LRFD Pile Design Examples

1 LRFD pile Design Examples Iowa DOT ~ Bridges and Structures Bureau ~ July 2021 Overview These Examples in customary (or English) units have been extracted and revised from the following publication: Green, Donald, Kam W. Ng, Kenneth F. Dunker, Sri Sritharan, and Michael Nop. (2012). Development of LRFD Procedures for Bridge pile Foundations in Iowa - Volume IV: Design Guide and Track Examples . IHRB Projects TR-573, TR-583, and TR-584. Institute for Transportation, Iowa State University, Ames, Iowa. In general the revisions are intended to relate the Examples specifically to Iowa Department of Transportation (Iowa DOT), Bridges and Structures Bureau (OBS) policy in the Bridge Design Manual (BDM). A summary of the revisions from Volume IV follows. Move the contract length and resistance and the driving and construction control notes from Volume IV Articles to BDM listing (of Bridge Substructure CADD Notes), E718, E719, E818, and E819.

• Add structural design to Step 3 of all examples. Because the Iowa DOT pile load tests used in calibration were conducted at a time when Standard Penetration Test hammers averaged about 60% efficiency and because the industry is moving toward a 60% standard, in the future the Iowa DOT intends to use N 60-values from Standard Penetration Tests.

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  Design, Structural, Pile, Structural design, Pile design

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