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Soil Mechanics and Foundation Engineering - Engineering

Q1:

If the back fill is having a uniform surcharge of intensity q per unit area, the lateral pressure will be

A q times the lateral pressure within the surface

B 1/q times the lateral pressure within the surface

C equal to a fill of height Z equal to q/r, where r is the density of the backfill

D none of these.

ANS:C - equal to a fill of height Z equal to q/r, where r is the density of the backfill

Z is the equivalent ht of backfill giving the same effect as that of surcharge.

Ka r Z = ka q.
Z = q/r, where z is the equivalent ht n r is the density.