TRID
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Title:

COMPARISON OF METHODS FOR ESTIMATING PILE CAPACITY. FINAL REPORT

Accession Number:

00478207

Record Type:

Monograph

Availability:

National Technical Information Service

5301 Shawnee Road
Alexandria, VA 22312 USA

Abstract:

A comparative study of ten pile driving formulas is described. The formulas are the Danish, ENR, Modified ENR, Eytelwein, Gates, Hiley, Janbu, Navy-Mckay, PCUBC, and Weisbach. The ultimate load for each of sixty-three pile load tests was determined using the Q-D over 30 method to determine ultimate capacity. The predicted pile capacity was divided by the measured capacity to obtain normalized values. Statistical analyses for coefficient of variation were performed on the logarithm of the normalized capacities to determine which formula provided the most consistent prediction of pile capacity. The Gates formula proved to be the best and the widely used ENR one of the worst with a coefficient of variation approximately 2-3 times higher than that for the Gates formula.

Report Numbers:

WA-RD 163.1

Contract Numbers:

Y3400, Task 9

Corporate Authors:

Washington State University, Pullman

Department of Civil and Environmental Engineering
P.O. Box 642910
Pullman, WA 99164-2910 USA

Washington State Department of Transportation

Transportation Building, 310 Maple Park Avenue SE, P.O. Box 47300
Olympia, WA 98504-7300 USA

Federal Highway Administration

1200 New Jersey Avenue, SE
Washington, DC 20590 USA

Authors:

FRAGASZY, R J
Higgins, J D
Argo, D E

Pagination:

62 p.

Publication Date:

1988-8

Features:

Appendices (8) ; Figures (4) ; References (7) ; Tables (5)

Old TRIS Terms:

Subject Areas:

Bridges and other structures; Data and Information Technology; Design; Highways; I24: Design of Bridges and Retaining Walls

Files:

TRIS, USDOT, STATEDOT

Last Modified:

Dec 31 1988 12:00AM