranty, in commercial, institutional, industrial, water and wastewater, and multi-family buildings.

Specifying, procuring, and installing electrically operated overhead material handling equipment in industrial, process, and manufacturing facilities — top-running single- and double-girder bridge cranes, underhung/under-running bridge cranes, monorail systems, and electric chain and wire-rope hoists. Covers duty classification, hoist type and lift height, runway electrification, bridge/trolley drives, pendant and radio controls, seismic and wind restraint inputs, and both new installations and upgrades to existing runway systems for water/wastewater plants, manufacturing facilities, power plants, pump stations, and maintenance bays.

Permanent and semi-permanent fall protection anchorage installed on low-slope and sloped roofs, parapets, and building facades to protect workers during maintenance, window washing, roofing, and facade access. Covers welded or bolted structural anchor plates, parapet clamps, non-penetrating standing-seam clamps and counterweight systems, concrete and masonry embedded anchors, davit base sockets, horizontal lifeline (HLL) cable and rail anchorage, and engineered certification of anchors for personal fall arrest and travel restraint systems on new construction and retrofit.

Shop-applied corrosion protection for structural steel and miscellaneous metals fabricated off-site, including shop prime painting (zinc-rich, alkyd, epoxy, or urethane primers), hot-dip galvanizing of fabricated assemblies (ASTM A123) and hardware (ASTM A153), duplex galvanize-plus-paint systems, and repair of damaged galvanized coatings (ASTM A780), for building frames, joists, stairs, railings, lintels, embeds, and ornamental ironwork across commercial, institutional, industrial, and infrastructure projects.

Cold-formed steel floor and roof deck furnished and installed under the Steel Deck Institute standards: composite floor deck acting with the concrete slab above it, non-composite form deck serving as a permanent form, roof deck carrying the roofing assembly, and acoustical roof deck. Covers the division of design responsibility for the deck and its diaphragm, manufacturer and installer qualification, sheet steel and metallic coating selection, the basis for profile, depth, gauge, and section properties, diaphragm design basis, attachment to supports by arc spot welds, arc seam welds, powder-actuated fasteners, and screws, side-lap fastening, the deck's role in a composite slab including shoring, concrete placement loads, and the sequence for shear studs welded through the deck, roof deck uplift attachment and FM Approval, openings and their reinforcement, pour stops, closures, and sump pans, placement and OSHA decking requirements, field cutting and coating repair, field inspection under the SDI quality standard, delivery and storage, and the warranty for the deck work.

Open-web steel joists and joist girders furnished by Steel Joist Institute member manufacturers under ANSI/SJI 100 and erected under ANSI/SJI 200. Covers K-series and KCS joists, LH-series and DLH-series long-span joists, G-series joist girders, and CJ-series composite joists. Addresses the delegated-design relationship between the Engineer of Record and the joist manufacturer, joist and erector qualification, chord and web steel selection, deflection and floor-vibration criteria, camber policy, bearing seat depth and end anchorage, bridging type and attachment, headers at framed openings, chord extensions, erection stability and erection bridging under OSHA 29 CFR 1926 Subpart R, erection tolerances, shop coating selection, field touch-up, and field inspection of joist work.

The bolted and welded connections that join hot-rolled structural steel framing members into a load-carrying structure: simple shear connections, fully restrained and partially restrained moment connections, vertical and horizontal bracing connections and their gusset plates, column splices, and the steel side of column base plate connections. Covers the assignment of connection design responsibility under AISC 303, the joint condition (snug-tight, pretensioned, or slip-critical) for each connection class, high-strength bolt assemblies under ASTM F3125 and their finish, the RCSC pretensioning methods and pre-installation verification, faying surface slip class and treatment, bolt hole types, the backing, weld tab, and access hole configurations at connection groove welds, load sharing between bolts and welds, the connection provisions AISC 341 imposes on the seismic force-resisting system, bolting inspection, and the handling of fastener assemblies.

The hot-rolled structural steel frame of a building or structure designed by the Engineer of Record under ANSI/AISC 360: wide-flange beams, girders, and columns, hollow structural sections and pipe used as columns, braces, and beams, channels, angles, tees, plates, and bars, built-up members, crane runway beams, and the headed shear stud connectors, stiffeners, column base plates, and stabilizer plates furnished with them. Covers the material grade for each shape family, the material provisions the seismic force-resisting system imposes on members, fabricator and erector qualification, shop and erection drawings, cutting, hole forming, straightening, cambering, and member marking, architecturally exposed structural steel categories, the shop coating system and its boundary with applied fireproofing and field finishes, erection planning, temporary bracing, column base setting, erection tolerances and the post-erection survey, field touch-up, delivery and storage, and the warranty for the structural steel.

The project-wide welding quality program for all shop and field welding of structural carbon and low-alloy steel in building construction — base-metal and filler-metal qualification, process selection (SMAW, FCAW, GMAW, SAW, GTAW), prequalified and qualified WPS, welder and operator qualification, preheat and interpass control, joint preparation and fit-up, weld size and type selection, weld quality acceptance, and the full nondestructive examination (visual, MT, PT, UT, RT) program, including seismic demand-critical welds and protected zones per AWS D1.8 in SDC C through F. Issue as this general welding standard that the fabrication sections call up by reference.

specifying, selecting, and installing clay and shale brick masonry for structural and architectural applications in commercial, institutional, and residential construction. Covers solid facing brick, building brick, hollow brick, and thin brick veneer units across single-wythe veneer, cavity wall, multi-wythe solid, and reinforced assemblies, with associated accessory materials (ties, joint reinforcement, flashing, weeps, expansion-joint sealant). Applies to new exterior and interior brick veneer cladding, structural brick walls, and feature walls under both empirical and engineered (TMS 402) design.

supply and installation of architectural cast stone trim units (manufactured concrete simulating quarried stone) such as sills, copings, lintels, banding, water tables, quoins, keystones, door and window surrounds, base courses, and column caps and bases, on new and renovated commercial, institutional, and residential buildings. Covers wet-cast and vibratory dry-tamp production, mix design, physical performance, reinforcement, color and texture, anchorage, mortar and setting, and field handling.

the shared materials, installation requirements, and quality provisions that apply across all unit masonry and masonry veneer on a project — mortar and grout materials and placement, accessories (ties, anchors, flashing, weep holes, joint reinforcement, joint fillers), embedded items, workmanship, construction tolerances, cold- and hot-weather protection, cleaning, and field quality control including special inspections. This parent umbrella flows down to all subordinate masonry sections and need not be repeated there. Applies to commercial, institutional, industrial, and residential unit masonry and masonry veneer work.

procurement and pre-installation verification of hollow and solid concrete masonry units (CMU) delivered to a project site — loadbearing units to ASTM C90, non-loadbearing partition units to ASTM C129, and concrete brick to ASTM C55 — covering weight class, cell geometry, face-shell and web dimensions, specialty shapes, exposed finishes, dimensional tolerances, strength, absorption, shrinkage, and plant/delivery sampling for commercial, institutional, industrial, and multi-unit residential masonry.

anchored masonry veneer systems (brick, CMU, and natural or manufactured stone) over structural backup substrates such as cold-formed steel stud framing, CMU, cast-in-place concrete, or wood framing on commercial, institutional, and multi-family buildings. Covers the full anchorage assembly: adjustable two-piece veneer anchors, corrugated and wire ties, joint-reinforcement anchors, shelf and base support angles, air-space and cavity geometry, base and shelf-angle flashing, weep systems, and corrosion protection by exposure zone. Applies to new construction and veneer replacement on Type I-V construction in all seismic and wind exposure categories.

Selection, specification, mixing, and placement of mortar and grout for new masonry and for repair/repointing on commercial, institutional, and residential projects. Covers portland cement-lime, masonry cement, mortar cement, and pre-blended mortars per ASTM C270, and fine, coarse, and self-consolidating grouts per ASTM C476, including proportion and property methods, weather requirements, mockups, joint tooling, grout lifts and consolidation, and field QC.

The assembled unit masonry wall. Load-bearing walls, shear walls, non-load-bearing partitions, composite and multi-wythe walls, the masonry backup wythe of a cavity wall, and pilasters and piers, built from concrete masonry units alone or from concrete masonry units combined with clay brick. Covers the assembly design values (specified masonry compressive strength, the unit and grout strengths that follow from it, and the mortar type for each wall class), grouting extent and the cells that receive it, bar reinforcement and joint reinforcement, corrosion protection of embedded metal, wythe ties and intersecting-wall connections, bond beams and lintels, bond pattern, bedding, and joint profile, control and expansion joints in the assembly, the prescriptive seismic detailing the seismic design category invokes, bracing of walls under construction, tolerances tightened for exposed work, and the strength verification and special inspection program.

Specification, selection, installation, and commissioning of active (ACB) and passive (PCB) chilled beam terminal units for sensible cooling and supplemental heating in commercial and institutional buildings (offices, higher education, non-critical healthcare, hotels, laboratories) served by chilled water and a dedicated outdoor air system; covers ceiling-recessed, ceiling-exposed, and multi-service configurations, condensation protection, and controls integration.

Central station air handling units that condition air and deliver it through a field-installed duct distribution system, whether factory-assembled in shipping sections or field-erected from components. Covers indoor and outdoor units, constant-volume and variable-air-volume systems, single-zone and multiple-zone arrangements, mixed-air units and dedicated outdoor air units, and units serving commercial, institutional, industrial, healthcare, and laboratory occupancies.

Factory-fabricated air terminal units that meter primary air from a central air system into an individual thermal zone in commercial, institutional, healthcare, and industrial buildings. Covers single-duct, dual-duct, and bypass metering arrangements; variable-volume and constant-volume airflow control; pressure-independent and pressure-dependent control basis; parallel and series fan sections; hot water, steam, and electric reheat with their valves, actuators, and safety devices; casing construction and acoustic treatment; primary damper and actuator; primary airflow sensing; radiated and discharge sound; the zone controller, zone sensor, and building automation interface; factory testing; installation; and field airflow, functional, and acoustic verification.

Factory-assembled precision cooling units that hold the temperature and humidity of a data center, server room, network room, telecommunications room, or other space whose load is electronic equipment running year-round. Covers direct-expansion units rejecting heat to a remote air-cooled condenser, a water-cooled condenser, or a glycol drycooler, chilled water units served by a central plant, and dual-source units, in downflow, upflow, horizontal, in-row, and ceiling-mounted arrangements; the fans, compressors, coils, control valve, humidifier, dehumidification and reheat, filters, drain pan, and economizer section of the unit; the remote condenser or drycooler and pump package furnished with it; the unit controller, its sensing point, unit-to-unit teamwork, and its interface to the monitoring system; leak detection under and around the unit; rating under AHRI 1360 by the ASHRAE 127 method; factory testing, installation, startup, commissioning, warranty, and spare parts.

Factory-assembled dedicated outdoor air units that condition 100% outdoor air to a controlled leaving air dew point and supply air temperature, independent of the sensible heating and cooling of the spaces they ventilate. Covers packaged outdoor and indoor units with direct-expansion, heat pump, or chilled water cooling; hot gas, wraparound, hydronic, and electric reheat; heat pump, gas-fired, electric, hydronic, and recovery-only heating; the air-to-air energy recovery section and its exhaust side; supply and exhaust fans; filtration; casing, drain pans, and curbs; the refrigerant, its safety group, and the detection provisions that go with mildly flammable refrigerants; the supply air temperature and dew point control strategy and the unit's interface to the building automation system and to the parallel sensible system; and the setting, connection, startup, and commissioning of the installed unit. Applies to units serving variable refrigerant flow, fan coil, water-source heat pump, chilled beam, and radiant systems, to units supplying laboratory make-up air, and to units delivering ventilation air directly to occupied spaces.

Fixed industrial and laboratory-process dust collection and fume exhaust systems that capture airborne particulates, mists, vapors, or process fumes at the point of generation and convey them to air-cleaning equipment before discharge — manufacturing plants, fabrication and welding shops, metal-grinding areas, woodworking plants, and chemical and food-processing spaces. Covers capture hoods, conveying ductwork and air-moving fans, primary air-material separators (baghouses, cartridge collectors, cyclones, wet scrubbers, electrostatic precipitators), explosion-isolation and fire components in the exhaust stream, and system controls and monitoring, for both new systems and modifications to existing ones, including combustible and non-combustible streams.

Air-to-air energy recovery devices that transfer heat, and optionally moisture, between a building's outdoor (intake) air stream and its exhaust (relief) air stream to reduce the conditioning load imposed by code-required ventilation. Covers packaged rooftop, wall, and ceiling energy recovery ventilators (ERVs and heat recovery ventilators) with integral fans and controls; core-only energy recovery components installed in custom or field-built air handlers and dedicated outdoor air systems (rotary enthalpy and sensible wheels, fixed-plate sensible aluminum cross-flow cores, fixed-plate membrane enthalpy cores, heat-pipe assemblies, and runaround glycol coil loops); the recovery effectiveness, cross-leakage, and frost-control behavior that govern selection; the supply and exhaust fans where integral; filtration; casing; condensate management; and the controls integration including economizer bypass and demand-controlled modulation. Applicable to commercial, institutional, multifamily, and light-industrial buildings where exhaust-air energy recovery is mandated by the energy code or used to reduce ventilation load.

Factory-assembled evaporative air coolers — direct, indirect, and two-stage (indirect/direct) — serving as primary or supplemental cooling in dry climates (outdoor design wet-bulb at or below 68°F / 20°C) for commercial, institutional, light-industrial, warehouse, and agricultural facilities. Covers rooftop, ground, and wall-mounted packaged units, central-station evaporative modules, and integral evaporative pre-cooling sections, including capacity, casing and media materials, water distribution, bleed-off and water management, controls integration, efficiency, and field commissioning, for new construction and retrofit where refrigerant cooling is absent or used only as backup.

