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A square group of 25 piles extends between depths of 2 m and 12 m in a deposit of 20 m thick stiff clay overlying rock. The piles are 0.5 m in diameter and are spaced at 1 m centre to centre in the group. The undrained shear strength of the clay at the pile base level is 180 kPa and the average value of the undrained shear strength over the depth of the pile is 110 kPa. The adhesion coefficient (a) is 0.45, FOS against shear failure is 3. Take No = 9. %3D When pile acting in a group Qug Capacity of pile group

A square group of 25 piles extends between depths of 2 m and 12 m in a deposit of 20 m thick stiff clay overlying rock. The piles are 0.5 m in diameter and are spaced at 1 m centre to centre in the group. The undrained shear strength of the clay at the pile base level is 180 kPa and the average value of the undrained shear strength over the depth of the pile is 110 kPa. The adhesion coefficient (a) is 0.45, FOS against shear failure is 3. Take No = 9. %3D When pile acting in a group Qug Capacity of pile group

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A square group of 25 piles extends between depths of 2 m and 12 m in a deposit of 20 m thick stiff clay overlying rock. The piles are 0.5 m in diameter and are spaced at 1 m centre to centre in the group. The undrained shear strength of the clay at the pile base level is 180 kPa and the average value of the undrained shear strength over the depth of the pile is 110 kPa. The adhesion coefficient (a) is 0.45, FOS against shear failure is 3. Take No= 9. %3D When pile acting in a group Q,, Capacity of pile group
Transcribed Image Text:A square group of 25 piles extends between depths of 2 m and 12 m in a deposit of 20 m thick stiff clay overlying rock. The piles are 0.5 m in diameter and are spaced at 1 m centre to centre in the group. The undrained shear strength of the clay at the pile base level is 180 kPa and the average value of the undrained shear strength over the depth of the pile is 110 kPa. The adhesion coefficient (a) is 0.45, FOS against shear failure is 3. Take No= 9. %3D When pile acting in a group Q,, Capacity of pile group
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