SITUATION: In accordance with Boussinesq theory, the vertical stress at a point below the center of flexible circular area in a semi-infinite homogeneous isotropic soil mass due to uniform

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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SITUATION: In accordance with Boussinesq theory, the vertical
stress at a point below the center of flexible circular area in a
semi-infinite homogeneous isotropic soil mass due to uniform
load is given by the expression:
P = q(1 --)
Where
N= (1+(R/z)?)3/2
R= radius of circular area
z = depth of interest at which stress is induced
q = intensity of pressure on the circular area (load per unit area
at the base of the footing)
%3D
How deep, in meters, below the footing would the pressure be reduced by 1/10 of the pressure
at the base of the footing.
1.05
2.25
O 1.82
1.73
Transcribed Image Text:SITUATION: In accordance with Boussinesq theory, the vertical stress at a point below the center of flexible circular area in a semi-infinite homogeneous isotropic soil mass due to uniform load is given by the expression: P = q(1 --) Where N= (1+(R/z)?)3/2 R= radius of circular area z = depth of interest at which stress is induced q = intensity of pressure on the circular area (load per unit area at the base of the footing) %3D How deep, in meters, below the footing would the pressure be reduced by 1/10 of the pressure at the base of the footing. 1.05 2.25 O 1.82 1.73
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