Factory-fabricated hydronic fan-coil units and blower coil units that recirculate room air across a chilled water coil, a heating water coil, or both to condition a single thermal zone from a central water plant. Covers 2-pipe and 4-pipe units with or without supplementary electric heat; horizontal and vertical arrangements; exposed cabinet, concealed, and recessed enclosures; floor, ceiling, and stacked high-rise riser types with their integral risers; the fan, motor, and speed control; filters; the drain pan and the condensate connection; the coil connection package and the control package as furnish decisions; AHRI 440 ratings and AHRI 350 and AHRI 260 sound ratings; installation, startup, warranty, and spare parts.

Specifying, selecting, installing, and acceptance-testing life-safety dampers at duct penetrations through fire-rated walls, floors, and partitions in commercial, institutional, and industrial buildings. Covers curtain-type and multi-blade fire dampers, smoke dampers, combination fire/smoke dampers, and corridor dampers; UL-listed static and dynamic assemblies; leakage class requirements; sleeve, access-door, and breakaway-connection details; and the initial and periodic inspection/testing regime under NFPA 80 and NFPA 105.

Fixed gas detection equipment in buildings where code or safety mandates continuous or demand-based atmospheric monitoring — enclosed and semi-enclosed parking garages (CO and NO2 for occupant safety and ventilation demand control), refrigerant machinery rooms (refrigerant-concentration detection triggering emergency ventilation and alarms per ASHRAE 15), commercial kitchen and food-service mechanical rooms, and other occupied or semi-occupied mechanical spaces where NFPA 72, IBC, or the AHJ mandates system-type detectors. Covers single- and multi-gas transmitter/sensor heads, control panels and relay modules, audible/visual annunciators, and interlock wiring to ventilation or exhaust systems.

gas-fired high-intensity luminous (ceramic/box/spot) and low-intensity radiant tube heaters used as primary or supplemental heating in commercial and industrial high-bay spaces (warehouses, distribution centers, manufacturing floors, aircraft hangars, auto service bays, gymnasiums, loading docks) with ceilings 12 ft and above, where direct radiant delivery to occupants and surfaces is preferred over convective air heating; natural gas or propane, vented or unvented, overhead-, angle-, or wall-mounted.

field-installed and replacement forced-circulation air-cooling and air-heating coils for commercial, institutional, and industrial HVAC systems — hydronic chilled water and hot water coils, standard and distributing (non-freeze) steam coils, direct-expansion refrigerant coils, and glycol runaround heat-recovery coils set in air handlers, fan coil units, unit ventilators, and inline duct sections, whether supplied with a unit or fabricated to retrofit an existing casing. Governs coil construction, AHRI 410 performance rating and certification, factory pressure testing, drain pan sizing and material, face velocity limits, and pull-out clearance.

Specifying packaged humidification equipment for ducted central air systems, air-handling units, and direct-space applications in commercial, institutional, healthcare, laboratory, cleanroom, museum, and data center projects. Covers isothermal (electrode, resistive-immersion, gas-fired, steam-to-steam, and direct steam injection) and adiabatic (high-pressure atomizing, ultrasonic, and wetted-media evaporative) humidifiers, their dispersion assemblies, water-quality coordination, controls, and safeties.

Room-side air distribution devices that terminate a ducted or plenum air system at the boundary of an occupied space - supply outlets (square and rectangular face, round face, linear slot, swirl, displacement, light-fixture-integrated), return and exhaust inlets, and transfer openings, together with the frames, cores, integral dampers, and finishes furnished as part of the device. Covers the performance criteria that govern occupant comfort and acoustic acceptability (throw at 50, 100, and 150 fpm terminal velocities, ADPI, occupied-zone air speed, occupied-space sound level), device materials for dry, wet, and corrosive service, exposed finishes, security and anti-ligature construction, installation and support, and field balancing and verification. Applies to new construction and to renovation where devices are connected to a distribution system.

specification, material selection, performance rating, and installation of duct accessories for commercial, institutional, healthcare, and industrial HVAC air distribution systems up to 10 in. w.g. — manual and motorized volume dampers (rectangular and round, opposed- and parallel-blade), backdraft dampers, duct access doors and panels, flexible duct connectors, turning vanes, duct silencers, duct test holes, and splitter dampers, in new construction and renovation.

Metal and flexible ductwork for low-pressure, medium-pressure, and high-pressure HVAC air distribution systems in commercial, institutional, and industrial buildings. Covers rectangular, round, flat-oval, and flexible duct; pressure and seal classifications; gauge and reinforcement; fittings and turning vanes; duct liner and external insulation; sealants; fire and smoke dampers; access doors; hangers and supports; leakage testing; and field verification. Applies to new construction and major renovation of supply, return, exhaust, and outside-air distribution systems.

General-purpose, field- or factory-installed air-moving equipment serving commercial, institutional, and light-industrial HVAC systems. Covers centrifugal fans (housed and plenum/plug type), axial fans (vaneaxial, tubeaxial, and propeller), inline (cabinet and tubular) fans, utility/SWSI exhaust fans, roof- and wall-mounted power ventilators (upblast and downblast), ceiling-mounted exhaust fans, and dedicated kitchen grease-exhaust fans. Addresses aerodynamic and sound rating and certification (AMCA 210 / 300 / 211 / 311), Fan Energy Index compliance under ASHRAE 90.1 (AMCA 208), AMCA construction class and drive arrangement, direct-drive and belt-drive selection, induction and electronically commutated (EC) motors, bearings, materials and finishes, spark-resistant construction for hazardous exhaust (AMCA 99), accessories, vibration isolation, and the electrical and controls interface to variable-frequency drives and the building automation system.

prefabricated in-duct sound attenuators, also called duct silencers, installed in supply, return, exhaust, outdoor-air, and relief ductwork to reduce fan and equipment noise reaching an occupied space, and in transfer ducts to reduce room-to-room cross-talk. This standard establishes the rating basis and test evidence the performance data must carry, the room noise criterion and space sound level estimation procedure the selection answers to, the attenuation credits the selection is allowed to take, the casing and acoustic media construction, the approach and flanking conditions that protect the rated performance in the field, and the post-installation verification that confirms it.

Design and specification of commercial kitchen exhaust ventilation for food service in new construction and major renovation — Type I grease-laden hoods (wall-canopy, island, low-profile/proximity), grease ducts, grease-rated exhaust fans, grease collection and rooftop terminations; Type II heat-and-steam hoods for non-greasy appliances; makeup air systems (direct-fired, indirect-fired, or untempered); and demand-controlled kitchen ventilation (DCKV). Applies to restaurants, cafeterias, commissary and hospital kitchens, hotel banquet and correctional food service, and any commercial cooking operation subject to IMC Chapter 5 and NFPA 96.

specifying, selecting, installing, and verifying laboratory exhaust and chemical fume hood systems for spaces that generate hazardous chemical, biological, or radiological vapors — CAV and VAV chemical hoods, specialty hoods (perchloric acid, radioisotope, high-heat/digestion, distillation), ductless recirculating hoods, manifolded and dedicated exhaust systems, high-plume dilution fans, make-up air devices, airflow monitors, and sash controls. Typical projects: university research labs, K-12 science classrooms, hospital and clinic labs, pharmaceutical support labs, and analytical labs.

Stationary exterior and interior louvers and the full range of air-control and life-safety dampers in commercial, institutional, and light-industrial buildings. Covers drainable-blade, storm-resistant (wind-driven-rain), sand-trap, acoustic, combination louver/damper, and penthouse/gooseneck louvers selected by free area and water-penetration class at the design intake velocity; air-control dampers (parallel- and opposed-blade) selected by AMCA 500-D leakage class; backdraft, gravity, and pressure-relief dampers; and the life-safety dampers required at rated barriers — fire dampers (UL 555), smoke dampers (UL 555S), combination fire/smoke dampers, and ceiling radiation dampers (UL 555C) — together with actuators, fusible and resettable links, sleeves, retaining angles, access, and the firestopping interface. Includes hurricane-zone (AMCA 540 / 550) and Florida/High-Velocity-Hurricane-Zone louver requirements and the AMCA Certified Ratings Program basis for ratings.

Dedicated air-handling units that condition and deliver 100% outdoor replacement air to offset large exhaust volumes in commercial, industrial, and institutional buildings - commercial kitchens, laboratories, spray-finishing booths, warehouses, manufacturing plants, and any occupancy where exhaust creates negative pressure. Covers packaged rooftop and indoor units (roughly 1,000 to 150,000 CFM) with direct gas-fired, indirect gas-fired, hot-water, steam, or electric heat; optional evaporative, DX, or chilled-water cooling; supply fans; mixing/recirculating dampers; and integral controls.

Factory-assembled, self-contained packaged units with an integral direct-expansion refrigeration circuit, set on a roof curb and serving a field-installed duct distribution system. Covers cooling-only, gas-fired, electric resistance, hydronic, and reverse-cycle heat pump heating configurations; constant-volume, multi-speed, and variable-air-volume supply fans; air-side economizers, powered relief, minimum outdoor air control, demand-controlled ventilation, and integral exhaust air energy recovery; the cabinet, filtration, drain pan, and roof curb; the refrigerant, its safety group, and the detection and mitigation provisions that go with mildly flammable refrigerants; unit-mounted controls and their interface to the building automation system; and the setting, connection, startup, and balancing of the installed unit.

self-contained through-the-wall PTAC (cooling plus resistance heat) and PTHP (reverse-cycle heat pump) chassis-and-sleeve assemblies providing room-level cooling, heating, and ventilation with independent zone control in hotels, motels, multifamily, dormitories, assisted living, and similar occupancies; new construction and replacement/retrofit.

Hydronic radiant heating and cooling panels at ceilings, floors, and walls in commercial, institutional, and high-performance residential buildings - including prefabricated metal radiant ceiling panels, concealed above-drywall panels, in-floor PEX or copper systems, wall panels, and thermally active building surfaces (TABS). Covers system layout, water temperature design, dew-point protection controls, balancing, and commissioning for low-noise, draft-free sensible conditioning of offices, labs, healthcare, and hospitality spaces.

Engineered mechanical smoke control systems triggered by code, including stairwell pressurization, elevator hoistway pressurization, zoned (floor-by-floor) smoke control, and atrium or large-volume mechanical exhaust, together with their dedicated fans, smoke and combination dampers, listed control panels, and firefighter's smoke control station.

Specifying matched split-system unitary air conditioners and air-source heat pumps, including ducted split systems (outdoor condensing/heat-pump unit matched to an indoor air handler or coil) and single-zone ductless mini-split systems, serving residential, light-commercial, and small-zone applications.

Factory-built terminal heating units that condition a single zone or localized area — hydronic, steam, and electric resistance unit heaters (propeller and blower/cabinet types), fin-tube radiation, convectors, electric baseboard, and electric force-flow heaters. Applies to vestibules, loading docks, stairwells, mechanical and electrical rooms, entries, and perimeter spaces.

self-contained, fan-driven space heaters serving unconditioned or intermittently occupied spaces (garages, warehouses, loading docks, mechanical rooms, vestibules, hangars). Covers propeller-fan and cabinet/blower unit heaters with hot-water, steam, gas-fired (natural gas or propane), or electric heating elements, including selection, mounting, discharge orientation, controls, clearances to combustibles, and venting/combustion-air provisions for gas-fired units.

zone-level pressure-independent variable air volume terminal units metering primary air from a central variable-volume air system, covering single-duct cooling-only and reheat units, parallel and series fan-powered units, and dual-duct variable-volume units. This standard establishes the zone airflow setpoint basis, the ventilation compliance basis, the energy-standard reheat and fan-power limits, the zone operating modes, the system reset requests the unit generates, and the field verification that confirms all of it.

Variable refrigerant flow (VRF/VRV) air-conditioning and heat pump systems serving commercial, institutional, and multifamily buildings, in which one or more inverter-driven condensing units circulate refrigerant through a piped network to multiple indoor fan-coil units, each metered by an electronic expansion valve. Covers heat pump (cooling-or-heating) and heat recovery (simultaneous cooling and heating) systems, air-cooled and water-source (water-cooled) condensing units, ducted and non-ducted indoor unit types, branch controllers and refrigerant selector boxes, A2L refrigerant safety and leak detection, and coordination of a dedicated outdoor air system for ventilation.

unitary water-source heat pump (WSHP) equipment rated below 135,000 Btuh and the shared building water loop (water-loop heat pump systems) that ties the units together, including loop conditioning equipment (boiler and cooling tower or fluid cooler) and the circulating pump system. Applies to new construction and retrofit in commercial, multifamily residential, hospitality, institutional, and mixed-use buildings where independent zone heating and cooling without dedicated outdoor units is required (hotels, apartments, offices, schools, assisted living). Covers vertical, horizontal, console, and through-the-wall configurations, water-to-air and water-to-water units, loop temperature design, and ASHRAE 90.1 energy-code compliance.

Central-plant chilled water (CHW) and condenser water (CW) distribution for commercial, institutional, industrial, campus, hospital, and data center cooling — large-diameter steel mains (4 in. through 36 in.) connecting water-cooled chillers to cooling towers and to air-side equipment. Covers plant headers, secondary/tertiary distribution, risers, buried/tunnel and above-grade installation, pre-insulated and field-insulated systems, header isolation/balancing/check valves, strainers, flow metering, expansion compensation, open-circuit corrosion control, condensation-control insulation, and pressure testing/flushing within ASME B31.9 limits (150 psig, below 200°F).

Selecting and installing devices and fabricated configurations that absorb thermal growth in mechanical piping - metallic bellows joints (single, tied, hinged, gimbal, pressure-balanced), slip/sleeve joints, rubber/elastomeric joints, ball-joint pairs, and fabricated expansion loops (U-loops, L-offsets, Z-offsets) - for hydronic, steam and condensate, and domestic hot-water recirculation systems, plus the anchors and guides integral to their function.

