Question

A strip footing is resting on the ground surface of a pure clay bed having an undrained cohesion $C_u$. The ultimate bearing capacity of the footing is equal to

• A.
  $$2\pi c_u$$
• B.
  $$\pi c_u$$
• C.
  $$(\pi +1)c_u$$
• D.
  $$(\pi +2)c_u$$

Answer 1

The correct option is D

$$(\pi +2)c_u$$
Ultimate bearing capacity on pure clay
$$=c_u{N}_c$$$$=5.14c_u$$$$=(\pi +2)c_u$$