A square footing of length 11 m is proposed as a foundation for a building. It is to be built on the surface of a deep layer of stiff clay. The foundation is estimated to carry a uniformly distributed load of 150 kN/m2. Undrained Young's modulus may be assumed to be constant with depth and equal to 16,500 kN/m2 and the effective Poisson's ratio is 0.3. Point F is on the clay surface and is shown 11m 5.5m F 11m 3m (a) Calculate the increase in vertical stress due to this surcharge at 8 m below Point F. (b) Calculate the immediate and total settlement at Point F.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A square footing of length 11 m is proposed as
a foundation for a building. It is to be built on
the surface of a deep layer of stiff clay. The
foundation is estimated to carry a uniformly
distributed load of 150 kN/m2. Undrained
Young's modulus may be assumed to be
constant with depth and equal to 16,500
kN/m2 and the effective Poisson's ratio is 0.3.
Point F is on the clay surface and is shown
11m
5.5m
11m
3m
(a) Calculate the increase in vertical stress due
to this surcharge at 8 m below Point F.
(b) Calculate the immediate and total
settlement at Point F.
Transcribed Image Text:A square footing of length 11 m is proposed as a foundation for a building. It is to be built on the surface of a deep layer of stiff clay. The foundation is estimated to carry a uniformly distributed load of 150 kN/m2. Undrained Young's modulus may be assumed to be constant with depth and equal to 16,500 kN/m2 and the effective Poisson's ratio is 0.3. Point F is on the clay surface and is shown 11m 5.5m 11m 3m (a) Calculate the increase in vertical stress due to this surcharge at 8 m below Point F. (b) Calculate the immediate and total settlement at Point F.
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