Transcription of 3-1 DEEP FOUNDATIONS - Caltrans
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3-1 DEEP FOUNDATIONS - Caltrans
Section 3-1 deep FoundationsMeMo to Designers 3-1 August 20131 LRFDDRAFT3-1 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 Design (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.)
MEMO TO DESIGNERS 3-1 • AUGUST 2013 2 Section -1 Deep Foundations LRFD DRFT Special Consideration for Alternative ‘X’ Piles The 12-inch square precast prestressed Class 90 and Class 140 concrete piles, Alternative ‘X’,
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