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Foundation Engineering

Active Pressure -V

A homogeneous...

Question

A homogeneous gravity retaining wall supporting a cohesive backfill is shown in the figure. The lateral active earth pressure at the bottom of the wall is 40 kPa

The maximum weight of the wall (expressed in KN per m length required to prevent it from overturning about its toe (Point P) is

A

120

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B

180

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C

240

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D

360

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Solution

The correct option is A 120

Moment about toe

$F \times 2 = W \times 2$

F = W

$W = F = \frac{1}{2} \times 6 \times 40 = 120 K N$

Weight of wall = 120 kN

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