A buried clay has the following condition: • The ground is very deep • The thickness of buried clay is 1.8 m • A 2.4 m thick layer of compact sand overlies the clay layer • The unit weight of clay is 15.74 kN/m3 and the unit weight of the sand is 21.24 kN/m3 • The foundation size and loading causes a stress increase of 33.58 kPa at the center of the clay layer • Laboratory testing of the clay indicates the clay is normally consolidated, the soil void ratio is 1.28 a) Compute the compression index if the clay has a liquid limit of 46.66 b) Compute the average effective stress at the mid-height of clay layer. c) Compute the foundation settlement due to primary compression
A buried clay has the following condition: • The ground is very deep • The thickness of buried clay is 1.8 m • A 2.4 m thick layer of compact sand overlies the clay layer • The unit weight of clay is 15.74 kN/m3 and the unit weight of the sand is 21.24 kN/m3 • The foundation size and loading causes a stress increase of 33.58 kPa at the center of the clay layer • Laboratory testing of the clay indicates the clay is normally consolidated, the soil void ratio is 1.28 a) Compute the compression index if the clay has a liquid limit of 46.66 b) Compute the average effective stress at the mid-height of clay layer. c) Compute the foundation settlement due to primary compression
Principles of Foundation Engineering (MindTap Course List)
8th Edition
ISBN:9781305081550
Author:Braja M. Das
Publisher:Braja M. Das
Chapter2: Geotechnical Properties Of Soil
Section: Chapter Questions
Problem 2.14P
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Question
A buried clay has the following condition:
• The ground is very deep
• The thickness of buried clay is 1.8 m
• A 2.4 m thick layer of compact sand overlies the clay layer
• The unit weight of clay is 15.74 kN/m3 and the unit weight of the
sand is 21.24 kN/m3
• The foundation size and loading causes a stress increase of 33.58
kPa at the center of the clay layer
• Laboratory testing of the clay indicates the clay is normally
consolidated, the soil void ratio is 1.28
a) Compute the compression index if the clay has a liquid limit of
46.66
b) Compute the average effective stress at the mid-height of clay
layer.
c) Compute the foundation settlement due to primary
compression
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