Question

A square footing for a column carries a total Load (including the self-weight of footing) of 1760 KN. The safe bearing capacity of soil is 200 kN/m². Using M 20 grade concrete and Fe415 steel, the area of footing (rounded to the nearest integer) will be
1. 9 m²
2. 2 m²
3. 25 m²
4. 16 m²

Answer 1

Correct Answer - Option 1 : 9 m²

Concept:

The area of footing (A_f) is given by

\(\rm A_f = \rm\frac{{Total~ load}}{{{Safe ~bearing ~capacity}}}\)

Calculation:

Given:

Total load = 1750 kN, Safe bearing capacity = 200 kN/m²

\(\rm A_f = \rm\frac{{Total~ load}}{{{Safe ~bearing ~capacity}}}\)

\(A_f = \frac{{1760}}{{200}} = 8.8\;{m^2} \approx9 m^2\)