Question

A plate load test is conducted on a cohesionless soil using a plate of size $0.6m\times 0.6m$. The settlement of the plate corresponding to ultimate load is 25 mm. What will be the settlement of footing of square shape having 3m dimension on the same soil at same load intensity?

• A. 125 mm
• B. 33.3 mm
• C. 46.5 mm
• D. 14.8 mm

Answer 1

The correct option is C 46.5 mm

$B_P=0.6m,B_f=3m,S_P=25mm,S_f=?$
$S_f=S_P{\left[\frac{B_f(B_P+0.3)}{B_P(B_f+0.3)}\right]}^2$
$=25{\left[\frac{3(0.6+0.3)}{0.6(3+0.3)}\right]}^2$
$=46.5mm$