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Proceedings Paper

Nondestructive testing of drilled shaft foundations
Author(s): Daniel Speer
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Paper 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.

Paper Details

Date Published: 19 May 1995
PDF: 6 pages
Proc. SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, (19 May 1995); doi: 10.1117/12.209758
Show Author Affiliations
Daniel Speer, California Dept. of Transportation (United States)

Published in SPIE Proceedings Vol. 2456:
Nondestructive Evaluation of Aging Bridges and Highways
Steven B. Chase, Editor(s)

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