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Many bridges are constructed in areas where there is compressible soil or liquefiable soil, which necessitates the consideration of downdrag forces and associated settlement. Downdrag for static and seismic conditions has increasingly placed greater demands on existing and new foundations and also led to higher construction costs.

NCHRP Research Report 1112: Design of Piles for Downdrag presents procedures for determining downdrag loads used in the design of bridge piles.

The NCHRP Research Report 1112 appendices are available as NCHRP Web-Only Document 398: Pile Design for Downdrag: Examples and Supporting Materials.

Suggested Citation

National Academies of Sciences, Engineering, and Medicine. 2024. Design of Piles for Downdrag. Washington, DC: The National Academies Press.

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Publication Info

76 pages |  8.5 x 11 |  Paperback
ISBN: 978-0-309-70990-3

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