30 Hudson Street
- Location: Jersey City, NJ
- Owner: Goldman Sachs
- Technique(s) Utilized: Diaphragm Wall, Anchors
Background
Nicholson Construction Company built a bathtub using a 30-inch thick diaphragm wall. The wall was excavated through urban fill, including buried seawalls, and ultimately founded in rock. The wall was approximately 77,500 square feet and supported by 490 rock anchors with capacities up to 600 kips. The tallest building constructed in New Jersey was erected within the bathtub.
The building footprint measures approximately 460 feet by 380 feet and diaphragm wall depths range from 36 feet to 60 feet below grade to accommodate four floors of
underground parking. The building is located within 80 feet of the Hudson River. The wall excavation was performed
using bentonite slurry for support. The diaphragm wall
system was selected due to the subsurface conditions which
included a historical riverfront bulkhead, old foundations, the dense Manhattan Schist formation, and a high ground water level. Nicholson completed the foundation package in conjunction with joint venture partner, E.E. Cruz Company.
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