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Combination Drilled Shaft and Driven Pile Foundation for a High-Rise Building

by Cynthia Shaw, Dames & Moore, United States,
Robert D. Darragh, Dames & Moore, United States,



Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

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: Pile foundations | Foundation design | Driven piles | Foundation construction | Load bearing capacity | Drilled shafts | Concrete piles

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