Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 3 (Q.No. 41)
41.
The total active thrust on a vertical wall 3m high retaining a horizontal sand backfill (unit weight γt = 20 kN/m3, angle of shearing resistance φ' = 30°) when the water table is at the bottom of the wall, will be:
Discussion:
2 comments Page 1 of 1.
SL Meghwar said:
1 decade ago
Active thrust = 1/2(ka*H^2*yt).
Ka = 1-sin30/1+sin30 = 0.333.
= 1/2(0.333*3^2*20).
= 30 kN/m.
Ka = 1-sin30/1+sin30 = 0.333.
= 1/2(0.333*3^2*20).
= 30 kN/m.
Berhane said:
1 decade ago
Y*H*sin30 = 20kN/m3*3*.5 = 30kN/m.
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