Question

In a plate load test on sandy soil, the test plate of 60 cm $\times$ 60 cm undergoes a settlement of 5mm at a pressure of $12\times {10}^{4}N/m^2$. What will be the expected settlement of $3m\times 3m$ footing under same pressure ?

• A. 25mm
• B. 20mm
• C. 15mm
• D. 9mm

Answer 1

The correct option is D 9mm

$S_p=5.0mm:B_p=0.6m:B_f=3m$

$S_f=S_p\times {\left(\frac{B_f(B_P+0.3)}{B_P(B_f+0.3)}\right)}^2$

$\therefore S_f=5\times {\left(\frac{3(0.6+0.3)}{0.6(3+0.3)}\right)}^2$

= 9.3 mm