When width of foundation is 900 mm, the settlement is found to be 30 mm. Under the same condition, if width of footing is 600 mm, the settlement will be

Question

Question

This question was previously asked in

BPSC AE Paper 5 (Civil) 11 Nov 2022 Official Paper

Answer 1

Calculation

Width of footing (B1)= 900 mm, Settlement of footing (S₁) = 30 mm

Width of footing (B2) = 600 mm, Settlement of plate (S2) = ?

Under the same condition,

considering, Settlement in case of clay is given by

\(\frac{{{S_f}}}{{{S_p}}} = \frac{{{B_f}}}{{{B_p}}}\)

\(\frac{{{S_2}}}{{{S_1}}} = \frac{{{B_2}}}{{{B_1}}}\)

\(S_2= {{600\times 30} \over 900}\)

Sf = 20 mm