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Soil Mechanics and Foundation Engineering

Q1:

The ultimate Settlement of a soil is directly proportional to:

A depth of the compressible soil strata

B compressive index

C void ratio

D both (a) and (b)

E none of these.

ANS:D - both (a) and (b)

In the case of compression index means e-eo.

So ultimate settlement directly proportional to both compression index and void ratio. Sc = Cc *(H/1+e) * log( Po/Pi).

Whe re
Sc= settlement.
Cc=compression index.
H=depth.
Po=present effctv ovrbrdn prsr.
Pi=Po+additional stress.
e= void ratio. Not void ratio b'coz void ratio is inversely proportional to the ultimate settlement. And the question asks about directly proportional, so, depth and compression index are the answer.



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