A square concrete pile of dimensions 0.5 m × 0.5 m is driven into a homogeneous clay soil having an undrained cohesion of 50 kPa. The ultimate capacity of the pile is 1000 kN and the adhesion factor is 0.5. Determine the required length of the pile (assuming the bearing capacity factor Nc = 9).

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?