cohesion piles or friction piles in pile foundation

 Friction or cohesion piles :

cohesion piles or friction piles in pile foundation
cohesion parrying a capacity load is derived mainly from the cohesion or friction of the soil in contact with the shaft of the pile.

Cohesion piles(friction);

  • This type of friction piles transmits most of their load to the soil through skin friction. This process of driving such piles close to each other in groups greatly reduces the porosity and comprehensibility of the soil within and around the groups.
  • This type of piles category is some times called compaction piles. Because of the process of driving the pile into the ground, the soil becomes molded and, as a result, loses some of its strength(friction).
  • This type of pile is not able to transfer the exact amount of load which it is intended to immediately after it has been driven. Normally, the soil regains some of its strength 3- 5 months after it has been driven. 

Friction piles;

cohesion piles or friction piles in pile foundation
Friction pile
 This type of piles also transfers their load to the ground through skin friction. This process is driving such us piles does not compact the soil appreciably. This type of pile foundations is commonly known as floating pile foundations.