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A building has to be supported over a raft foundation of dimensions 15 m x 25 m. The soil is clay having unconfined compressive strength of 20 kN/m2. The safe pressure to be applied at the base of raft is 180 kN/m2. The building has provision of basement floors, then recommend the depth of raft foundation. Use FOS = 3.0 and unit weight of clay = 19 kN/m³. Adopt Skempton's approach.

A building has to be supported over a raft foundation of dimensions 15 m x 25 m. The soil is clay having unconfined compressive strength of 20 kN/m2. The safe pressure to be applied at the base of raft is 180 kN/m2. The building has provision of basement floors, then recommend the depth of raft foundation. Use FOS = 3.0 and unit weight of clay = 19 kN/m³. Adopt Skempton's approach.

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 building has to be supported over a raft foundation of dimensions 15 m x 25 m. The soil is clay having unconfined compressive strength of 20 kN/m?. The safe pressure to be applied at the base of raft is 180 kN/m2. The building has provision of basement floors, then = 19 kN/m3. Adopt recommend the depth of raft foundation. Use FOS = 3.0 and unit weight of clay Skempton's approach.
Transcribed Image Text:A building has to be supported over a raft foundation of dimensions 15 m x 25 m. The soil is clay having unconfined compressive strength of 20 kN/m?. The safe pressure to be applied at the base of raft is 180 kN/m2. The building has provision of basement floors, then = 19 kN/m3. Adopt recommend the depth of raft foundation. Use FOS = 3.0 and unit weight of clay Skempton's approach.
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