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Rehabilitate Utilidors: HTHW Phase 2

Second phase of upgrading High Temp Hot Water system.

Project Update as of December 10, 2018

Phase 2 construction work has been completed.  The work this summer focused on repairs to the existing piping underneath the Central 4 parking lot, in the Heating Plant, in Mechanical Services, and in sections of the tunnels, located underneath the Main Plaza.  New piping was fabricated and installed in the open box tunnels.  The box tunnels have been re-sealed, waterproofed, and buried again.  The contractor is in the process of consolidating their staging area in the Central 4 parking lot. 

Since these pipes provide the heating to our academic buildings, the work can only be done outside of our normal heating seasons (between the end of May and October).

The previous phase included replacing existing (HTHW) lines from our Heating Plant located at the end of Salter Drive up to the Central 5 parking lot. The next phase will focus on the remaining areas, as well as running a new gas line to our Physical Education building as part of a tie-in to another project to provide Co-Gen power at the gym.

Project Overview

The High Temp Hot Water (HTHW) System at Purchase College is in poor condition in some locations and fair condition in other locations. Many components are original and have not been replaced or upgraded since originally installed. The college has been addressing ongoing leaks throughout the system and a number of previous emergency projects have revealed unreliable and potentially unsafe conditions in the system.

The system stretches from the Heating Plant located at the Facilities complex and stretches south, running parallel to Lincoln Avenue, until it reaches the Mechanical Services building, located beneath Student Services. From there it stretches out in both the north and south tunnels to supply the academic buildings.

Due to the size of this project, the project will be divided into two phases. The first phase addressed the most critical areas and was completed in the summer of 2015. This allows us to correct the portion of the system that is of greatest concern for safety and reliability.

Additional phases will address the remaining issues.


Timeline  /  Construction

Agency / State University Construction Fund

Design / O’Brien & Gere Engineers, Inc.

Contractor / Maric Mechanical / Maric Plumbing & Heating

Budget / $