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Underground Chilled Water Piping

NYCHA Design Guidelines > Plumbing > Underground Chilled Water Piping

Underground Chilled Water Piping

Description

  • Projects in this scope area include design and installation of underground chilled water distribution piping and associated appurtenances to serve the development’s HVAC systems and central plant. Work covers trenching, pipe bedding and backfill, insulated piping, fittings, isolation and balancing valves, expansion joints, vaults/manholes, thrust blocks, and connections to building risers and the central chilled water plant.  

Relevant Codes & Regulations

NYC Mechanical Code — Hydronic & Chilled Water Systems
Design and installation requirements for chilled water piping
ASME B31 — Pressure Piping Code
National standards for pressure piping materials and joints
NYC Energy Conservation Code
Thermal insulation and heat loss prevention requirements
OSHA — Excavation & Underground Utilities
Worker safety requirements during trenching and installation

Strategies

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Optimize Performance, Operation & Maintenance of Buildings, Systems & Assets

Last Updated on January 10, 2026 at 8:09 am