PROBLEM 1. A rectangular raft of size 50 x 20 m founded at a depth of 4.5 m below the ground surface is subjected to a uniform pressure of 250 kPa. Assume the center of the area with coordinates (5, 5) and the corners have coordinates (10, 25). Calculate stresses at a depth of 25 m below the foundation level by the methods of (a) Boussinesq, and (b) Westergaard at coordinates of (5, 5), (0, 25), (10, 0) (10, 25) and (20, 35). Neglect the effect of foundation depth on the stresses. PROBLEM 1.A rectangular raft of size 50 x 20 m founded at a depth of 4.5 m below the ground surface issubjected to a uniform pressure of 250 kPa. Assume the center of the area with coordinates (5, 5)and the corners have coordinates (10, 25). Calculate stresses at a depth of 25 m below thefoundation level by the methods of (a) Boussinesq, and (b) Westergaard at coordinates of (5, 5),(0, 25), (10, 0) (10, 25) and (20, 35). Neglect the effect of foundation depth on the stresses.

Sol. rectangular raft = 50×20 m depth = 4.5 m Uniform pressure =250 KPa Centre of area coordinates…

A rectangular raft of size 50 x 20 m founded at a depth of 4.5 m below the ground surface is subjected to a uniform pressure of 250 kPa. Assume the center of the area with coordinates (5, 5) and the corners have coordinates (10, 25). Calculate stresses at a depth of 25 m below the foundation level by the methods of (a) Boussinesg, and (b) Westergaard at coordinates of (5, 5), (0, 25), (10, 0) (10, 25) and (20, 35). Neglect the effect of foundation depth on the stresses.

A rectangular raft of size 50 x 20 m founded at a depth of 4.5 m below the ground surface is subjected to a uniform pressure of 250 kPa. Assume the center of the area with coordinates (5, 5) and the corners have coordinates (10, 25). Calculate stresses at a depth of 25 m below the foundation level by the methods of (a) Boussinesg, and (b) Westergaard at coordinates of (5, 5), (0, 25), (10, 0) (10, 25) and (20, 35). Neglect the effect of foundation depth on the stresses.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter10: Stresses In A Soil Mass

Section: Chapter Questions

Problem 10.19P

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