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The depth of tension cracks in a soft clay (ϕu = 0) is
- A\(\frac{{4{c_u}}}{\gamma}\)
- B\(\frac{{2{C_u}}}{\gamma}\)
- C\(\frac{{{C_u}}}{\gamma}\)
- D\(\frac{{{C_u}}}{{2\gamma}}\)
Answer not set
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0
CCommunity
$({p_a} = {k_a}\gamma Z - 2{c_u}\sqrt {{k_a}} )$
Let Zc = Depth of tension crack
At Z = Zc, pa = 0
$(\therefore 0 = {k_a}\gamma {Z_c} - 2{c_u}\sqrt {{k_a}} )$
$(\therefore {Z_c} = \frac{{2{c_u}}}{{\gamma \sqrt {{k_a}} }})$
For ?u = 0, ka = 1
∴ Depth of tension crack
$({Z_c} = \frac{{2{c_u}}}{\gamma })$
Let Zc = Depth of tension crack
At Z = Zc, pa = 0
$(\therefore 0 = {k_a}\gamma {Z_c} - 2{c_u}\sqrt {{k_a}} )$
$(\therefore {Z_c} = \frac{{2{c_u}}}{{\gamma \sqrt {{k_a}} }})$
For ?u = 0, ka = 1
∴ Depth of tension crack
$({Z_c} = \frac{{2{c_u}}}{\gamma })$
0
CCommunity
As per the condition of soft clay the answer is
Option B
Option B