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GATE Exam Questions - Engineering

Q1:

Plate bearing test with 20 cm diameter plate on soil subgrade yielded a pressure of 1.25 x 105 N/m2 at 0.5 cm deflection. What is the elastic modulus of subgrade ?

A 56.18 x 105 N/m2

B 22.10 x 105 N/m2

C 44.25 x 105 N/m2

D 50.19 x 105 N/m2

E None.

ANS:E - None.

Deflection = (pressure x area of contact)/E.
0.005 = (1.25 x 10^5 x 0.1)/E.

E = none of the above.