SynC · Topic
These are the standards in the SynC Standards library that cover Underground. Each one is a complete, plain-language specification: the scope it applies to, the requirements that govern it, and a structured equipment datasheet listing the values a project has to decide — ratings, materials, setpoints, and the standards each is verified against. All of it is free to read without an account and published under CC BY-SA 4.0.
A standard usually carries several topics, so most of the entries below also appear under neighbouring subjects. The topics each one carries are listed on its own page.
Underground automatic landscape irrigation systems for commercial, institutional, and industrial sites, including the point of connection and backflow prevention, buried mainline and lateral piping, isolation and zone control valves and valve boxes, spray heads and gear-driven rotors with matched-precipitation-rate nozzles, drip and micro-irrigation and subsurface drip for planting beds, smart weather/ET-based and soil-moisture-based controllers, master valve and flow sensor, rain and freeze sensors, sleeving and boring under paving and hardscape, coverage and hydrozoning design principles, pressure and coverage testing, winterization, and as-built controller programming. Emphasizes water efficiency, EPA WaterSense criteria, and local water-purveyor and code requirements.
Exterior underground wet and dry site utilities for commercial, institutional, and industrial building projects, beginning 5 feet outside the building footprint and extending to the point of connection at the public main, meter, or utility owner's facility. Covers the site domestic and fire water service and on-site water distribution (ductile iron and PVC pressure pipe, valves, hydrants, service fittings, thrust restraint), the site sanitary sewer (gravity collection mains and laterals, and pressurized force mains and low-pressure sewer), and the underground dry-utility infrastructure for electrical and telecommunications service (direct-buried and concrete-encased duct banks, conduit, and manholes/handholes). Also covers the common trenching, bedding, embedment, backfill, separation, tracer-wire and marking-tape locating, pressure and leakage testing, deflection and air testing, and water-main disinfection that apply across these systems.