NOTE This standard is the umbrella section for all hot-rolled structural steel work and establishes the administrative, qualification, and quality-assurance requirements that every other hot-rolled structural steel section relies on. (1.1)

NOTE This section intentionally contains no unique material, member-selection, or installation content of its own. (1.2)

NOTE Its purpose is to set the common framework once — fabricator and erector qualification, the shared submittal package, material traceability, delivery and storage of steel, coordination among the fabricator, erector, and Contractor, and the special-inspection and non-conforming-work processes — so that the member-specific and connection-specific sections need not restate it. (1.3)

NOTE Members, member coatings, camber, and erection sequence are specified in Structural Steel Framing; bolted and welded connection design, pretensioning, faying-surface preparation, and connection nondestructive examination are specified in Structural Steel Connections; steel deck attachment is specified in Steel Deck. (1.4)

NOTE Anchor rods, base plates, and their concrete embedment are specified in Cast In Place Concrete, Concrete Reinforcement, and Structural Steel Anchor Bolts; the advance-bill package administered here coordinates those items but does not design them. (1.5)

NOTE The project-wide statement of special inspections and the structural testing program are specified in Special Inspections And Testing; this section addresses only the steel-specific inspection items within that program. (1.6)

NOTE Where this section and a member- or connection-specific section both address a requirement, the more specific section governs the technical content and this section governs the administrative process. (1.7)

NOTE ANSI/AISC 303-22 establishes the trade-practice framework — shop and erection drawing responsibility, fabrication and erection tolerances, and the owner-fabricator-erector contractual relationship — that the rest of this section implements administratively. (2.4)

NOTE The Contractor shall submit all items required by this section through the fabricator and erector of record, consolidated so the Engineer of Record reviews a single coordinated package for each submittal category. (3.1)

NOTE Review of shop drawings by the Engineer of Record shall not relieve the fabricator of responsibility for dimensional accuracy, fit, or quantity. (3.2.7)

NOTE Lead times shorter than six weeks are appropriate only for small, repetitive, or fast-track projects; complex geometry and seismic-force-resisting systems typically require eight to ten weeks to allow connection design coordination. (3.2.8)

NOTE Lot certification alone may be insufficient where the project includes seismic demand-critical members; specify heat-number traceability in that case rather than relying on the default. (3.3.5)

NOTE The quality-assurance program for structural steel implements ANSI/AISC 360 Chapter N and IBC Chapter 17, dividing responsibility between the fabricator's and erector's quality control (QC) and the independent quality assurance (QA) provided by special inspection. (4.1)

NOTE Requiring a certification category higher than the structure demands can sole-source the work or eliminate bid competition in smaller markets; the Standard category suits routine gravity framing, and Complex is reserved for seismic demand-critical or fracture-critical work. (4.2.3)

NOTE IBC Chapter 17 requires the Owner to retain the special inspection agency in most jurisdictions; contractor retention creates a conflict of interest and is non-compliant where the code requires owner retention. (4.4.3)

NOTE Omitting the AC172 exception clause, or invoking it without coordinating with the Authority Having Jurisdiction, can cause the Owner to pay for redundant inspection or, conversely, to receive less inspection than the code requires. (4.4.7)

NOTE Default material grades for hot-rolled structural steel are established below; these reflect the most common selections and shall apply unless the structural drawings specify otherwise. (5.1)

NOTE Specifying a CVN test temperature colder than the application requires, or omitting the ASTM A673 frequency and lot size, generates avoidable RFIs and mill surcharges; set the temperature and frequency deliberately rather than copying a colder value from another project. (5.5.4)

NOTE Connections may be designed by the fabricator's engineer from forces shown by the Engineer of Record (delegated design), or detailed completely by the Engineer of Record; the responsibility model shall be established before bidding. (6.1)

NOTE Full Engineer-of-Record connection design is typically reserved for seismic moment frames and other critical connections; delegated design is the common model for standard gravity and braced-frame connections. The specification shall state explicitly whether the delegated connection design requires a licensed engineer's seal in the jurisdiction and who serves as the engineer of record for the connection design, so that the responsibility boundary is not left to an RFI. Detailed connection design rules, bolting methods, and weld acceptance criteria are specified in Structural Steel Connections; this section governs only the responsibility model and the submittal of the resulting calculations. (6.5)

NOTE When the advance-bill package and the civil or structural anchor-rod setting drawing are issued by different parties, bolt patterns can be set from the wrong document; reconcile the two before the pour. (7.2.3)

NOTE Advancing foundations before the advance-bill package is approved risks anchor-rod setting errors that are expensive and schedule-critical to correct after concrete has cured. (7.2.4)

NOTE Post-installed and adhesive anchoring of base plates, where used in lieu of cast-in anchor rods, is specified in Epoxy Grouting And Anchoring. (7.3.6)

NOTE Mill tolerances of ASTM A6 (as-rolled dimensional variation) and erection tolerances of ANSI/AISC 303 (as-erected positional deviation) are distinct and additive; both shall be satisfied independently. (7.4.1)

NOTE As-rolled member camber and straightness shall be within the limits of ASTM A6/A6M — camber ±3/8 in for members under 50 ft, and sweep within 1/8 in per 10 ft of length. (7.4.4)

NOTE Confusing mill tolerance with erection tolerance leads to rejecting members that are within both limits when measured separately; evaluate each against its own standard. (7.4.5)

NOTE Inadequate dunnage and uncontrolled outdoor storage are common causes of distortion, surface corrosion, and contaminated faying surfaces that generate rework before a single connection is made. (8.7)

NOTE A non-conformance is any material, fabrication, or erection condition that does not meet the contract documents or the referenced standards; the disposition process shall be established before fabrication begins so that the first out-of-tolerance piece does not trigger an undefined dispute. (9.1)

NOTE Leaving the corrective-action protocol undefined until a non-conforming piece arrives guarantees a contentious RFI at the worst time; defining the disposition path in advance keeps the schedule moving. (9.7)

NOTE Shop-applied protective coatings, where provided, shall be warranted under the coating provisions of Structural Steel Framing rather than under this section. (10.2)