+1 vote
in Geotechnical Engineering II by (93.7k points)
For a saturated clay cu=18KN/m^2, find the height of tension cracks is 7m. Find the saturated unit weight.

(a) 43 KN/m^3

(b) 98 KN/m^3

(c) 18 KN/m^3

(d) 86 KN/m^3

The question was asked in semester exam.

Query is from Earth Pressure Problems in section Failure Envelopes & Earth Pressure of Geotechnical Engineering II

1 Answer

0 votes
by (243k points)
The correct choice is (c) 18 KN/m^3

Best explanation: Given,

cu=18 KN/m^2

zo= 2m

we know that, \(Z_0=\frac{2c_u}{γ_{sat}} \)

\(γ_{sat}=\frac{2c_u}{Z_0}=\frac{2×18}{2}=18\)KN/m^3.

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