Nondestructive testing of drilled shaft foundations

Daniel Speer

doi:10.1117/12.209758

19 May 1995 Nondestructive testing of drilled shaft foundations

Daniel Speer

Proceedings Volume 2456, Nondestructive Evaluation of Aging Bridges and Highways; (1995) https://doi.org/10.1117/12.209758
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

Abstract

Caltrans has shown that gamma-gamma logging is a viable, nondestructive method for detecting defects in drilled shaft bridge foundations. These defects, if left undetected, could contribute to early failure during an earthquake. This form of nondestructive testing is required by Caltrans for all drilled shafts constructed by slurry displacement methods, and is a proven technology in the field. This paper will provide an overview of Caltrans nondestructive testing practices and presents a case study demonstrating defects which can be discovered during construction.

Citation Download Citation

Daniel Speer "Nondestructive testing of drilled shaft foundations", Proc. SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, (19 May 1995); https://doi.org/10.1117/12.209758

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