Combination Drilled Shaft and Driven Pile Foundation for a High-Rise Buildingby Cynthia Shaw, Dames & Moore, United States,
Robert D. Darragh, Dames & Moore, United States,
Abstract: A case history is presented which discusses the design and construction of a combination drilled shaft and driven pile foundation which supports a high-rise in San Francisco. Drilled piers, up to 7 ft (2.1 m) in diameter, were used around the perimeter of the building to limit the depth of excavation and the related shoring and dewatering effect on adjacent streets and buildings. Driven 14-in (355.6 mm) prestressed concrete piles were used in the interior of the building. The paper discusses the site soil conditions and the design and problems encountered during construction of the foundation.
Subject Headings: Foundation design | Concrete piles | Drilled shafts | Shafts | Driven piles | Foundation construction | Case studies
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