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San Francisco, California

Malcolm was selected by Swinerton Builders to provide a shoring, dewatering and ground improvement package for the 505 Brannan project site located just 3 blocks from the Giants Baseball Park. The single point, deep soil mixed shoring wall was installed to depths up to 42 feet, tipping out into the Franciscan Rock formation. Currently, tiebacks are being installed around the perimeter to allow the site to be excavated to final subgrade 24 feet below street level. At the bottom of the excavation, 7 foot diameter deep soil mixed columns will be installed on a 9 x 9 feet grid to mitigate settlement of the mat slab. The tight project site, loose dune sand, adjacent building protection, and buried wooden piles are just a few of the challenges our Northern California crews are working through as the project remains on schedule.

For more information, please contact Rob Small at

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