DBM Contractors, Inc., with support from alliance partner Pennine, completed the design/build installation of the ground improvement at the $255-million Washington State Department of Information Services building on the Wheeler site in Olympia. Crews installed 2,200 stone columns to a depth of between 15 ft and 30 ft to improve the soils below the structural foundations and to increase the soil bearing capacity, reduce static settlement and reduce liquefaction risk in the liquefiable soils.
The three-building campus will serve as office and data center space for the state. The general contractor on the 394,000-sq-ft project is Howard S. Wright Constructors and the developer is Wright Runstad & Co.