Load Tests on Bored Friction Piles in Clay

by William H. Hover, Goldberg-Zoino & Associates Inc, United States,
Richard M. Simon, Goldberg-Zoino & Associates Inc, United States,
Harry G. Cooke, Goldberg-Zoino & Associates Inc, United States,



Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices

Abstract: For the first time in Boston, Massachusetts, U.S.A., uncased bored friction piles in clay were used to support a six-story residential structure over a 60- to 75-foot (1.83 to 22.9 m) thick deposit of very stiff to very soft clay. Bored piles were installed rather than driven piles to reduce vibrations and the risk of damage to adjacent old buildings and an existing sewer tunnel underlying the proposed building. Load tests to failure were performed on two test piles instrumented with strain gages and telltale anchors. Results of the load tests, including load versus settlement plots and load transfer plots were presented and interpreted.

Subject Headings: Bored piles | Load tests | Pile tests | Load transfer | Load factors | Soil tests | Friction | Clays | Driven piles | Pile settlement | North America | Massachusetts | United States | Boston

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