Negative skin friction occurs when:

Negative skin friction occurs when:
| Negative skin friction occurs when:

A. Soil is very loose.

B. Soil is very dense.

C. Pile settles more than the settlement of the surrounding soil.

D. End bearing friction is more.

Please scroll down to see the correct answer and solution guide.

Right Answer is: A

SOLUTION

Negative Skin Friction:

  • Negative skin friction is a phenomenon that arises from a settlement of soil in the vicinity of a pile
  • The soil deforming around the pile tends to pull the pile downwards thus reducing its bearing capacity for a given pile settlement
  • This happens when the soil around the pile is a soft or very loose and it reduces the load carrying capacity of the pile
  • Lowering of groundwater table also results in negative skin friction

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