Pile Load Test and Implementation of Specifications of Load and Resistance Factor Design

2011 ◽  
Vol 2212 (1) ◽  
pp. 23-33 ◽  
Author(s):  
Sungmin Yoon ◽  
Ching Tsai ◽  
James Matt Melton
Keyword(s):  
Resistance Factor ◽  
Load Test ◽  
Pile Load Test ◽  
Factor Design ◽  
Load And Resistance Factor

Load and Resistance Factor Design, Cost, and Risk: Designing a Drilled-Shaft Load Test Program in Florida Limestone

2003 ◽  
Vol 1849 (1) ◽  
pp. 98-106 ◽  
Author(s):  
Michael C. McVay ◽  
Ralph D. Ellis ◽  
Bjorn Birgisson ◽  
Gary R. Consolazio ◽  
Sastry Putcha ◽  
...  
Keyword(s):  
Laboratory Data ◽  
Resistance Factor ◽  
Load Test ◽  
Drilled Shaft ◽  
Load Testing ◽  
Load Tests ◽  
Factor Design ◽  
Drilled Shaft Foundations ◽  
Load And Resistance Factor ◽  
The Cost

Currently there are few if any guidelines on estimating the number of load tests in the design of drilled-shaft foundations in Florida limestone. For instance, for many sites there may be a similar number of field load tests but a significantly different number of design shafts. Moreover, little if any information exists on risk or reliability versus cost of drilled-shaft foundations or on the cost of field load testing. The collection of a large database of drilled-shaft tests (more than 25 with Osterberg and Statnamic devices), in situ laboratory data, drilled-shaft construction costs, and field load testing costs for Florida limestone is reported on. From the field load tests, the average unit skin friction for various sites was found, as well as the predicted values based on the Florida Department of Transportation recommended design approach. Next, using load and resistance factor design (LRFD), the resistance (ϕ) values were found for various reliabilities (risk or probability of failure). Once the factored design loads were known (from plans), drilled-shaft lengths were estimated on the basis of the computed LRFD ϕ-values for different reliabilities (i.e., risk). From the linear length of the designed shaft as well as the expected cost per meter, a plot of total foundation cost versus reliability (risk) was generated for each site. On the basis of the latter plot, acceptable risk, and the cost of field load testing (bid and itemized), the designer can identify the cost savings of load testing and the appropriate number of tests to be performed.

Load and Resistance Factor Design Criteria for Connectors

1978 ◽  
Vol 104 (9) ◽  
pp. 1427-1441
Author(s):  
John W. Fisher ◽  
Theodore V. Galambos ◽  
Geoffrey L. Kulak ◽  
Mayasandra K. Ravindra
Keyword(s):  
Resistance Factor ◽  
Design Criteria ◽  
Factor Design ◽  
Load And Resistance Factor

Closure to “Load and Resistance Factor Design Criteria for Connectors”

1980 ◽  
Vol 106 (9) ◽  
pp. 1985-1986
Author(s):  
John W. Fisher ◽  
Theodore V. Galambos ◽  
Geoffrey L. Kulak ◽  
Mayasandra K. Ravindra
Keyword(s):  
Resistance Factor ◽  
Design Criteria ◽  
Factor Design ◽  
Load And Resistance Factor
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