a. Determine the settlement of a clay layer

Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Braja M. Das, Khaled Sobhan
Chapter11: Compressibility Of Soil
Section: Chapter Questions
Problem 11.15P
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1. A soil has the following profile:
0 – 4 m ∂T = 18.25 kn/m3

very compact sand layer

4 – 10 m ∂T= 18.50 kn/m3

very compact sand, gravel

10 – 16 m ∂T = 17.98 kn/m3

clay layer

a. Determine the settlement of a clay layer if the structure to be built will increase the
soil pressure at the center of clay layer by 80 Kpa. Cc = 0.20, e = 1.15.

ans. 7.03
b. How long will it take for the 95% settlement to occur? Cv = 0.019 m2

/month?

ans. 39.47
c. How much settlement will occur in 6 months?

ans. 0.703

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