Building Constructed Up and Down at Once

by Charles W. Koch, Proj. Exec.; Turner Construction Co., Los Angeles, CA,

Serial Information: Civil Engineering—ASCE, 1987, Vol. 57, Issue 5, Pg. 72-74

Document Type: Feature article


The One Westwood Building, now going up in Los Angeles' suburban Westwood, is being built up and down from ground level simultaneously. The key was a slurry wall surrounding the site and placed before basement excavation began. It keeps out water in three aquifers that intercept the 85 ft deep basement, and provides temporary and permanent support for the ground surrounding the site. After the basement is excavated down one floor at a time, a floor's steel frame is installed and keyed into the slurry wall, thus supporting the wall laterally from inside the excavation. Earth excavated from below basement floors is removed through a hole in the center of each basement floor.

Subject Headings: Basements | Excavation | Floors | Slurry walls | Slurries | Steel frames | Suburbs | Aquifers

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