# GATE Questions & Answers of Load capacity of piles in sands and clays

## What is the Weightage of Load capacity of piles in sands and clays in GATE Exam?

Total 3 Questions have been asked from Load capacity of piles in sands and clays topic of Foundation Engineering subject in previous GATE papers. Average marks 2.00.

A 0.5 m × 0.5 m square concrete pile is to be driven in a homogeneous clayey soil having undrained shear strength, cu = 50 kPa and unit weight, γ = 18.0 kN/m3. The design capacity of the pile is 500 kN. The adhesion factor $\style{font-family:'Times New Roman'}\alpha$ is given as 0.75. The length of the pile required for the above design load with a factor of safety of 2.0 is

Two identical concrete piles having the plan dimensions $\style{font-family:'Times New Roman'}{50\;\mathrm{cm}\times50\;\mathrm{cm}}$ are driven into a homogeneous sandy layer as shown in the figures. Consider the bearing capacity factor Nq for 30º as 24.