Transcription of 3-1 Deep Foundations
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3-1 Deep Foundations
Me o to Designers 3-1 June 2014 Section 3-1 Deep FoundationsMeMo to Designers 3-1 June 20141 LRFD3-1 DEEP FOUNDATIONSDeep Foundations are structural components that in comparison to shallow Foundations transfer load into deeper layers of earth materials. Deep Foundations , generically referred to herein as piles, can be driven piles, drilled shafts, micropiles, and grouted-in-place piles. Vertical ground anchors (tie-downs) are also classified as deep Foundations . Piles can be used in a group with a cap footing, or as a single pile /shaft supporting a column. Structure Designer (SD) is responsible for calculating the pile factored design loads and for providing structural details. Geotechnical Services (GS) of Materials Engineering and Testing Services and Geotechnical Services (METS-GS) is responsible for providing foundation recommendations that include site seismicity, factored downdrag loads, pile tip elevations ( based on the factored design loads provided by SD), construction recommendations ( pile acceptance criteria, testing requirements, etc.)
(based on the factored design loads provided by SD), construction recommendations (pile ... results in a horizontal displacement of 0.25 in. at the top or cut-off elevation of the pile/shaft. The ... piles are not permitted where seismic considerations are critical. The nominal resistance for timber piles is 180 kips. Pile information for ...
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