Note: Swelling Pressure = 4xx kN/m2 where xx is the last number from student ID. Example for ID 118934, xx is 34 thus, Swelling Pressure = 434 kN/m2 and Q1. An expansive soil profile has an active zone thickness of 6.0 m. A shallow foundation is to be constructed 1.5 m below the ground surface. A swelling pressure test provided the following data: Depth below ground surface m Swell under foundation, Sw 1.5 4 2.5 3 3.5 1.5 4.5 0.8 5.5 a. Estimate the total possible swell under the foundation. b. If the allowable total swell is 20 mm, what would be the necessary undercut?
Note: Swelling Pressure = 4xx kN/m2 where xx is the last number from student ID. Example for ID 118934, xx is 34 thus, Swelling Pressure = 434 kN/m2 and Q1. An expansive soil profile has an active zone thickness of 6.0 m. A shallow foundation is to be constructed 1.5 m below the ground surface. A swelling pressure test provided the following data: Depth below ground surface m Swell under foundation, Sw 1.5 4 2.5 3 3.5 1.5 4.5 0.8 5.5 a. Estimate the total possible swell under the foundation. b. If the allowable total swell is 20 mm, what would be the necessary undercut?
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter15: Foundations On Difficult Soil
Section: Chapter Questions
Problem 15.7P
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Transcribed Image Text:Note: Swelling Pressure = 4xx kN/m2 where xx is the last
number from student ID. Example for ID 118934, xx is 34
thus, Swelling Pressure = 434 kN/m2 and
Q1. An expansive soil profile has an active zone thickness of
6.0 m. A shallow foundation is to be constructed 1.5 m
below the ground surface. A swelling pressure test provided
the following data:
Depth below ground surface m Swell under foundation, Sw
1.5
4
2.5
3
3.5
1.5
4.5
0.8
5.5
a. Estimate the total possible swell under the foundation.
b. If the allowable total swell is 20 mm, what would be the
necessary undercut?
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