Overcoming challenging design constraints, GeoEngineers designed and modeled a unique combined shoring system to significantly reduce costs for a 39-story mixed use high-rise in downtown Seattle.
Removing and replacing the alley soils was impossible due to the presence of sensitive downtown electric and communication utilities, and with an adjacent 50-foot-deep basement wall across the alley, the only typically available alternative was expensive internal bracing. GeoEngineers challenged conventional thinking by:
ACEC-Washington Engineering Excellence Award, 2007
ASCE-Outstanding Project Award, 2006
The high-rise, consisting of 170 upscale condominiums atop a 343-room luxury hotel, was completed in 2007. The owner estimated that the innovative shoring approach saved more than $1.5 million.