Pressurization and air management equipment for closed hydronic heating and cooling systems - diaphragm and bladder expansion tanks, open compression tanks, inline and tangential air separators, microbubble and combination air-and-dirt separators, and automatic air vents. Covers selection, sizing, pre-charge setting, fill-pressure coordination, location relative to the pump, and air-elimination train integration for closed loops from 15 to 300 psig and 32 to 240 °F (commercial HVAC, process and data center cooling, hot water recirculation).

The fuel-oil system that carries No. 2 diesel, biodiesel blends, and heating oil from the nozzles of the storage tanks to the supply and return connections of stationary engine-generators, oil-fired boilers, and other oil-burning equipment on commercial, institutional, industrial, data center, and utility projects. Covers the transfer pump set and its controller, the day-tank fill, overflow, and level logic, the fuel-oil system monitoring console where one is furnished, the supply, return, overflow, fill, and vent piping beyond the tank nozzles, the valves and safety devices in that piping, the leak detection of double-wall piping, transfer filtration and water separation, fuel polishing, tank and pipe heating for cold weather, the pressure testing, flushing, and functional testing of the assembled system, installation, warranty, and spare parts.

interior natural gas and LP (propane/butane) fuel gas distribution piping inside and immediately serving commercial, institutional, and industrial buildings - from the building entry, utility meter/regulator set, or LP tank connection through to individual appliance connections. Covers piping materials (Schedule 40 steel, CSST, copper, buried PE), joints, pressure regulators, relief devices, shutoff valves, flexible appliance connectors, sizing and pressure-drop, bonding, and pressure testing at low (up to 2 psi) and medium (2-5 psi) interior pressures for boiler plants, commercial kitchens, laboratories, process heating, and standby generator fuel trains.

Factory-built fuel storage tanks furnished as vessels for stationary fuel-burning equipment on commercial, institutional, industrial, data center, and utility projects: the aboveground diesel and fuel-oil tank listed to UL 142, UL 2080, UL 2085, UL 80, or UL 2258, the underground tank listed to UL 58 with UL 1746 corrosion protection or to UL 1316, the tank set in a below-grade vault listed to UL 2245, the generator sub-base tank as a vessel, the day tank as a vessel, and the ASME liquefied-petroleum-gas container that stores propane for an engine-generator, a boiler, or other on-site equipment under NFPA 58. Covers the listing and construction, the secondary containment, the overfill prevention and spill containment at the fill, the normal and emergency vent devices, the leak detection sensors, the level gauging, the corrosion protection, the anchorage and flotation restraint, the foundation interface, factory and field tightness testing, delivery, warranty, and spare parts. The scope ends at the tank nozzles and, for a propane container, at the outlet of the container service valve.

General-duty, non-control isolation, shutoff, and non-modulating throttling valves in HVAC piping — hot-water heating, chilled water, condenser water, steam and condensate, and dual-temperature hydronic circuits in commercial, institutional, and industrial buildings. Covers gate, globe, ball, butterfly, check, and plug valves, NPS 1/4 through NPS 12 and larger, in bronze, brass, cast iron, ductile iron, and steel, Class 125 through Class 300.

Selecting, specifying, and installing hangers, supports, anchors, guides, restraints, and structural attachments for mechanical piping (steel, copper, CPVC, PEX, glass, stainless) from cryogenic up to 750 °F, 1/2 in. through 24 in. and larger, and for floor- and structure-mounted mechanical equipment (pumps, boilers, heat exchangers, fan-coil units, condensing units, packaged skids). Covers rod sizing, structural attachments, trapeze assemblies, variable- and constant-spring supports, thermal anchors and guides, and seismic bracing per ASCE 7-22 Chapter 13 / IBC 2024, for new construction and renovation on projects of all sizes.

Primary and secondary (overflow) condensate drainage piping serving HVAC cooling and dehumidification equipment — cooling coils, evaporator coils, packaged rooftop units, split-system air handlers, fan coil units, chilled beams, and dehumidifiers — in commercial, institutional, and industrial buildings, new construction or renovation. Covers pipe material and sizing, slope, support spacing, traps, condensate lift pumps, overflow protection, insulation, and termination at the point of disposal.

Rotodynamic (centrifugal) pumps that circulate water and water-glycol solutions for building heating, cooling, and heat-rejection service. Covers closed-loop heating hot water and chilled water pumps, open-loop condenser water pumps serving cooling towers and fluid coolers, condenser loops serving water-source heat pumps, and the vertical turbine pumps used where the supply level sits below the pump. Addresses the pump end, the driving motor, the baseplate or frame, the coupling, shaft sealing, vibration isolation, factory and field acceptance testing, and the coordination items that decide whether the installed pump reaches its certified curve.

The ongoing chemical and physical water treatment program for HVAC water systems in commercial, institutional, and industrial buildings. Covers closed hydronic loops (heating hot water, chilled water, dual-temperature, water-source and ground-source heat pump loops, and inhibited-glycol loops), open recirculating condenser water systems served by cooling towers and evaporative condensers, and steam and condensate systems at or below 150 psig. Addresses make-up water characterization, corrosion and scale inhibitor chemistry, biocide programs, cycles of concentration and bleed control, chemical feed and controller equipment, side-stream filtration, sample ports and routine monitoring, corrosion coupon reading, the Legionella risk-management documentation required under ANSI/ASHRAE 188, the service contract that sustains the program, and seasonal lay-up.

Closed-loop hydronic distribution piping for heating hot water (HHW), chilled water (CHW), dual-temperature water (DTW), and condenser water (CW) in commercial, institutional, and industrial buildings, within the ASME B31.9 building-services envelope (up to 160 psig and 250°F). Covers pipe material and wall selection by service and size band, joining methods, fittings and flanges, dissimilar-metal isolation, delivery and storage, piping installation and routing discipline, the interfaces to supports, expansion compensation, valves, specialties, insulation, identification, and system cleaning, and the structural pressure test that proves the installed system.

The in-line devices that make a closed-loop hydronic distribution system balanceable, protected, readable, and serviceable, installed in heating hot water, chilled water, dual-temperature, and condenser water piping within the ASME B31.9 building-services envelope. Covers manual calibrated balancing valves, automatic flow-limiting valves, differential pressure control valves, pressure-independent control valves furnished complete with their actuator, Y-pattern and basket strainers, suction diffusers, triple-duty valves and pump discharge assemblies, flexible pipe connectors, chemical bypass feeders, makeup water fill assemblies and glycol makeup packages, system relief valves, pressure gauges, thermometers and thermowells, pressure and temperature test plugs, manual air vents and hose-end drain valves, and factory or field-assembled coil connection assemblies.

Field-applied thermal insulation for mechanical piping, ductwork, and equipment in commercial, institutional, and light-industrial buildings. Covers insulation of heating hot water, steam, steam condensate, and other hot service piping; chilled water, dual-temperature, and other below-ambient service piping that requires a continuous vapor barrier; HVAC supply, return, outside-air, and exhaust ductwork (concealed and exposed, indoor and outdoor); and mechanical equipment such as tanks, breechings, pumps, and heat exchangers. Includes selection of insulation material by service (mineral or glass fiber, closed-cell elastomeric, rigid cellular phenolic, cellular glass, and calcium silicate for high temperature), insulation thickness by the adopted edition of ASHRAE 90.1, jacketing and vapor retarders (all-service jacket indoors, PVC fitting covers, metal jacket outdoors and in mechanical rooms), insulated pipe supports and protection shields, penetration coordination, and the condensation-control provisions that govern cold-service work.

Field-installed refrigerant piping that interconnects the components of split-system air conditioners and heat pumps, variable refrigerant flow systems, direct-expansion coils, computer room units, and packaged equipment supplied with a field-piped condensing section. Covers tube material and temper, joining methods and brazing filler metal, braze purge, field-installed specialties, line routing, oil return, insulation and its vapor seal, supports and seismic restraint, penetrations and firestopping, refrigerant concentration limits and the detection and mitigation provisions that go with mildly flammable refrigerants, piping identification, and the pressure test, evacuation, decay test, and charging sequence that puts the system into service.

Embedded radiant snow and ice melting in outdoor hardscape: walks, plazas, entrance aprons, exterior stairs and ramps, accessible routes, drives, loading dock approaches, and parking aprons, heated by hydronic tubing carrying an inhibited glycol solution or by electric heating cable or mat cast into concrete, placed in asphalt, or set beneath unit pavers. Covers the snow melting class and the design surface heat flux as the design basis, the slab-side hydronic circuit (tubing, spacing, circuit hydraulics, glycol type and concentration for the snow melt loop, and the manifolds), the electric heating element under NFPA 70 Article 426 with its ground-fault protection of equipment, the automatic and manual controls with their sensors, setpoints, and idle mode, the insulation beneath the heated pavement, embedment depth and attachment, testing before, during, and after the pavement is placed, and the record drawing of the circuit layout.

Steam supply and condensate return distribution piping for institutional, campus, healthcare, industrial, and central-plant facilities, above-grade and underground, from the boiler outlet connections to the inlet flanges of terminal equipment (heat exchangers, unit heaters, steam coils, and process loads). Covers low-pressure (0-15 psig), medium-pressure (15-100 psig), and high-pressure (100-300 psig) service, including pipe materials and joining by pressure class, expansion compensation, drip legs and steam traps, condensate receivers and pumps, pressure-reducing stations, flash tanks, valves, system insulation requirements, slope, and hydrostatic testing.

Remote outdoor air-cooled condensing units (ACCUs) in split direct-expansion (DX) systems from roughly 1.5 to 130+ tons, where the evaporator is a physically separate fan-coil, DX air handler, or process coil joined by field refrigerant piping. Covers scroll, reciprocating, and screw compressors; single- and dual-circuit units; HFC/HFO/A2L refrigerants; rooftop, pad, and wall-bracket installations on commercial, light-industrial, retail, and server-room occupancies, including heat-pump units in cooling mode.

Packaged heating boilers that generate hot water or low-pressure steam for building space heating and for heating loops that serve coils, heat exchangers, and indirect equipment, in commercial, institutional, and industrial buildings, constructed and stamped to ASME BPVC Section IV. Covers gas-fired, oil-fired, dual-fuel, and electric boilers; condensing and non-condensing combustion; fire-tube, water-tube, sectional, and finned-tube heat exchangers; single and multiple-boiler plants; the pressure vessel with its trim, relief valve, low-water cutoffs, and limit controls; the burner, the fuel train downstream of the appliance shutoff valve, and burner management; combustion air, flue venting, breeching, and draft control at the boiler; flue gas condensate neutralization; the boiler control interface to the building automation system; factory testing, startup, and field testing; anchorage; warranty; and spare parts.

Factory-assembled vapor-compression liquid chillers that produce chilled water or a chilled water-glycol solution for building cooling and for process cooling in the same temperature range. Covers centrifugal, screw, scroll, and reciprocating compressor machines across the full commercial and institutional capacity range, with water-cooled, air-cooled, evaporatively cooled, and remote-condenser heat rejection. Addresses the compressor and its drive, the evaporator and condenser pressure vessels, the refrigerant circuit and its safety devices, the unit controller and its interface to the building automation system, the integral power and starting equipment, factory and field acceptance testing, and the setting, clearance, and connection items that decide whether the installed machine reaches its certified rating.

Selecting walk-in coolers and freezers (prefabricated modular panel systems and self-contained units), reach-in refrigerators and freezers, refrigerated display cases, under-counter and prep-table refrigeration, and packaged self-contained refrigeration systems for food service, healthcare, grocery, cold-storage, and laboratory facilities. Covers the refrigeration system, insulated panel enclosure, doors and hardware, controls, and DOE energy-efficiency compliance for maintained temperatures from roughly +55°F down to −40°F.

Open-circuit and closed-circuit (fluid cooler) evaporative heat-rejection equipment for HVAC condenser water systems serving water-cooled chillers, water-source heat pump loops, and process cooling in commercial, institutional, and industrial buildings. Covers field-erected and factory-assembled (packaged) towers; induced-draft and forced-draft configurations; counterflow and crossflow arrangements; galvanized steel, stainless steel, and fiberglass (FRP/HDPE) construction; axial and centrifugal fans with constant-speed, two-speed, and variable-speed drives. Applicable from small rooftop packaged towers through large multi-cell field-erected installations.

Gas-fired warm-air (central forced-air) furnaces serving as primary heating equipment in small commercial, light-industrial, and institutional buildings, generally up to 225,000 Btu/hr input. Covers upflow, downflow/counterflow, and horizontal cabinet furnaces; non-condensing (80% AFUE) and condensing (90%+ AFUE) types; natural gas and propane firing; standing-pilot and electronic (hot-surface or direct-spark) ignition; single-stage, two-stage, and modulating burner arrangements; all NFPA 54/IFGC vent categories (I, III, IV); and accessories furnished with the furnace (filters, integral controls, ignition and safety systems, matched cooling-coil cabinets).

Liquid-to-liquid heat exchangers serving building HVAC and plumbing systems, including gasketed plate-and-frame, brazed-plate, and shell-and-tube units for hydronic heating and cooling, steam-to-water heating, domestic water heating and preheat, glycol/water heat recovery, and pressure or thermal isolation between system circuits.

Networked direct digital control (DDC) systems that supervise and execute control of HVAC and ancillary mechanical building systems. Covers the management, supervisory, field controller, and field bus layers; controller and network conformance; operator workstation and graphics; scheduling, alarming, and trending; field sensors and control actuators; equipment integration points; the operational technology cybersecurity baseline; installation, commissioning, and closeout. Applicable to new construction, whole-system replacement, and expansion of an existing control system.

