Friction Piling

Definition

Friction piling is a type of load-bearing pile that derives its supporting capacity from the skin friction between the soil and the pile in contact with it.

Purpose

The purpose of friction piling is to support and transfer the load of a structure to the surrounding soil through the frictional resistance along the surface of the pile. This is especially useful in soils where end-bearing piles cannot reach a firm stratum.

Examples of Use

• In soft soil conditions, such as clay or silt, friction piles are used to support buildings and bridges by relying on the friction between the pile surface and the surrounding soil.
• Offshore structures, like oil platforms, use friction piling to achieve stability in underwater sediments.

Related Terms

• End-Bearing Pile: A pile that transfers load to a firm stratum or bedrock at the bottom.
• Pile Foundation: A deep foundation system where long, slender columns are driven into the ground to support loads.
• Driven Pile: A pile that is hammered or vibrated into the ground.

Notes

The design and installation of friction piles must consider soil characteristics and load requirements to ensure adequate frictional resistance. Regular testing and inspection are essential for verifying performance.