Question

Consider the following statements:
1. In the case of footings on purely cohesive soils, the benefit due to surcharge or depth of foundation is only marginal.
2. The bearing capacity of a footing in pure clay may be increased by increasing its size.
3. Factor of safety should be applied only to the net ultimate bearing capacity.
which of the above statements are correct ?

• A. 1, 2 and 3
• B. 1 and 2 only
• C. 2 and 3 only
• D. 1 and 3

Answer 1

The correct option is D 1 and 3

In case of footings on purely cohensive soils

$q_{nu}=C{N}_c$

Therefore the benefit due to surchaege or depth of foundation is only marginal. Moreover, the bearing capacity is independent of the size of footing