The field-device layer of a building automation system: the sensors, transmitters, switches, thermostats, and actuators wired or networked to the field controllers that execute HVAC sequences of operation. Covers space sensors and thermostats; temperature sensor assemblies with probes, averaging elements, thermowells, and radiation shields; humidity, carbon dioxide, and indoor air quality sensors; pressure transmitters and switches; equipment status, flow-proving, low-temperature, and condensate overflow switches; occupancy signal sources for HVAC; airflow measurement station hardware; water leak detectors and interposing relays; automatic control valves for hydronic and steam coils; electric damper and valve actuators; and pneumatic control devices where a pneumatic system is retained. Addresses supply and signal interface, wireless sensor policy, enclosure ratings by location, device-level acceptance testing, and spares, for new construction, whole-system replacement, and expansion of an existing control system.

Separately procured pulse width modulated variable frequency drives rated 600 V and below, controlling three-phase AC induction motors on HVAC air and hydronic equipment — supply, return, and exhaust fans, chilled water, condenser water, and hot water pumps, and cooling tower fans. Covers drive ratings, enclosure and cooling selection, harmonic performance, bypass and disconnecting means, motor and cable compatibility, protective functions, building automation integration, testing, and installation for drives in mechanical rooms, electrical rooms, penthouses, and outdoor locations.

The one-time preparation of a hydronic system's wetted interior between the piping pressure test and the start of the ongoing water treatment program, performed by the installing contractor on new systems and on extensions of existing systems in commercial, institutional, and industrial buildings. Covers the fill and the fill water baseline, the chemical cleaning step where one is selected, high-velocity flushing with its velocity calculation, flush pump, passes, and sampling, the protection and bypassing of coils, control valves, heat exchangers, and plant equipment during the flush, flush acceptance by measurement (clarity, turbidity, pH, conductivity, iron, suspended solids), disposal of the flush water and spent cleaner, passivation of the cleaned metal with the inhibitor chemistry of the ongoing program, installation of the corrosion coupon rack, the initial glycol charge where the system carries glycol, the signed cleaning, flushing, and passivation report that releases the system to balancing, startup, and treatment, and the flushing of the field piping of open condenser water systems. Applies to heating hot water, chilled water, dual-temperature, water-source and ground-source heat pump, closed-circuit condenser, inhibited-glycol, snow melt, and runaround loops in any pipe material and at any size.

Independent third-party testing, adjusting, and balancing (TAB) of HVAC air and hydronic systems for new construction and major renovation of commercial, institutional, and industrial buildings. Covers TAB agency and personnel qualifications; instrument selection and calibration; preliminary, full, and final TAB reports; air-side procedures (duct traverse, terminal device measurement, outdoor air verification, fan curve verification); hydronic procedures (flow station readings, coil balancing valve adjustment, pump curve verification); sound and vibration spot checks; deficiency reporting back to the installing contractors; and seasonal re-balance work. TAB shall conform to NEBB Procedural Standards for Testing, Adjusting, and Balancing of Environmental Systems (current edition), AABC National Standards for Total System Balance (current edition), or ASHRAE 111, as selected by the Engineer.

The commissioning process for the mechanical, electrical, plumbing, life-safety, enclosure, and specialty systems of a new building or a major renovation, run under ANSI/ASHRAE/IES 202 and ASHRAE Guideline 0, with ASHRAE Guideline 1.1 for the HVAC&R systems and the commissioning requirements of the adopted energy code where they apply. Covers the commissioning authority, its qualifications, its engagement and its independence, the Owner's Project Requirements and the Basis of Design and their review, the commissioning plan, the design-phase reviews and the review of submittals for commissioned systems, the construction checklists, the format and conduct of functional performance tests, the integrated systems test and the integrated testing agent where NFPA 4 applies, the issues log, the seasonal and deferred tests, the verification of operator training, the systems manual, the progress and final commissioning reports and their formats, the warranty-period review, and monitoring-based commissioning where it is included. Carries the decision of which system families are commissioned, and admits building enclosure commissioning under ASTM E2813 as one of them.

free-hanging sound-absorbing clouds, baffles, and canopy assemblies independently suspended from structural decks or exposed structure in open-plenum commercial interiors - open offices, education spaces, healthcare waiting and corridors, hospitality, and performing-arts venues - where a full suspended acoustical ceiling is impractical or aesthetically undesired. Covers horizontal floating clouds, vertical baffles and blades, hybrid canopies, suspension hardware, fire classification, acoustical performance, and coordination with sprinklers, MEP, and seismic bracing.

Prefabricated, surface-applied, and suspended sound-absorptive panels whose face is exposed to view and whose primary function is sound absorption in occupied commercial, institutional, educational, healthcare, and performing-arts spaces — including fabric-wrapped fiberglass and mineral-wool panels, perforated-metal panels with absorptive infill, wood-slat and wood-veneer acoustic panels, PET/recycled-fiber panels, foam panels, ceiling clouds, baffles, and banners.

Tufted, woven, fusion-bonded, and needle-punched carpet in modular tile and broadloom formats installed over concrete, wood panel, and raised access floor substrates in commercial, institutional, healthcare, educational, hospitality, and multi-family interiors. Covers format and construction, pile configuration, face fiber and dye method, face weight, pile thickness and density, appearance retention, tuft bind and delamination strength, modular tile and broadloom backings, critical radiant flux and smoke density, static control, colorfastness, low-emitting and sustainability certification, accessibility of the walking surface, substrate acceptance for carpet including concrete moisture and alkalinity testing and mitigation, releasable adhesive, direct glue-down, double-glue, and stretch-in attachment, separate cushion, seaming, transitions, field inspection, cleaning, warranty, and attic stock.

Portland-cement-based, polymer-modified self-leveling floor toppings applied over concrete, wood, or existing resilient substrates to produce a flat, smooth, level surface in preparation for finish flooring; new construction and renovation in commercial, institutional, multifamily, and light industrial work where tolerances finer than FF 25 (3/16 in. in 10 ft) are required; bonded and unbonded pours from feather-edge to 3 in., primer selection, substrate preparation, moisture mitigation, and encapsulation of in-floor radiant heating elements.

Ceramic, porcelain, quarry, glazed wall, and mosaic tile, and gauged porcelain tile panels and slabs, installed by the thin-bed (thin-set) method over interior and protected exterior floors, walls, wainscots, tub and shower surrounds, and countertops in commercial, institutional, healthcare, educational, hospitality, and multi-family construction. Covers tile selection and water-absorption classification, slip resistance, setting materials (dry-set and modified mortars, organic adhesive, epoxy), bonding mortar selection by substrate, crack-isolation and waterproof membranes, grout type selection (cementitious and epoxy), movement-joint design, substrate preparation and flatness, large-format and gauged-panel installation, field testing, and warranty.

Permanently installed entrance flooring and walk-off systems that capture moisture, soil, grit, and snowmelt from foot and rolling traffic at building entrances before it reaches the interior finish floor. Covers recessed and surface-mounted rail grilles with replaceable tread inserts in lift-out, hinged, and roll-up construction, recessed and surface-mounted link and modular mats, and walk-off carpet tile and broadloom in the interior wiper zone. Addresses the arrangement of the exterior scraper, threshold scraper-wiper, and interior wiper zones, walk-off length, rail and frame materials, recess depth and drainage, rolling load rating, tread inserts, accessibility of the walking surface, slip resistance, flammability and low-emitting requirements for textiles, installation, cleaning, warranty, and attic stock.

thin-film to medium-build two-component epoxy floor coatings (100% solids, solvent-borne, or waterborne) applied by roller or squeegee over prepared concrete slabs for protection and appearance in commercial, institutional, and light-to-medium duty industrial spaces — back-of-house corridors, mechanical and electrical rooms, storage and warehouse floors, school gymnasiums and corridors, light-duty institutional kitchens, light manufacturing, and pedestrian parking decks; dry film thicknesses from roughly 3 mil (waterborne sealer) to 30 mil (high-build or broadcast decorative systems); single-coat sealers, two-coat base/topcoat systems, vinyl-chip and color-quartz broadcast systems, and aliphatic polyurethane or polyaspartic topcoats over epoxy.

Field-applied decorative and protective coating systems on the exterior architectural substrates of commercial, institutional, and multi-family residential buildings: cast-in-place and precast concrete, concrete masonry, portland cement plaster (stucco), hollow metal doors and frames, miscellaneous metals and metal fabrications, exposed structural steel over its shop primer, galvanized steel including the factory-primed curtains and sections of coiling and sectional doors, aluminum and other non-ferrous metals, wood siding, trim, soffits, and doors, fiber-cement siding and trim, and previously painted exterior surfaces. Covers the finish and primer chemistry for each substrate (acrylic latex, elastomeric, high-build acrylic, waterborne acrylic-epoxy, mineral silicate, alkyd, waterborne acrylic-urethane, two-component aliphatic polyurethane, and the opaque, semi-transparent, and clear finishes for wood), surface preparation grades, substrate moisture and cure, application weather limits, sheen, number of coats and film thickness, color matching, volatile organic compound limits, mildew resistance, anti-graffiti coatings, mock-ups, field verification of thickness and adhesion, touch-up, warranty, and extra stock.

Field-applied protective coating and lining systems selected for the service a surface sees rather than for its appearance: chemical splash and spill, immersion in water, wastewater, sludge, or chemicals, the hydrogen sulfide vapor space of wastewater structures, industrial washdown, abrasion, and the interior and exterior atmosphere of a water, wastewater, chemical, food, pharmaceutical, or industrial facility. Covers the field finish system over the shop primer, shop epoxy, or galvanizing of exposed process piping, valves, gates, actuators, pumps, equipment, structural steel, metal fabrications, gratings, and miscellaneous metals where the service demands more than architectural paint; the coating of exposed plastic piping for ultraviolet protection and identification; thin-film and high-build coatings on concrete, masonry, and gypsum board walls and ceilings in washdown and chemical rooms; linings of concrete and steel structures in immersion, wastewater, and chemical service that are not furnished with equipment; and secondary containment linings. Covers the service classes, the surface preparation grades and profiles for steel, galvanizing, plastic, and concrete, moisture and soluble salt limits, the generic primer, intermediate, and finish coat of each system and its dry film thickness, holiday, adhesion, and thickness verification, applicator and inspector qualification, color, gloss, and flame spread, volatile organic compound limits, cure before service, warranty, and extra stock.

Field-applied surface preparation, primers, and finish coatings on interior architectural substrates — gypsum board, plaster and veneer plaster, concrete, concrete masonry, ferrous and galvanized metal, and interior wood — in commercial, institutional, and multi-family residential buildings. Covers latex, alkyd, and water-based epoxy paint systems applied to walls, ceilings, doors and frames, exposed structure, and exposed mechanical and electrical work that is to be field-painted.

interior architectural ceilings and exterior soffit cladding built from formed or pan-style metal panels (aluminum or steel) in commercial, institutional, hospitality, retail, and transportation spaces — lay-in metal pan tiles in suspended grid, linear/plank systems on concealed carriers, concealed-fastener cassettes, and perforated panels with acoustic backers for lobbies, concourses, terminals, transit stations, canopies, parking structures, and high-humidity or food-processing environments where mineral-fiber tile is unsuitable.

Interior and protected exterior natural dimension-stone tile, cut-to-size stone, and gauged thin stone slab — granite, marble, limestone, travertine, slate, quartzite, sandstone, serpentine, onyx, soapstone, and basalt — set on floors, walls, wainscots, stair treads and risers, thresholds, base, and countertops. Covers stone type and the governing ASTM dimension-stone material specifications, physical-property and abrasion testing, slip resistance, form, dimensions, and surface finish, pattern and vein match, setting method and bonding mortar, crack-isolation and waterproof membranes, joint filler and joint width, movement-joint design, substrate preparation and moisture, installation, field inspection, cleaning, and sealing.

Mechanically ground, honed, and polished concrete floor finishes produced in place by progressive bonded-abrasive diamond processing of a structural or topping concrete slab, including chemical densification and optional coloring with dye or stain. Covers true bonded-abrasive polishing (full grind-hone-polish to a measured gloss and clarity), grind-and-seal finishes, and burnished guard finishes; aggregate exposure selection (cement fines, fine aggregate, coarse aggregate), gloss and clarity levels, densifier chemistry, joint and crack filling, slip resistance, abrasion resistance, and the coordination required to protect a finished slab that is also the building's structural floor.

Interior resilient floor coverings and resilient wall base in commercial, institutional, healthcare, educational, hospitality, and multi-family construction: luxury vinyl tile and plank, rigid core vinyl plank, vinyl composition tile, homogeneous and heterogeneous sheet vinyl, rubber tile and sheet, sheet and tile linoleum, resilient wall base, resilient stair treads, transition strips, and the adhesives, seam welding, integral flash cove, and static control grounding that go with them. Covers product type and class, wear layer and overall thickness, critical radiant flux and smoke density, slip resistance, static load, chemical resistance, low-emitting materials, static control resistance, substrate acceptance including concrete moisture and alkalinity testing and topical moisture mitigation, full-spread adhesive, loose lay, and floating installation, heat and chemical welding, field inspection, initial finish, cleaning, warranty, and attic stock.

Fluid-applied, seamless resinous floor finishes installed over concrete in commercial, institutional, industrial, food and beverage, healthcare, laboratory, and cleanroom applications. Covers epoxy, polyurethane, cementitious urethane (urethane mortar), methyl methacrylate (MMA), and polyaspartic resin chemistries; thin-film coating, broadcast (sand, quartz, or vinyl flake) media, and trowel-applied mortar system types; slip resistance, chemical and thermal-shock resistance, abrasion, and electrostatic-dissipative and conductive (ESD) systems; concrete surface preparation and profiling, moisture testing and topical moisture mitigation, integral cove base, and seamless wall-to-floor detailing.

