.A raft foundation 60 X 40 m carrying a net pressure of 145 kN/m^2 is located at a depth of 4.5 m below the surface in a deposit of dense sandy gravel 22 m deep: the water table is at a depth of 7 m. Below the sandy gravel is a layer of clay 5 m thick which, in turn, is underlain by dense sand. The value of mv for the clay is 0.22 m^2/ MN. Determine the settlement below the centre of the raft, the corner of the raft and the centre of each edge of the raft, due to consolidation of the clay.
.A raft foundation 60 X 40 m carrying a net pressure of 145 kN/m^2 is located at a depth of 4.5 m below the surface in a deposit of dense sandy gravel 22 m deep: the water table is at a depth of 7 m. Below the sandy gravel is a layer of clay 5 m thick which, in turn, is underlain by dense sand. The value of mv for the clay is 0.22 m^2/ MN. Determine the settlement below the centre of the raft, the corner of the raft and the centre of each edge of the raft, due to consolidation of the clay.
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN:9781337705028
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter9: Settlement Of Shallow Foundations
Section: Chapter Questions
Problem 9.6P
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1.A raft foundation 60 X 40 m carrying a net pressure of 145 kN/m^2 is located at a
depth of 4.5 m below the surface in a deposit of dense sandy gravel 22 m deep: the
water table is at a depth of 7 m. Below the sandy gravel is a layer of clay 5 m thick
which, in turn, is underlain by dense sand. The value of mv for the clay is 0.22 m^2/
MN. Determine the settlement below the centre of the raft, the corner of the raft
and the centre of each edge of the raft, due to consolidation of the clay.
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