Skin Friction Load Test for Caissons in Residual Soils

by Ernest Winter, Schnabel Engineering Assoc, United States,
Theodore S. Nordmark, Schnabel Engineering Assoc, United States,
Timothy Burns, Schnabel Engineering Assoc, United States,

Document Type: Proceeding Paper

Part of: Foundation Engineering: Current Principles and Practices


Results of a load test on a drilled pier are presented. The test was performed to measure only skin friction of a 36 inch (0.91 m) diameter shaft without support at the end. The load test was performed in disintegrated rock which is derived from weathering of schist rock in the Piedmont. Although skin friction is often relied upon in the design of caissons, no published test data is known to be available for this formation. The load test results are correlated to standard penetration testing, pressuremeter testing, and cone penetration data.

Subject Headings: Load tests | Penetration tests | Load factors | Skin friction | Caissons | Pile tests | Soil tests | Residual soils

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