A12-in. steel H-pile is driven 60 ft into clay soil as follows: From the ground surface to a depth of 30 ft, the cohesion is 800 psf and the unit weight is 105 pcf; below 30 ft, the cohesion cu is 2,000 psf and the unit weight is 115 pcf. Assume that the upper clay layer is normally consolidated and the deeper clay is overconsolidated. Use the α-method to determine the axial capacity of the pile, using a factor of safety of 2.75. Compute the shaft capacity assuming that resistance is developed on the surface of the rectangle (12 in. square) that encloses the pile.
A12-in. steel H-pile is driven 60 ft into clay soil as follows: From the ground surface to a depth of 30 ft, the cohesion is 800 psf and the unit weight is 105 pcf; below 30 ft, the cohesion cu is 2,000 psf and the unit weight is 115 pcf. Assume that the upper clay layer is normally consolidated and the deeper clay is overconsolidated. Use the α-method to determine the axial capacity of the pile, using a factor of safety of 2.75. Compute the shaft capacity assuming that resistance is developed on the surface of the rectangle (12 in. square) that encloses the pile.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A12-in. steel H-pile is driven 60 ft into clay soil as follows: From the ground surface to a depth of 30 ft, the cohesion is 800 psf and the unit weight is 105 pcf; below 30 ft, the cohesion cu is 2,000 psf and the unit weight is 115 pcf. Assume that the upper clay layer is normally consolidated and the deeper clay is overconsolidated. Use the α-method to determine the axial capacity of the pile, using a factor of safety of 2.75. Compute the shaft capacity assuming that resistance is developed on the surface of the rectangle (12 in. square) that encloses the pile.
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