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UPSC Civil Service Exam Questions

Q1:

In a cohesionless soil deposit having a unit weight of 1.5 t/m3and an angle of internal friction of 30° the active and passivelateral earth pressure intensities (in t/m2) at a depth of 10 m will, respectively, be

A 15 and

B 5 and 15

C 10 and 20

D 20 and 10

ANS:B - 5 and 15

@All.

Here's my soltion.
Pa = Y * Ka * H.
= 1.5 * .33 * 10.
= 5.

Pp = Y * Kp * H.
= 1.5 * 3 * 10.
= 45.



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