Question

The gross bearing capacity of a footing is $450kN/m^2$. If the footing is 1.5 m wide and is at a depth of 1 m in a clayey soil which has a unit weight of $20kN/m^3$, then the net bearing capacity is

• A. $410kN/m^2$
• B. $420kN/m^2$
• C. $430kN/m^2$
• D. $440kN/m^2$

Answer 1

The correct option is C $430kN/m^2$

Gross bearing capacity
$q_g=450$

Net bearing capacity $=q_g-\gamma \times D_f$

$=450-20\times 1=430kN/m^2$