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Construction Design & Engineering
Posted: April 15, 2016
Helical Drilling provides services for 170 West Broadway St. project
170 West Broadway, South Boston, Mass.
170 West Broadway, South Boston, Mass.
South Boston, MA Helical Drilling installs Secant Pile Wall to provide both temporary excavation and permanent foundation support for the 170 West Broadway St. project.The 5-story mixed-use structure is being built on a 16,800 s/f site and will include a single-level underground parking garage extending below the water table.
The developer needed to make the best and most efficient use of all real estate available while providing foundation support for the proposed building, controlling groundwater seepage during and after construction, and providing shoring of adjacent building foundations. To overcome the high water table, zero lot line support against neighboring structures, and to eliminate construction vibrations, the design team used a secant pile wall system.
Using its specialty single-pass drilling method, Helical Drilling was able to optimize the wall design by cutting the diameter of the piles by 40%. This method uses a double-auger head system that allows installation of high-stiffness secant piles in a broad range of soil conditions and within inches of adjacent structures.
View case study: https://helicaldrilling.com/case-study/secant-pile-westbroadway/
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