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Foundation Engineering

Active Pressure -V

Given that c ...

Question

Given that $c = 2 t / m^{2}, ϕ = 0^{\circ}$ and $γ = 2 t / m^{3},$ the depth of tension crack developing in a coh3esive soil backfill would be

A

1 m

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B

2 m

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C

3 m

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D

4 m

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Solution

The correct option is B 2 m
Depth of tension crack,
$Z_{c} = \frac{2 c}{γ \sqrt{K_{a}}}$
$F o r ϕ = 0; K_{a} = 1 ∴ Z_{c} = \frac{2 \times 2}{2} = 2 m$
The unsupported depth, $H_{c} = 2 Z_{c}$

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