Direct-hung metal suspension grid systems and acoustical panels or tiles — both exposed-tee lay-in and concealed-spline — for commercial, institutional, healthcare, educational, and hospitality interiors. Covers the suspension grid (type, profile, duty classification, and finish), acoustical panels (material, size, edge detail, and surface texture), acoustical performance (NRC and CAC), light reflectance, surface-burning fire performance, fire-resistance-rated ceiling membrane assemblies, seismic restraint and perimeter treatment, hold-down clips, trim and moldings, hanger wire and bracing, and integration with light fixtures, air devices, and sprinkler heads.

Poured-in-place terrazzo floor and base finishes for commercial, institutional, civic, educational, healthcare, and transportation interiors — epoxy (resinous) thin-set terrazzo and the cementitious systems (polyacrylate, monolithic, bonded, and sand-cushion). Covers matrix system selection, marble/granite/glass/recycled aggregate, divider and control strips, substrate flatness and moisture testing, physical-property requirements for the resin matrix, crack-isolation and joint detailing, grinding/grouting/polishing/sealing, integral cove and topset base, and precast terrazzo bases and stair treads. Suitable for new construction and for terrazzo restoration where the existing system is sound.

Flexible wall coverings applied to interior wall and ceiling surfaces in commercial, institutional, healthcare, hospitality, education, and multi-family residential construction — vinyl-coated fabric (Type I, II, and III per ASTM F793), textile and natural-fiber coverings, cork, and digitally printed coverings. Covers use-type and durability selection, facing material, fire-performance classification, adhesive selection, substrate preparation, seam treatment, moisture-vapor control, low-emitting certification, and finished-surface performance for new construction and renovation.

Interior wood finish flooring — solid sawn strip and plank, engineered multi-ply flooring, parquet tile and block, end-grain block, and maple sports flooring — installed over wood framing, wood panel subfloors, and concrete slabs above, on, and below grade. Covers construction, species, cut, grade, and dimension selection; in-service interior climate and acclimation criteria; concrete and wood substrate moisture testing and moisture control; nail-down, staple-down, adhesive, and floating attachment; factory-applied and site-applied finish systems; expansion provisions; fire and emissions requirements; and field verification, maintenance, and warranty provisions.

Architectural access doors and panels set into walls and ceilings to provide concealed, repeatable access to valves, dampers, cleanouts, junction boxes, shutoffs, and other serviceable equipment hidden behind a finished surface. Covers panel type by substrate and finish (flush universal for drywall, masonry, and plaster; recessed for tile; recessed for drywall or plaster infill; drywall-bead taping-flange; surface-mount), gasketed and insulated panels for exterior or thermal-barrier locations, fire-rated access doors that are UL or ULC listed and labeled (insulated, self-closing, self-latching, for use in fire-resistance-rated wall and ceiling assemblies under IBC Section 716), security panels with no exposed hardware, materials and gauges (cold-rolled and galvannealed steel, stainless steel, aluminum), frame types for each substrate, latch and hinge selection, prime and factory finish, sizing for the largest serviceable component, accessibility of operable parts, and coordination so a panel is provided wherever a concealed device requires service.

frameless all-glass entrance assemblies for commercial, institutional, and high-end retail lobbies where a fully glazed, frame-free appearance is required — single and double swing doors, sliding all-glass panels, and folding systems fabricated from monolithic tempered or tempered laminated glass supported entirely by patch fittings, rail systems, pivots, floor closers, and overhead concealed closers, for interior and exterior storefront-type openings in new construction and renovation.

Non-load-bearing extruded aluminum framing systems glazed with monolithic or insulating glass, and the aluminum stile-and-rail swing entrance doors integrated with them, at building perimeters and interior partitions. Covers framing depth, sightline, joinery, glazing pocket position, and thermal barrier construction; glass lite construction, insulating glass unit make-up, edge seal, and low-emissivity coatings; dry, wet, and structural silicone glazing methods; air infiltration, water penetration, structural wind load, thermal transmittance, solar heat gain, condensation, acoustic, windborne debris, and inter-story drift performance; entrance door leaf proportions, construction, hardware, thresholds, and weatherseals; anodic and organic finishes; perimeter anchorage, sill water management, and air and water control layer continuity; laboratory and field testing; installation, cleaning, protection, and warranty.

Power-operated, full-energy automatic pedestrian entrance door systems at commercial, institutional, retail, healthcare, and public building entries — sliding (single-slide, bi-part, telescoping), full-energy automatic swing, and folding assemblies, with their operators, activation and safety sensors, guide rails, thresholds, framing, and integral glazing, for interior and exterior entries that open on approach or by a knowing act.

Finish hardware for swinging door openings specified and furnished as its own package, separate from the door leaves and the frames, in commercial, institutional, educational, healthcare, hospitality, and multi-family residential work. Covers the hardware schedule and numbered hardware sets as the coordination instrument; ANSI/BHMA operational grades; butt hinges, continuous hinges, pivots, and self-closing hinges; bored, mortise, interconnected, and tubular locksets and latches, auxiliary locks, and trim; cylinders, interchangeable cores, keyway control, keying hierarchy, construction keying, and key control; panic hardware and fire exit hardware; door closers, overhead stops and holders, and fire-alarm-released hold-open devices; door stops, silencers, protection plates, and push and pull trim; coordinators, flush bolts, and removable mullions at pairs; thresholds, weatherstripping, smoke and acoustic gasketing, intumescent edge seals furnished under the hardware sets, and automatic door bottoms; patch fittings, rails, pivots, locks, and closers for all-glass swing doors in interior partitions; electrified locks, strikes, exit devices, electromagnetic locks, delayed egress devices, and the power transfer into the leaf; low-energy power-operated and power-assist swing door operators under ANSI/BHMA A156.19 with their knowing-act actuators; hardware finishes; accessible-opening obligations; installation, adjustment, field verification, fire door acceptance inspection, warranty, and spare parts.

Swinging door openings furnished as one combined package of hollow metal doors and frames, architectural wood flush doors, and finish hardware, in commercial, institutional, and light-industrial construction. Covers the opening schedule as the coordination instrument; hollow metal performance levels, models, face-sheet materials, cores, frame thickness, profile, construction method, anchorage, grout fill, and factory finish; wood door duty levels, appearance grades, cores, face materials, veneer selection and matching, edges, and finishing; fire-rated and smoke-rated listed assemblies under NFPA 80, NFPA 105, and UL 10C; hinges, locksets, exit devices, closers, stops, protection plates, thresholds, and gasketing; cylinders, keyways, and keying hierarchy; electrified hardware, fail modes, power transfer, and fire alarm release; accessible-opening obligations; installation tolerances and clearances; fire door inspection at turnover; and warranty.

vision glass set into fire-resistance-rated walls and partitions as a listed opening protective — fire-protective glazing (20-90 min, resists flame and hot gases) and fire-resistive glazing (45-120 min, also limits radiant heat) with their complete tested steel, aluminum, or composite framing systems. Covers fire-rated windows, sidelights, transoms, full-height rated glass walls, and the glazed infill within fire-rated door leaves in fire barriers, fire partitions, fire walls, corridor walls, and exit enclosures.

Architectural vision glass and glazing for storefronts, curtain walls, windows, exterior and interior doors, sidelights, transoms, borrowed lites, partitions, and other building glazing infill. Covers annealed, heat-strengthened, and fully tempered flat glass; laminated glass; coated (low-emissivity and solar-control) glass; insulating glass units (IGUs) including double and triple makeups; spandrel and ceramic-frit glass; safety glazing in hazardous locations per the International Building Code; glass strength and thickness determination under wind and snow load per ASTM E1300; thermal stress and edge-condition selection of annealed versus heat-strengthened versus fully tempered glass; nickel-sulfide heat-soak treatment for tempered glass; low-iron glass; warm-edge spacers and inert-gas fill; structural silicone and dry-gasket glazing methods; setting blocks, edge clearances, and glazing accessories; and field installation, testing, cleaning, and warranty of the glass and glazing materials.

Aluminum-framed glazed curtain wall acting as the primary non-load-bearing exterior enclosure of a building — stick-built, semi-unitized, and unitized systems that span vertically across one or more stories and hang from the building frame at discrete anchors. Covers the assembly method, the water management principle and internal drainage, mechanically captured and structurally silicone-glazed retention, framing member sizing and thermal barriers, the vision and spandrel glazing selection tree the framing delivers, aluminum finishes, air and water penetration resistance, thermal transmittance and condensation resistance, acoustic performance, wind pressure and deflection criteria, thermal and seismic movement accommodation, wind-borne debris impact resistance, perimeter fire containment at the floor edge, anchorage and movement joints, perimeter air and water barrier continuity, fabrication, mockups, erection, and field water and air testing.

Steel-sheet hollow metal doors and frames for commercial, institutional, industrial, and government openings — flush, seamless, and embossed faces over honeycomb, polystyrene, polyurethane, temperature-rise, or acoustic cores; knocked-down, welded, and slip-on frames; standard through maximum-duty grades (ANSI/SDI A250.8 Levels 1-4); interior and exterior, fire-rated up to 3-hour, acoustic, galvanized, and galvannealed assemblies.

interior glass partition systems and borrowed lites in commercial office fit-outs, institutional buildings, and tenant improvements — full-height and partial-height framed aluminum, frameless structural-silicone-set, and clip/patch-fitting glass walls; fixed sidelites and clerestory/borrowed lites adjacent to interior doors and corridors; single-pane tempered, laminated, and insulating-glass-unit configurations in non-load-bearing interior framing, where the driver is daylighting, visual openness, and acoustic separation — not exterior weathering.

Opaque overhead coiling doors and coiling counter doors whose curtain of interlocking metal slats rolls onto a counterbalanced barrel above the opening, at service, dock, drive-through, parking, equipment-room, corridor, and counter openings in commercial, institutional, and industrial work. Covers non-insulated and insulated service doors, counter doors and counter shutters, and fire-rated coiling doors and counter shutters listed under NFPA 252 or UL 10B; design wind pressure, windborne-debris impact rating, thermal transmittance, and air leakage; fire-protection rating, release, governed closing, reset, and smoke and draft control listing; curtain slat construction, material, gauge, insulation, and vision; bottom bar, guides, brackets, barrel, counterbalance, and hood; weatherseals and locking; counter door sills and frames; push-up, chain hoist, crank, and motor operation with UL 325 entrapment protection, control mode, interfaces, enclosure type, and emergency manual operation; factory finishes; installation, anchorage, perimeter sealing, acceptance testing including the NFPA 80 drop test, warranty, and spare parts.

upward-coiling open-mesh curtain assemblies (rolling grilles, security grilles) for storefronts, shopping-mall closures, interior tenant separation, parking entries, and light-duty industrial openings where the closed assembly must remain visually open and ventilated. Covers non-rated and fire-rated, manual and motorized, standard and high-cycle models in galvanized steel, aluminum, and stainless steel.

Upward-acting sectional overhead doors whose horizontal panels (sections) hinge together and track horizontally beneath the ceiling when open, serving loading docks, drive-through service openings, parking garages, warehouses, and light-industrial buildings. Covers insulated (foamed polyurethane sandwich), non-insulated (ribbed or pan steel), and full-vision aluminum-and-glazing doors; panel material, gauge, thickness, and finish; vision lites and glazing; weatherseals and air-infiltration class; torsion and extension counterbalance and cycle-life rating; track and lift configuration selected by available headroom and sideroom; wind-load design pressure and reinforcement; manual chain-hoist and motor operation with UL 325 entrapment protection; installation, field testing including the safety-reverse test, and warranty.

Complete factory-assembled, single-manufacturer window units in any frame material (aluminum, vinyl, wood, clad-wood, fiberglass, composite) and any operating type (fixed, double-hung, single-hung, casement, awning, hopper, sliding, projected, tilt-turn) for new construction and replacement work in low-rise residential, mid-rise multifamily, and commercial buildings. Covers NAFS performance classification, thermal and structural ratings, glazing and frame selection, finish, hardware, egress, impact resistance, and installation per ASTM E2112.

Factory-built architectural wood door leaves specified as their own package, separate from the frame and the finish hardware, for interior and exterior swinging openings in commercial, institutional, educational, healthcare, hospitality, and multi-family residential work. Covers flush doors to ANSI/WDMA I.S.1A and stile-and-rail doors to ANSI/WDMA I.S.6A; performance duty level and appearance grade; hollow, particleboard, structural composite lumber, stave lumber, agrifiber, lead-lined, and listed mineral cores; wood veneer, high-pressure decorative laminate, and opaque faces; veneer species, cut, grade, and matching; edge construction; stile, rail, and panel construction; exterior-service construction; fire-protection and smoke-control listings for the leaf, positive-pressure edge seal category, lite and louver cutouts; sound-rated leaves; factory finishing, composite-wood emissions, and chain-of-custody certification; factory machining, blocking, and raceway for hardware; delivery, storage, installation clearances, field trimming, acceptance tolerances, warranty, and attic stock.

Interior architectural woodwork applied to the building's walls, ceilings, and openings rather than built as cabinets — standing and running trim (base, casing, chair rail, crown, picture mold, and other moldings); wood wall and ceiling paneling in flush, stile-and-rail, and raised-panel configurations; wood slat and linear plank systems, including acoustic slat assemblies; applied and ornamental woodwork; and the transparent or opaque finish that completes them. Covers the architectural woodwork quality grade, the species and cut of solid lumber and decorative veneer, face veneer grade, leaf and assembly matching and panel-to-panel sequencing, panel face and core construction, interior finish fire classification and fire-retardant treatment, composite-wood formaldehyde compliance, adhesives, finish system and finishing location, service humidity and wood moisture content, concealed blocking and hanging systems, joinery, and movement provisions.

