70.34 N60 o' = tan 12.2 + 20.3 Pa) Depth (ft) Unit weight of soil (Ib/ft?) Ngo 10 106 7 15 106 9 20 106 11 25 118 16 30 118 18 35 118 20 40 118 22
70.34 N60 o' = tan 12.2 + 20.3 Pa) Depth (ft) Unit weight of soil (Ib/ft?) Ngo 10 106 7 15 106 9 20 106 11 25 118 16 30 118 18 35 118 20 40 118 22
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Following are the standard penetration numbers determined from a sandy soil in the field: Using Eq. (3.30), determine the variation of the peak soil friction angle, Φ'. Estimate an average value of Φ' for the design of a shallow foundation. (Note: For depth greater than 20 ft, the unit weight of soil is 118 lb/ft3.)
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