Why are weep holes provided at the back of retaining walls ?

1.	Why are weep holes provided at the back of retaining walls ?
A.	To reduce the active earth pressure on the walls
B.	To reduce the build - up of hydrostatic pressure
C.	To provide better compaction
D.	To increase the passive earth pressure
Answer» C. To provide better compaction

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Why are weep holes provided at the back of retaining walls ?

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