Q.

The factor that is responsible for inclination of resultant pressure to the retaining wall is                      

A. frictional force
B. surcharge
C. earth pressure
D. weight of the wall
Answer» A. frictional force
Explanation: the retaining walls are constructed of masonry or concrete, due to this the frictional force develops. the existence of the friction makes the resultant pressure inclined to the wall at an angle that approaches the frictional angle between the soil and the wall.
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