During geological investigation on a site, it was observed that subsoil contains 7.5 mdepth of clay followed by some other incompetent layers. The consultant decided todesign a friction pile group which should be economical and able to carry the anticipatedload of 1.5 x 10° N excluding the weight of pile cap. Design and draw the plan of themost suitable friction pile group considering the following parameters:= 0.030 N/ mm- 2.25Cohesion intercept of clayey layerFactor of safety against shear failureWeight of pile cap= 110000NPile diameter300 mm%3D

We know that, Total load = (Load × FOS) + Weight of pile cap=1500 kN×2.25 + 110 kN=3485 kN

Answered: During geological investigation on a…

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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During geological investigation on a site, it was observed that subsoil contains 7.5 m depth of clay followed by some other incompetent layers. The consultant decided to design a friction pile group which should be economical and able to carry the anticipated load of 1.5 x 106 N excluding the weight of pile cap. Design and draw the plan of the most suitable friction pile group considering the following parameters:Cohesion intercept of clayey layer = 0.030 N/ mm2Factor of safety against shear failure = 2.25Weight of pile cap = 110000NPile diameter = 300 mm
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