The non-illuminated signs whose message, location, and tactile form are prescribed by the means-of-egress and accessibility provisions of the adopted building code, NFPA 101 where it is in force, and ICC A117.1, in new construction and alterations of commercial, institutional, assembly, educational, healthcare, hospitality, industrial, and multi-family residential buildings. Covers tactile exit signs with raised characters and Braille at exit doors, exit stair doors, exit passageway doors, and exit discharge doors; stairway identification signs and the tactile floor-level signs inside exit stairways, including roof-access and stair re-entry statements; area of refuge identification signs, the instruction signs at two-way communication stations, and directional signs to an accessible means of egress; the elevator emergency-use sign at each call station and the raised floor designations on hoistway jambs; occupant load postings and their holders; NO EXIT signs; the notice sign the code requires at a main exit door secured with a key-operated lock; the fabrication process, plate material, characters, Braille, contrast, and mounting of every raised-character sign in this set; mounting height and location; field verification; warranty; and spares.

Factory-fabricated, relocatable panel-and-frame partition systems for interior commercial, institutional, and industrial fit-outs where walls must be reconfigured without major demolition — solid opaque panels, full- and partial-height glazed panels, and combination assemblies with their framing, floor runners, head tracks, integrated door frames, utility pathways, and accessories. Typical in office tenant improvements, corporate interiors, healthcare clinics, education, and retail fit-outs where repeated reconfiguration or future subletting is the design intent.

Factory-engineered passenger and service elevators for new construction and full replacement, covering hydraulic elevators with holed, holeless and roped jacks and traction elevators with machine-room-less, overhead and basement machine arrangements. Covers drive and machine selection, the controller and group operation, door operators, entrances and door protection, the car enclosure and its finishes, hall and car signal fixtures, accessibility of the car and its fixtures, firefighters' emergency operation and its interface with the fire alarm system, operation on standby power and battery-powered rescue operation, elevator seismic provisions, the requirements the hoistway, pit, machine room and electrical service must meet for the equipment, acceptance inspection and testing, maintenance during the warranty period, and the diagnostic access the Owner keeps afterward. The equipment is governed by ASME A17.1/CSA B44 and inspected under ASME A17.2; rated load, rated speed, car size, number of stops and number of cars come from the elevator traffic study and the drawings and are deferred, never selected here.

Furnishing and installation of building-exterior and site signage on commercial, institutional, and mixed-use projects — ground-mounted monument signs (single- and double-faced), pylon and pole signs, channel-letter and dimensional-letter signs (illuminated and non-illuminated), cabinet and panel signs, post-and-panel wayfinding arrays, tenant directory signs, facade-mounted building-identification signs, and code-required exterior identification signs (ADA building IDs, accessible-route markers, exit-discharge signs). Covers structural and foundation integration, electrical service coordination, materials and finishes, UL listing, wind-load compliance, permit documentation, and ADA/IBC compliance for each sign type.

Exterior flagpoles for commercial, institutional, governmental, civic, campus, park, and sports-facility projects: freestanding ground-set, shoe-base, and hinged-base poles; wall-mounted vertical and outrigger poles; and roof- or canopy-mounted poles, in aluminum, fiberglass, steel, or stainless steel, as single poles or coordinated groups. Covers structural design under wind and flag load to ANSI/NAAMM FP 1001, shaft material and profile, external and internal halyard systems and their security, trucks and finials, finishes and corrosion exposure, the foundation and foundation tube, wall and roof mounting, grounding and lightning-protection provisions at the pole, raceway provisions for flag illumination, installation, and warranty.

Selecting and installing commercial foodservice equipment in commercial kitchens, cafeterias, commissaries, institutional dining, restaurants, and food-hall tenant improvements. Covers built-in and freestanding cooking equipment, hot-holding and warming units, warewashing systems, powered food-preparation equipment, point-of-use refrigeration (reach-in, under-counter, prep tables, blast chillers), ice machines, beverage and dispensing equipment, and custom stainless-steel fabrications, including utility rough-in coordination and NSF/UL/ETL listing requirements.

This is the coordinating umbrella standard for interior architectural woodwork on commercial, institutional, hospitality, healthcare, and civic fit-out projects where the millwork package combines multiple AWI-graded product types under a single millwork contract — custom shop-fabricated paneling, standing and running trim, specialty casework, freestanding built-ins, ornamental woodwork, display and library shelving, wainscot and wall-cladding systems, decorative columns, pilasters, and bespoke integrated assemblies (reception environments, boardroom paneling packages, liturgical woodwork, exhibit casework). Covers AWI Quality Certification Program (QCP) project certification, shop-drawing coordination across all woodwork types, acclimatization, and delivery sequencing for large-package contracts. Each product is governed by an AWI quality grade (Economy / Custom / Premium).

Laboratory-grade casework and the work surfaces, sinks, and service fittings mounted on it, for teaching, research, clinical, analytical, and industrial laboratories in new construction and renovation: fixed, suspended, mobile, and adaptable base, wall, and tall cabinets in painted steel, stainless steel, phenolic resin, polypropylene, wood, and plastic laminate graded under the SEFA 8 recommended practices; epoxy resin, phenolic resin, chemical-resistant laminate, stainless steel, polypropylene, soapstone, and ceramic work surfaces, curbs, and reagent shelving; laboratory sinks and cup sinks; SEFA 7 water, purified-water, gas, air, and vacuum fittings and the electrical service raceways carried on the casework; flammable liquid and corrosive storage cabinets, including the base cabinets fume hoods sit on; accessible laboratory stations; seismic anchorage; installation; warranty; and spare parts.

Specifying, selecting, and installing the full assembly of equipment at truck-height loading docks — dock levelers (mechanical, hydraulic, air-powered, vertical-storing, edge-of-dock), portable dock plates and boards, dock bumpers, dock seals and shelters, vehicle/trailer restraints, and the electrical interlock and dock-light system that ties them together. Applies to distribution centers, warehouses, cold-storage facilities, retail and institutional receiving docks, food and beverage plants, and industrial facilities, for both new dock-pit construction and retrofit at existing openings.

exterior overhead metal protective covers — entrance canopies, walkway covers, drive-through lane covers, loading-zone covers, and fuel/gas-station island canopies on commercial, institutional, industrial, and multi-family residential buildings. Covers pre-engineered and custom-fabricated systems with steel or aluminum framing, metal deck or panel roofing, integral or scuppered drainage, fascia, soffit liners, and anchorage, in cantilever, column-supported, wall-bracket, and suspended (cable/rod) configurations with powder-coat, anodized, PVDF, or galvanized finishes.

Factory-fabricated sheet-steel lockers and their doors, latching, locking, trim, interior equipment, and anchorage, in knocked-down or welded construction, for school corridors, athletic and team rooms, employee and industrial change rooms, public recreation, and day-use storage. Covers substrate selection and corrosion protection, component sheet thickness, tier and opening configuration, door ventilation, latching and locking including electronic locks, powder-coat finish performance, tops, bases and closure trim, accessible lockers under the ADA Standards and ICC A117.1, and floor, wall, and seismic anchorage.

top-hung manually or electrically operated movable wall systems used to subdivide assembly, educational, hospitality, and conference spaces into smaller rooms; includes individual-panel, paired-panel, continuously hinged accordion, and motorized vertical-fold systems with specified acoustic (STC) and fire-resistance ratings.

solid plastic lockers — high-density polyethylene (HDPE) and compact solid phenolic — for high-moisture, high-hygiene, or high-vandalism environments such as aquatic centers, natatoriums, pool and spa locker rooms, athletic and fitness facilities, country clubs, food-service staff areas, and healthcare locker rooms where steel would corrode or delaminate. Covers locker bodies, doors, frames, shelving, hardware, tier arrangements (single through six-tier and Z-tier), integrated and freestanding benches, and anchorage.

rigid grid raised access floor systems for data centers, computer rooms, command and control centers, electronics manufacturing, equipment rooms, and offices requiring an accessible underfloor plenum for cabling, power distribution, or underfloor air distribution (UFAD).

Interior and building-mounted architectural and code-required signage for commercial, institutional, and light-industrial buildings — tactile room-identification signs, directional and overhead wayfinding signs, regulatory and informational panel signs, dimensional letters and logos, code-required egress and accessibility signage (exit, stairway identification, floor-level, area-of-refuge), and both non-illuminated and electrically illuminated signs. Covers accessibility requirements for tactile characters and Braille, visual character legibility, contrast and finish, mounting height and location, substrate and copy methods, the sign and message schedule, and installation.

Specification, fabrication, and installation of solid surface (cast acrylic/polyester sheet) and engineered quartz (quartz aggregate with polymer binder) countertops for commercial and institutional horizontal work surfaces - restrooms, breakrooms, laboratories, reception desks, nurse stations, locker rooms, and casework tops across office, healthcare, education, hospitality, and light-industrial projects, including integral and undermount sinks, backsplashes, edge profiles, substrate, and anchorage.

Furnished and installed washroom accessories in commercial, institutional, educational, healthcare, hospitality, transit, recreation, and correctional toilet rooms, shower rooms, and locker rooms. Covers grab bars at water closets, showers, and bathtubs, including those that mount to a compartment panel; glass and stainless steel mirrors; paper towel dispensers and combination towel and waste units; electric hand dryers as a product, with their sound level, protrusion, and mounting; soap dispensers, wall-mounted and deck-mounted; sanitary napkin disposals and vendors; waste receptacles; toilet tissue and seat-cover dispensers; baby-changing stations; robe hooks, shelves, and custodial holders; shower curtain rods, curtains, and folding shower seats. Covers the stainless steel alloy, finish, and sheet thickness; surface, semi-recessed, and recessed mounting; grab bar section, surface, and anchorage; vandal-resistant construction, security fasteners, and keying; antimicrobial surface claims; recessed units in fire-resistance-rated walls; the hand-off of anchor patterns and mounting heights to the trades that furnish in-wall backing; and installation, field verification, warranty, and spare parts.

Factory-fabricated toilet compartments, urinal screens, and dressing screens for commercial, institutional, educational, healthcare, transit, assembly, and correctional restrooms. Covers panel material families including plastic-laminate-faced, solid plastic HDPE, solid phenolic core, powder-coated steel, and stainless steel; panel, door, and pilaster thickness; interior-finish fire performance; mounting styles including floor-anchored and overhead-braced, floor-to-ceiling, ceiling-hung, and floor-anchored without headrail; headrails, pilaster shoes, brackets, hinges, latches, coat hooks, and fasteners; compartment dimensions, panel height, floor clearance, and sightline treatment; and wheelchair accessible and ambulatory accessible compartments under the 2010 ADA Standards and ICC A117.1.

Factory-fabricated writing and pinning surfaces furnished as framed units in commercial, institutional, educational, healthcare, hospitality, and government buildings. Covers markerboards and chalkboards with porcelain-enamel steel, painted steel, tempered glass, high-pressure laminate, and melamine writing surfaces; tackboards with cork, vinyl, fabric, and fiber faces; combination units; enclosed bulletin board cabinets with hinged or sliding glazed doors, locks, header panels, and internal illumination; horizontal and vertical sliding panel units and modular rail-hung panel systems; mobile units on casters; display rails, marker trays, map hooks, and accessories; the frame and trim material and finish; the interior finish fire classification and emissions of the faces and cores; mounting, blocking hand-off, seismic anchorage, accessible reach and protrusion; and installation, field verification, warranty, and spare parts.

factory-fabricated, impact-resistant wall and corner protection applied to interior surfaces and edges to resist damage from wheeled traffic, equipment, and pedestrian impact — corner guards (surface-mounted and recessed), wall guards and crash rails, chair and rub rails, bumper rails, handrail wall guards, and rigid sheet wall protection panels — in healthcare, education, government, institutional, hospitality, transportation, and other high-traffic commercial interiors.

Interior window treatments installed for glare control, solar heat control, daylight management, privacy, and room darkening in commercial, institutional, and light-industrial buildings. Covers manual and motorized roller shades with solar screen, room-darkening, and blackout fabrics, dual-roller assemblies carrying two shades on one mounting, and draperies on track systems. Addresses fabric composition, openness factor and solar optical properties, fire performance under NFPA 701 and ASTM E84, low-emitting certification, lightfastness, fungal and antimicrobial performance, roller tube and bracket hardware, fascia and pocket concealment, hembars, manual clutch operation and the cord retention provisions of ANSI/WCMA A100.1, motorized operation and its power, listing, control, and integration, mounting condition and light gap, perimeter light-control channels, accessible operation, field testing, installation, warranty, and spare parts.

modular freestanding or wall-anchored steel wire mesh enclosures and space-dividing systems, fabricated from welded or woven mesh panels framed in steel angle or tube and bolted to steel posts. Covers tenant storage cages, tool cribs, equipment and electrical-room barriers, data-center and server cages, evidence and weapons storage, and back-of-house secure storage in warehouses, plants, distribution centers, correctional and government facilities — normal- and heavy-duty, partial- and full-height, with personnel swing doors, sliding doors, pass-throughs, and locking hardware.

Factory-fabricated architectural casework graded under the Architectural Woodwork Standards for commercial, institutional, educational, and healthcare buildings: plastic-laminate, thermally fused laminate, wood-veneer, and solid-wood base, wall, and tall cabinets; reception desks, nurse stations, service and transaction counters, and built-in millwork cabinetry; the plastic-laminate countertops and backsplashes that top them; and the cabinet hardware that operates them. Covers the quality grade, installation grade, and structural duty level; construction type and door and drawer-front interface style; core materials by moisture exposure; exposed and semi-exposed surface materials and laminate grades; veneer species, cut, and matching; edge treatment; plastic-laminate countertop construction; hinges, drawer slides, pulls, locks, and shelf supports; factory finishing; interior finish fire classification; composite-wood formaldehyde and adhesive emissions; accessible stations; blocking, anchorage, and seismic restraint; installation; warranty; and spare parts.

