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Kiewit

World Trade Center Slurry Wall

World Trade Center Slurry Wall - Manhattan, N.Y.

      The Kiewit-led joint venture was contracted to install an 80,000 square-foot slurry wall structure measuring 1,200 feet long and ranging in depth from 70 to 120 feet along the eastern portion of the major bathtub. The structure will surround the foundation of the new Transit Hub for the Port Authority of New York and New Jersey, its north-south pedestrian concourses and World Trade Center (WTC) buildings 2, 3 and 4. The wall is being installed in stages along Liberty, Church and Vesey Streets to secure the existing structure that was damaged as a result of the 9/11 attacks.

      Several projects are taking place at the same time on this site resulting in limited space for building the slurry wall rebar cages and requiring materials to be removed from the site upon excavation. The project requires 50 rebar cages to reinforce the concrete foundation walls.

      Once the new slurry walls are completed, the interior of the eastern portion of the site will be excavated to bedrock connecting a significant portion of the existing Hudson and Manhattan Railroad basement wall along Church Street to expand the existing bathtub structure for the eastern portion of the WTC Site. The WTC memorial and Freedom Tower will be constructed within the existing slurry wall referred to as the west bathtub, that was constructed in 1967.

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