SWISS BANK CORPORATION URBAN REDEVELOPMENT
The new 1.2 million square foot regional headquarters of the Swiss Bank Corporation, with state-of-the–art trading floor, covers twelve acres and four city blocks. The project required demolition of twenty existing structures within a blighted area of downtown Stamford, CT. Langan developed a subsurface investigation program aimed at providing all of the geotechnical information required to design the three-phase implementation of this project. Concerns included differential settlement between the Trading Building and the adjoining Office Towers to be founded on different bearing strata; potential groundwater problems in the lower parking levels; and preconstruction for the Phase 2 and 3 Office Towers two levels lower than the Phase 1 construction. A cost-effective spread, strip and mat foundation system accommodated high loads and variable subsurface conditions, meeting all of the owner's needs and adhering to the fast-track schedule. Langan has assisted in the implementation of this design through on-site foundation construction supervision allowing for timely selection of specified alternative foundation designs.