Hydronic Piping, Phase 3, Thomas P. O'Neill Federal Building, Boston, MA

Thomas Phillip O’Neill Federal Building in Boston, MA, was constructed in 1985 with over 850,000 square feet of office and support floor area. The hydronic piping systems that provide heating and cooling throughout the building have extensive exterior corrosion from the accumulation and trapping of condensation within the insulation and are at risk of failure. This project systematically replaces aging hydronic piping on the North elevation (Phase 3). This project will provide for a complete replacement of all risers, valves, main and branch piping lines, shut-offs, insulation, fire stopping and all other accessories. Work will be performed both on and off hours during the non-heating season. The tenant agencies will have a say on when work can be performed in their space. Daytime work is in an occupied office building setting. Work includes, but is not limited to, the opening of gypsum wallboard (GWB) columns to access the risers, acoustical ceiling work to access the branch piping, moving of furniture, protecting existing building finishes and furnishings, patching/painting of GWB, and re-installation of acoustical ceiling systems.

Division 22 -	Plumbing.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Hydronic Piping and Pumps.
Division 33 -	Utilities, Instrumentation and Control for Utilities, Water Utilities, Water Utility Distribution Piping, Water Utility Distribution Equipment, Disinfecting of Water Utility Distribution, Water Utility Storage Tanks.