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InTrans / Aug 14, 2018

Design of timber foundation piling for highway bridges and other structures

Presented information on structures supported by
treated timber piling, including details of the East
Side (FDR) Drive in New York City. Determined the
average and mean Factor of Safety of the
Engineering News Formula for 43 site-specific cases.
Showed examples of present-day design for timber
piling supported by friction, end bearing, or a
combination of both. Considered practical and
theoretical geotechnical design criteria. Furnished
timber piling and preservative specifications.
Reviewed durability for foundation, fresh water, and
marine piling. Addressed environmental
considerations. Concluded that local Geotechnical
engineers apply empirical experience to design
treated round timber foundation piling.

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