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Importance of Proof-Load Tests in Foundation Reliability

Najjar, Shadi S. / Gilbert, Robert B.

Proof-load tests play an important role in verifying the validity of design methods and construction procedures. Recently, there has been considerable interest in maximizing the value of proof-load tests in foundation design within a reliability-based framework. The objectives of this paper are to (1) illustrate how static proof-load tests can affect the reliability and design of a tested foundation, (2) discuss the effect of uncertainty in the measured proof load on the calculated reliability, and (3) study how the results of proof-load tests conducted on a limited number of foundations using relatively small proof loads can be utilized to update the tail of the capacity distribution. Results indicate that proof loads can result in a significant increase in the reliability for a foundation, even when the proof load is significantly smaller than the predicted capacity.

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Importance of Proof-Load Tests in Foundation Reliability

Najjar, Shadi S. / Gilbert, Robert B.

Proof-load tests play an important role in verifying the validity of design methods and construction procedures. Recently, there has been considerable interest in maximizing the value of proof-load tests in foundation design within a reliability-based framework. The objectives of this paper are to (1) illustrate how static proof-load tests can affect the reliability and design of a tested foundation, (2) discuss the effect of uncertainty in the measured proof load on the calculated reliability, and (3) study how the results of proof-load tests conducted on a limited number of foundations using relatively small proof loads can be utilized to update the tail of the capacity distribution. Results indicate that proof loads can result in a significant increase in the reliability for a foundation, even when the proof load is significantly smaller than the predicted capacity.

Importance of Proof-Load Tests in Foundation Reliability

Najjar, Shadi S. / Gilbert, Robert B.

Proof-load tests play an important role in verifying the validity of design methods and construction procedures. Recently, there has been considerable interest in maximizing the value of proof-load tests in foundation design within a reliability-based framework. The objectives of this paper are to (1) illustrate how static proof-load tests can affect the reliability and design of a tested foundation, (2) discuss the effect of uncertainty in the measured proof load on the calculated reliability, and (3) study how the results of proof-load tests conducted on a limited number of foundations using relatively small proof loads can be utilized to update the tail of the capacity distribution. Results indicate that proof loads can result in a significant increase in the reliability for a foundation, even when the proof load is significantly smaller than the predicted capacity.

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Title:

Importance of Proof-Load Tests in Foundation Reliability

Contributors:

Najjar, Shadi S. (author) / Gilbert, Robert B. (author)

Conference:

International Foundation Congress and Equipment Expo 2009 ; 2009 ; Orlando, Florida, United States

Published in:

Contemporary Topics in In Situ Testing, Analysis, and Reliability of Foundations ; 340-347

Publication date:

2009-03-10

ISBN:

DOI:

https://doi.org/10.1061/41022(336)44

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

Keywords:

Load and resistance factor design , Computation , Structural reliability , Design , Load tests , Foundations , Deep foundations , In situ tests

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