Question 12.14: Determine the net allowable bearing capacity of a 10 m × 15 ...
Determine the net allowable bearing capacity of a 10 m × 15 m raft foundation resting on a clay where c_u = 80 kN/m² and D_f = 3 m. Allow a factor of safety of 3.
From Eq. (12.54),
q_{all(net)}=1.713 c_u\left(1+\frac{0.195B}{L}\right) \left(1+0.4\frac{D_f}{B}\right)=1.713(80)\left(1+\frac{0.195\times 10}{15}\right) \left(1+0.4\frac{3}{10}\right)= 173.4 kN/m²
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