Question

Negative skin friction in a soil is considered when the pile is constructed through

• A. Dense coarse sand
• B. Dense fine sand
• C. Fill material
• D. Over consolidated stiff clay

Hint:

For pile foundation design, be mindful of the effects of negative skin friction, particularly when piles are installed in fill material.

Answer 1

The Correct Option is C

Negative skin friction occurs when the surrounding soil settles after the pile is placed, causing resistance against the pile. This is more likely to occur when the pile is installed in fill material or loose soils that settle over time. Hence, the correct answer is Fill material.