Programmable logic controllers (PLCs) and programmable automation controllers (PACs) serving as the real-time logic solver for industrial, process, and water/wastewater (WTP/WWTP) control systems. Covers processor (CPU) selection and memory, the I/O subsystem (discrete and analog input/output modules and signal conditioning), remote and distributed I/O, redundancy and high-availability architectures (hot-standby CPUs, redundant power and network), IEC 61131-3 programming languages, scan-time and performance requirements, power supplies, time synchronization, environmental and hazardous-area ratings, and safety-rated controllers for safety instrumented systems where process safety applies. Applies to controllers mounted in industrial control panels and field enclosures across treatment plants, pump and lift stations, pumping and conveyance systems, and process manufacturing.

Supervisory control and data acquisition (SCADA) software and operator human-machine interface (HMI) for industrial, process, and water/wastewater (WTP/WWTP) facilities. Covers the supervisory layer that sits above the field controllers: client/server and standalone architectures, redundant (hot-standby) servers with automatic failover, the process data historian and trending, alarm management per ANSI/ISA-18.2, high-performance HMI graphics per ANSI/ISA-101.01 (situational-awareness displays, grayscale background discipline, color reserved for abnormal conditions), reporting, role-based user access and cybersecurity per ISA/IEC 62443, time synchronization, polling and communications to controllers, the software licensing model, and redundant local and remote operator workstations. Applicable to new SCADA platforms and to major migrations or expansions of an existing platform.

Online, continuous-reading process analyzers that measure the chemistry and quality of a liquid process stream in water treatment, wastewater treatment, and industrial process facilities: pH and ORP, turbidity, free and total chlorine and monochloramine, dissolved oxygen, conductivity, ammonia, nitrate, total organic carbon and UV absorbance, suspended solids and sludge blanket, streaming current, and dissolved ozone. Covers the measurement technology chosen for each parameter, the measuring range, the sensor and the analyzer or transmitter, insertion, submersion, and flow-through installation, sample conditioning, sample lines and sample panels, reagent handling, automatic sensor cleaning, temperature compensation, enclosure and hazardous-location ratings, analog and digital output, calibration and verification against the laboratory reference method, and the method requirements that apply where an analyzer reports under a drinking-water or discharge permit.

The automated final control element of a process control loop — modulating (throttling) control valves and the actuators and positioners that drive them — for industrial, process, and water/wastewater (WTP/WWTP) facilities. Covers globe, segmented-ball, eccentric-plug, and butterfly valves used for modulating control; pneumatic spring-diaphragm and piston actuators and electric actuators sized for continuous modulating duty; analog, HART, and digital/fieldbus valve positioners with diagnostics; and accessories (I/P transducers, solenoid valves, limit switches, position transmitters, volume boosters). Addresses valve sizing and flow-coefficient (Cv) selection per ANSI/ISA-75.01.01 / IEC 60534-2-1, inherent flow characteristic (linear, equal-percentage, quick-open), rangeability, choked flow, cavitation and flashing with anti-cavitation trim selection, predicted noise, fail-safe action (fail-open, fail-closed, fail-last), seat leakage class per ANSI/FCI 70-2, materials and trim, and stroke/calibration. Also covers electric (motorized) actuators on isolation valves (MOVs) where the actuator is the controls interface — open/close or modulate with position feedback to SCADA — because the actuator is I&C scope even when the valve body is an isolation valve.

Flow measurement instrumentation for water/wastewater (WTP/WWTP) and general industrial and process service. Covers the selection, specification, materials, installation, signal output, and calibration of the major closed-pipe and open-channel flow technologies: magnetic (electromagnetic) meters, ultrasonic transit-time and Doppler meters (clamp-on and inline), differential-pressure flow (orifice plate, venturi, and flow nozzle with a paired differential-pressure transmitter), Coriolis mass meters, vortex shedding meters, and open-channel flumes and weirs measured with a secondary level sensor. Addresses application-based technology selection (clean versus dirty or solids-laden fluid, conductivity, accuracy, turndown), straight-run upstream/downstream piping requirements, liner and electrode materials, full-pipe verification, hazardous-area ratings, signal output (4-20 mA/HART, pulse, and digital network), and totalizer and calibration requirements.

The "last-mile" mechanical infrastructure that connects any field process instrument (pressure, differential-pressure, flow, and level) to a live process — primary process connections (taps, root valves, flanged connections at the pipe or vessel), instrument isolation manifolds (2-valve block-and-bleed, 3-valve, and 5-valve DP manifolds), impulse tubing and piping runs from the root valve to the instrument, tube and compression fittings, supports and clamps, condensate and seal pots, purge connections, heat-tracing provisions, and the blowdown/vent/drain valves on those lines. Applies across industrial process facilities, water and wastewater treatment plants, refineries, chemical plants, fossil-fuel power plants, and heavy industrial projects, and is the correct vehicle whenever a project needs an instrument piping/tubing specification separate from both the process piping spec and the instrument-selection spec.

Field-mounted level instrumentation for water and wastewater treatment plants (WTP/WWTP), industrial process facilities, and mechanical/plumbing utility service. Covers continuous-level transmitters and point-level switches in tanks, wet wells, clarifiers, sumps, chemical day tanks, bulk storage vessels, and filter beds — including non-contact free-space radar (FMCW and pulse), guided-wave radar (GWR/TDR), ultrasonic, hydrostatic and differential-pressure level, magnetostrictive float, displacer, float-and-cable, capacitance, and vibrating-fork switches. Addresses technology selection by fluid dielectric and vessel geometry, probe and antenna styles, blocking distance, wetted materials and process connections, SIL-rated overfill and high-high functions, signal output (4-20 mA/HART, FOUNDATION Fieldbus, Profibus PA), hazardous-area certification, local indication, calibration, and functional verification. Goes deeper than Process Instrumentation on level-specific technology decisions and installation.

Instrument-tagged pressure, vacuum, and differential pressure measurement points on industrial, process, power, and water and wastewater projects: the pressure transmitter (gauge, absolute, differential, and the pressure side of a multivariable transmitter), its sensing element and isolating diaphragm, its process connection, its output signal, and its housing; diaphragm seals and capillaries; the local pressure gauge with its snubber and siphon; the pressure switch; hazardous-location protection; calibration, installation, and acceptance. Applies to every point that carries a tag in the project instrument index and is read by a process controller or designated for local indication or switching, including pressure points on central plant and plant utility piping that are not building automation points.

Field-mounted measurement instruments and transmitters for the core process variables pressure, level, and temperature, and for general-purpose process measurement, on industrial, process, and water/wastewater (WTP/WWTP) projects. Covers gauge, absolute, and differential pressure transmitters; hydrostatic, radar (non-contact and guided-wave), ultrasonic, and float level instruments; RTD and thermocouple temperature elements with thermowells and transmitters; signal and output types (4-20 mA with HART, and digital fieldbus options); accuracy and turndown; wetted materials and process connections; ambient and hazardous-area (Class/Division and Zone, intrinsic safety) ratings; local indication; and instrument tagging and loop identification per ANSI/ISA-5.1. Reference loop integration to Control Systems Integration and signal wiring to Instrumentation And Control Cable.

Instrument-tagged temperature measurement points on industrial, process, power, and water and wastewater projects: the sensing element (platinum RTD, thermocouple, or thermistor), its insert and sheath, the thermowell, the connection head, the temperature transmitter and its output signal, thermocouple extension wire, the local dial thermometer, hazardous-location protection, calibration, installation, and acceptance. Applies to every point that carries a tag in the project instrument index and is read by a process controller, including the temperature element of a multivariable transmitter and temperature elements on storage tanks and plant piping that are not building automation points.

Factory-fabricated industrial control panels and enclosures that house instrumentation and controls (I&C) equipment for industrial, process, and water/wastewater (WTP/WWTP) facilities. Covers UL 508A listed control panels and enclosures housing programmable logic controllers, remote I/O, control relays, power supplies, network switches, and operator interface devices, rated 1000V and below. Addresses enclosure type rating selection (UL/NEMA Type 1, 3R, 4, 4X, 12), short-circuit current rating (SCCR) determination per UL 508A Supplement SB and NEC Article 409, enclosure sizing and component layout, internal power distribution and control power transformers, power-versus-signal wiring segregation, wire and terminal-block identification, thermal management, grounding and bonding, nameplates, and arc-flash labeling.

The cable between the field instruments, final control elements, local control stations and motor starters of a plant control system and the control panels, remote I/O and controller cabinets that read and command them, on water, wastewater and industrial process projects: single twisted shielded pair and triad cable for 4 to 20 mA, pulse and RTD circuits; multi-pair and multi-triad homerun cable; thermocouple extension cable; multiconductor cable for the 120 V AC and 24 V DC discrete control and status circuits between panels and field devices; FOUNDATION Fieldbus H1, PROFIBUS PA and RS-485 serial cable; and the cable of intrinsically safe circuits. Covers listing and type (TC, PLTC, ITC, CL2 and CL3), the 300 V and 600 V rating and what each may share a raceway or tray with, conductors, insulation, shields, armor and jacket, pair identification, the shield grounding rule, separation from power circuits, pulling, splices and terminations, wire markers and cable tags, and the continuity, insulation resistance, shield isolation and fieldbus segment tests that put a cable into service. Read with Common Work Results Process.

The operational technology (OT) communications network that connects programmable controllers, remote and distributed I/O, networked field instruments, and the supervisory SCADA and HMI layer in industrial, process, and water and wastewater facilities. Covers the Purdue reference model and the boundary between the OT network and the enterprise network, security zones and conduits under ISA/IEC 62443, industrial Ethernet and serial protocol selection, transmission media by segment class, managed switches and conduit enforcement devices, redundant topologies and recovery time, traffic prioritization, time synchronization, wide-area telemetry to remote sites, the device hardening, account, patch, logging, and backup baseline, and the cable, functional, and security acceptance tests that put the network into service. Applies to new networks, full replacements, and substantial expansions of an existing OT network.

The integration, configuration, and acceptance-testing scope performed by the control system integrator on an industrial, process, or water and wastewater treatment project, whether the plant is new, expanded, or migrated to a replacement control platform. Covers the division of responsibility between the integrator, the electrical trade, the mechanical and process trade, and the packaged-equipment vendors; the authorship and content of the control narratives; tag and point naming per ANSI/ISA-5.1; the controlled I/O list and the loop diagrams per ANSI/ISA-5.4; the software configuration management workflow from first baseline through as-built; the integration of packaged-skid controls into the plant SCADA; the integrator's secure delivery of the configured system; the integration-seam verification of safety instrumented functions; the factory acceptance test, site acceptance test, site integration test, loop checks, performance verification test, and endurance test under ANSI/ISA-62381 and ANSI/ISA-62382; the commissioning sequence; training on the narratives and the maintenance of the delivered configuration; as-built documentation; the integration warranty; and the turnover of source configuration.

The umbrella standard for process equipment in water treatment plants, wastewater treatment plants, pump stations, and industrial process facilities, read together with every process equipment, process piping, and process valve standard on a project. States once the equipment numbering and nameplate basis, the process equipment data sheet and submittal content, manufacturer qualification and unit responsibility, site and service conditions, equipment supports and anchorage responsibility, vibration and airborne noise acceptance, the motor, drive, and control interface, guards, lubrication and first fills, factory testing and witness policy, manufacturer's field services by visit type, startup, field performance and acceptance testing, training, delivery and storage, warranty, and spare parts and special tools, so the equipment standards inherit these obligations rather than restate them. Carries no product requirements of its own.

Galvanic and impressed-current cathodic protection of buried and submerged metallic structures inside the fence of a water treatment plant, a wastewater treatment plant, a pump station, or an industrial process facility, read together with Common Work Results Process: buried ductile iron and steel yard piping with its valves and fittings, the interior submerged surfaces and the bottom exterior of steel water storage tanks, steel well casings, and the buried steel structures and sheet pile the drawings assign to the system. Covers the corrosivity survey, the design responsibility, the criteria of protection, galvanic anodes and their backfill, rectifiers, impressed-current anodes and anode beds, test stations, permanent reference electrodes and coupons, the joint bonds that make a gasketed line one conductor, electrical isolation and its test, the decoupling device between a protected structure and the grounding electrode system, interference and stray current mitigation, commissioning from the native survey through the final potential survey, the commissioning report, and the surveys that follow.

Ductile iron pipe, fittings, joints, linings, and exterior coatings for the process piping of water treatment plants, wastewater treatment plants, pump stations, and industrial process facilities, inside the plant fence: piping exposed in galleries, buildings, vaults, and wet wells, piping submerged in tanks and channels, and buried yard piping between plant structures. Covers pipe per AWWA C151 by pressure class or special thickness class, flanged pipe per AWWA C115, full-body fittings per AWWA C110 and compact fittings per AWWA C153, flanged, push-on, mechanical, restrained, and grooved joints per AWWA C606, thrust restraint, flange gaskets and bolting by service and exposure, interior lining selected per service, exterior coating by exposure including polyethylene encasement per AWWA C105, outlets and taps, dismantling joints and sleeve couplings, wall pipes through water-retaining walls, the hydrostatic and leakage test per AWWA C600, and disinfection of finished-water lines per AWWA C651.

Thermoplastic and fiberglass-reinforced plastic process and chemical piping inside the fence of a water, wastewater, or industrial treatment plant: PVC, CPVC, polyethylene, PVDF, polypropylene, and FRP pipe, fittings, flanges, and joints for process water, chemical feed, sludge, reclaimed and non-potable water, drain, and plant potable water service, exposed in galleries, chemical rooms, and buildings and buried as yard piping between plant structures. Covers material selection by chemical and temperature, solvent-cement, heat-fusion, adhesive-bonded, flanged, threaded, and gasketed joints, transitions to metallic piping, double-containment piping with leak detection, support and thermal-expansion provisions particular to plastics, ultraviolet and freeze protection, buried embedment, thrust restraint and tracer wire, the hydrostatic test that proves the installed piping, and AWWA C651 disinfection of plant potable lines.

