Global Terminals Container Wharf Expansion

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Location: Jersey City, New Jersey
Owner: Global Terminal, LLC
Completion Date: June 1, 2013
Categories: Marine Infrastructure, Construction, Projects

This design-build project involved construction of a 90,000 sf., 24” square precast pile-supported container wharf pier structure adjacent to an existing, active cargo facility. The superstructure consisted of precast and structural steel pile caps and girders, precast deck planks, and a cast-in-place pier deck. Deck finishing consisted of concrete pavement, rail installation, and installation of vessel fender and mooring hardware. The project also included upgrades to upland facilities including roadways, electrical, and mechanical systems.

An existing, 12’ diameter sewer outfall tunnel ran below the harbor bottom under the footprint of the wharf extension. Due to concerns about the existing condition of the tunnel, vibrations produced during pile driving were limited to 0.5 in/sec and below. To address this concern, Weeks developed an innovative vibration-monitoring program to ensure pile driving near the outfall tunnel did not exceed these limits. Tri-axial geophones were grouted into 4” diameter drilled boreholes at the tunnel springline elevation. 

Other design considerations in the area of the tunnel included a 500 ton, 190’ long steel truss element to span the tunnel right of way. This innovative solution allowed the owner to build a contiguous extension to their facility, rather than avoid work near the tunnel completely.