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Unique Installation Methods for Large Interceptor in Poor Soil Conditions

by Antoni J. Zelechowski, Boston Water & Sewer Commission, Boston, MA, USA,
Robert Cusick, Boston Water & Sewer Commission, Boston, MA, USA,
Peter K. Taylor, Boston Water & Sewer Commission, Boston, MA, USA,



Document Type: Proceeding Paper

Part of: Advances in Underground Pipeline Engineering

Abstract:

The construction of approximately 1. 5 miles of a major sewer interceptor in downtown Boston encountered some unique construction challenges. The entire route required dewatering during construction and due to its urban location, the line is being installed inside sheeted excavation over much of its length. Placement of lean concrete (sewercrete) in lieu of piles resulted in a contract savings of 5% (900,000), as well as a reduction in construction activity in congested urban areas. The project is 70% complete and at this point it is on schedule and within budget. This success is due in large measure to the very complete and well prepared design package, a knowledgeable and innovative contractor and a well informed and open minded owner.

Subject Headings: Sewers | Urban areas | Soil properties | Excavation | Construction management | Pipe piles | Dewatering | Boston | Massachusetts | United States

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