Carbon steel and stainless steel process piping inside the fence of a water, wastewater, or industrial process plant and its pump stations: raw, settled, finished, service, and plant water; blower discharge, aeration, and channel air headers; sludge, scum, and digested solids; and the chemical services that steel or stainless steel can carry. Covers the pipe and the fabricated steel pipe of AWWA C200, the stainless alloy and wall selection, fittings and flanges, welded, threaded, grooved, flanged, and coupled joints, dismantling joints and flanged coupling adapters, wall pipes and penetrations, linings and shop coatings, pickling and passivation of stainless welds, the temperature-driven provisions of hot air headers, installation exposed in galleries, buildings, and vaults and buried as yard piping between plant structures, the pressure, leakage, and weld examination that prove the assembly, and the disinfection of finished-water lines.

Air release valves, air/vacuum valves, and combination air valves under AWWA C512 for water, wastewater, reclaimed water, and sludge pipelines in water and wastewater treatment plants, pump stations, and industrial process plants, installed exposed at the high points of gallery and building piping and in vaults on buried yard piping, together with the valve on a site water main or sewage force main where the drawings designate it to be furnished under this standard. Read with Common Work Results Process, which carries the submittal register, the factory and witnessed test policy, manufacturer's field services, nameplates, spare parts basis, anchorage, and the other provisions every process valve inherits. Covers the three valve types and the wastewater pattern with its backflushing accessories, the pressure class, the sizing of the large orifice from the filling and draining rates and of the small orifice from the working pressure, body, float, seat, and trim materials, inlet and outlet connections, slow-closing and surge-check devices, the isolation valve beneath each air valve, AWWA C550 coating, shop and field tests, and installation exposed, in vaults, with the vent to atmosphere, and with freeze protection.

Rubber-seated butterfly valves for isolation and non-modulating throttling in water, wastewater, reclaimed water, and industrial process piping, exposed in plants, galleries, and vaults or buried in yard piping, 3 in. through 72 in. under AWWA C504 and 78 in. and larger under AWWA C516, with MSS SP-67 and API 609 valves where the size or the service falls outside the AWWA standards. Covers the valve body and end connections, pressure class, seat, disc, seating surfaces, shaft, bearings and shaft seals, the manual operator, the mounting interface and torque data a power actuator is sized from, buried-service provisions including the valve box and extension stem, AWWA C550 coatings, proof-of-design and production testing, installation, and field testing.

Resilient-seated eccentric plug valves under AWWA C517, 3 in. through 72 in., used for isolation and fixed-position throttling of raw water, wastewater, sludge, scum, grit, and other solids-bearing liquids in water and wastewater treatment plants, pump and lift stations, and industrial process plants, installed exposed in galleries and valve vaults or buried on site force mains. Covers the body, plug, seat, shaft, bearings and seals, port area, pressure rating and shutoff direction, end connections and bolting, the AWWA C550 lining and coating, the manual operator (lever, worm gear, handwheel, chainwheel, and the 2 in. operating nut), the mounting interface and torque data for a power actuator, buried-service provisions including the extension stem and valve box, shop testing, installation orientation for solids service, field testing, warranty, and spare parts.

Knife gate valves under MSS SP-81 and AWWA C520, 2 in. through 96 in., for isolation of sludge, scum, grit, screenings, dewatered cake, slurry, and other solids-bearing or dry-solids service in water treatment plants, wastewater treatment plants, pump stations, and industrial process facilities, in pipelines and on the chutes, hoppers, and bin outlets of screening, grit, thickening, and dewatering equipment, exposed in galleries, buildings, and vaults or, where the drawings designate it, buried, read together with Common Work Results Process. Covers the bonnetless and the bonneted valve, the resilient perimeter seat and the metal seat, unidirectional and bidirectional shutoff, the standard, full round, square, and rectangular port, the wafer, lugged, and flanged body with its flange drilling and pressure rating, the body, gate, stem, yoke, and bolting materials, the beveled gate, the seat and seal elastomers, the packing and gland, the chest flush ports, deflection cone, splash guard, liner, and gate scraper of slurry and dry solids service, the rising stem, stem protector, position indicator, and lockout, the manual operator furnished with the valve, the mounting interface and thrust data a power actuator is sized from, AWWA C550 coating on ferrous bodies, the valve box and extension stem of a buried valve, proof-of-design and production tests, installation orientation, and field testing.

Check valves individually specified on the pump discharges and process piping of water treatment plants, wastewater treatment plants, pump stations, and industrial process facilities, in raw, settled, finished, reclaimed, and plant water, wastewater, sludge, scum, grit, and industrial process service, exposed in galleries, buildings, and vaults or buried in yard piping. Covers swing check valves under AWWA C508 with their lever and weight, lever and spring, air cushion, and oil dashpot closure provisions; resilient-hinge rubber flapper check valves; tilting-disc check valves; ball check valves for sludge and grit; silent spring-loaded center-guided check valves under MSS SP-125 and nozzle check valves; dual-disc wafer check valves under AWWA C518 and API 594; foot valves for suction-lift pumps; rubber duckbill check valves at outfalls and overflows; the closure response the Engineer of Record's surge analysis requires of each pump discharge valve and the types that deliver it; body, disc, seat, and hinge materials; pressure rating and end connections; position indication and limit switches; the backflow actuator; AWWA C550 coatings; vault and buried installation; shop testing; installation orientation; and the field closure test on each pump.

Gate valves furnished for isolation of water, wastewater, reclaimed water, and industrial process lines inside the fence of a water treatment plant, a wastewater treatment plant, a pump station, or an industrial process facility, exposed in galleries, buildings, and vaults or buried in yard piping, read together with Common Work Results Process. Covers the resilient-seated valve under AWWA C509 and AWWA C515, the metal-seated double-disc valve under AWWA C500 where a metal seat is still specified, and the cast iron gate valve under MSS SP-70 for process lines outside the AWWA standards; the body, bonnet, and bolting, the encapsulated wedge and its elastomer, the stem, stem nut, and stem seals, non-rising and outside screw and yoke stems, end connections and flange drilling, the rated working pressure, the direction of opening, the manual operator furnished with the valve, gear operators and bypass valves on large sizes, tapping valves and tapping sleeves as a conditional article, the mounting interface and thrust data a power actuator is sized from, the valve box and extension stem of a buried valve, AWWA C550 coating, proof-of-design and production tests, installation orientation, and field testing. A gate valve on a site water main outside the plant fence is furnished under Water Distribution Piping or Site Utilities unless the drawings designate this standard for it.

Power actuators and separately furnished manual operators for isolation valves and slide gates in water, wastewater, reclaimed water, and industrial process plants and their pump stations, read with Common Work Results Process. Covers electric motor actuators under AWWA C542, multi-turn and quarter-turn, for open-close, inching, and modulating-capable duty under supervisory control, with their integral reversing starters, local controls, torque and position sensing, open, closed, and position signals, and the hardwired or network interface to the plant control system; pneumatic and hydraulic cylinder and vane actuators under AWWA C541 with their solenoid valves, limit switches, speed controls, fail-safe means, and the air or hydraulic supply connection; and the floor stands, bench stands, extension stems, stem guides, bevel gear boxes, universal joints, and chainwheels that operate an exposed valve or a gate from an operating floor above it. Addresses actuator selection and duty, torque and thrust sizing from the valve or gate manufacturer's data, the enclosure and submergence rating, the mounting interface and the party that mounts the actuator, factory and field tests, and the record of limit and torque settings.

Slide gates, weir gates, flap gates, and stop logs on the walls and in the channels of water, wastewater, reclaimed water, and industrial process structures, including fabricated stainless steel slide gates under AWWA C561, fabricated aluminum under AWWA C562, fabricated composite under AWWA C563, cast iron under AWWA C560, open-channel fabricated-metal slide and weir gates under AWWA C513, cast iron and fabricated flap gates at outfalls and backflow points, and aluminum, fiberglass, and stainless steel stop logs with their guides, lifting devices, and storage racks. Covers the gate schedule interface, the seating and unseating design heads and the leakage allowance, the frame, slide, guides, seats, and seals, the invert configuration, the stem, stem guides, stem cover, and the manual lift on a self-contained gate, the thrust and the mounting interface a power actuator or floor stand is furnished to, the wall thimble, the anchor bolts, the tolerance the concrete must meet, finishes, shop assembly and tests, installation, and the field leakage and operation tests.

Horizontal rotodynamic pumps for clean and raw water, finished water, service and seal water, plant washwater, and clean process transfer in water treatment plants, wastewater treatment plants, pump stations, and industrial process facilities, read together with Common Work Results Process. Covers end-suction frame-mounted pumps, including ASME B73.1 chemical process pumps, end-suction close-coupled pumps, axially split-case double-suction pumps, and self-priming centrifugal pumps for clean liquids. Addresses the hydraulic selection against the pump schedule, the operating region, NPSH margin and suction energy, the casing, impeller, wear rings, shaft, and bearings, packed and mechanical shaft sealing with the flush plan, the baseplate, coupling and guard, the motor interface, shop coating, the factory hydrostatic, performance, and NPSH tests under ANSI/HI 14.6, installation, alignment, field testing, the seal warranty, and spare parts.

Positive displacement pumps for the sludge, scum, grit slurry, thickened and dewatered solids, water treatment residuals, septage, grease, and polymer solution services of water treatment plants, wastewater treatment plants, and industrial process facilities, read with Common Work Results Process: progressive cavity, rotary lobe, plunger and piston, peristaltic hose, and air-operated double-diaphragm pumps. Covers the pump end and its wetted materials, the stator and rotor, the lobes and wear plates, the plungers and ball checks, the hose and its lubricant, the diaphragms and air valve, shaft sealing, dry-run protection, the gear reducer, coupling, belt, and speed control that drive the pump, the motor features the pump requires, the discharge relief device and high-pressure shutdown every positive displacement pump requires, the suction and discharge connections, flushing and cleanout provisions, the cake feed hopper where the pump is fed dewatered solids, the baseplate, the factory performance test under ANSI/HI 3.6, 6.6, or 10.6, field testing, shop coating, storage of elastomer parts, warranty of wear parts, and spare parts.

Individually specified solids-handling wastewater pumps in water and wastewater treatment plants, plant influent pump stations built in a water-retaining structure, and large collection-system pump stations, read together with Common Work Results Process, which carries the submittal register, the factory and witnessed test policy, manufacturer's field services, nameplates, spare parts basis, anchorage, and vibration and noise acceptance for every process equipment standard. Covers the pump in every arrangement the service uses: submersible in a wet well on guide rails with a discharge elbow, dry-pit submersible with an immersible motor, horizontal and vertical dry-pit solids-handling pumps with a conventional motor, and self-priming solids-handling pumps at grade, for raw sewage, primary and secondary effluent, return and waste activated sludge, plant drain, and stormwater and combined flow inside a plant. Addresses the hydraulic selection against the pump schedule, spherical solids passage, non-clog channel, vortex, screw-centrifugal, and chopper impellers, the wetted materials for grit and corrosive service, wear rings and their adjustment, tandem mechanical seals and seal leak detection, the submersible motor with its cooling, sensors, cable, and hazardous-location listing, the guide rail system, discharge elbow, and lifting chain, dry-pit and self-priming mounting, speed control interface, factory performance testing under ANSI/HI 11.6 or ANSI/HI 14.6, the field drawdown test, shop coating, warranty, and spare parts.

Line-shaft vertical turbine pumps and submersible well pumps that lift raw water from an intake, a wet well, or a well, pump finished water from a clearwell to high service, or boost a pressurized line from a can or barrel, in water treatment plants, raw water intakes, well fields, booster stations, and industrial process plants, read with Common Work Results Process. Covers the four arrangements, wet-pit line-shaft turbine, can or barrel-mounted line-shaft turbine, deep-well line-shaft turbine, and submersible well pump with a submersible motor; the bowl assembly with its stages, impellers, bearings, wear rings, and strainer; the column, line shaft, shaft bearings, and the open or enclosed lubrication that decides them; the discharge head, its stuffing box or mechanical seal, and pre-lubrication; the suction can; the submersible motor, its cable, splice, and column check valve; the vertical hollow-shaft or solid-shaft motor features and the critical speed and reed frequency checks; the manufacturer's review of the intake against ANSI/HI 9.8; the factory performance, NPSH, and hydrostatic tests; field testing; the shop coating; and spare parts.

Water storage tanks furnished as a product for a water treatment plant, a pump station, a well field, or a distribution system, holding raw, settled, finished, reclaimed, or plant utility water, read with Common Work Results Process: the welded carbon steel ground storage reservoir, standpipe, and elevated tank under AWWA D100, the composite elevated tank with a concrete pedestal under AWWA D107, the factory-coated bolted steel tank under AWWA D103, the wire- and strand-wound circular prestressed concrete tank under AWWA D110, and the tendon-prestressed concrete tank under AWWA D115. Covers the construction type, the roof, the structural design basis and the delegated design of the shell, roof, and anchorage, the foundation as a design interface, the inlet, outlet, overflow, drain, manways, hatches, vents, ladders, fall protection, mixing, level indication, and the fittings that serve cathodic protection and instruments, the inside and outside coating systems under AWWA D102 with their preparation, holdback, thickness, holiday testing, and drinking water certification, the bolted tank factory coating and its repair, the prestressed tank cover coat and roof treatment, weld inspection, the hydrostatic test and its leakage criterion, disinfection under AWWA C652 with bacteriological clearance, delivery, warranty with the first-anniversary inspection, and spare parts. A fire protection water tank built to AWWA D100 is specified here where the drawings assign it.