How to Calculate the Size of the footing

If,
Total Structure Load = 5000 KN

↓ (in Kg)
= 5000 × 101.97
1KN=101.97Kg1 KN = 101.97 Kg1KN=101.97Kg

= 509850 Kg

If, Bearing Capacity of Soils,
= 1800 Kg/m²

Area required for footings ⇒

= \frac{509850}{18000}

=28.325 m^2

Area of 1 footing ⇒

= \frac{28.325}{9}

=3.147 m^2

Size of footing ⇒

Sige of footing = \sqrt{3.1477m}

=1.77m X 1.77m

How to Calculate the Size of the footing