The load-carrying capacity of a bored cast in situ pile develops due to

Explanation:

1. Bored cast in situ pile are typically poured in place and transfer the load through end bearing and skin friction.
2. While driven pile are driven straight in and transfer the load through friction and/or bearing.

Important Points

Types of pile:

i) End bearing Pile: Piles which transfer the structural load to a hard and relatively incompressible stratum such as rock or dense sand are known as end-bearing piles. These piles derive the required bearing capacity from end bearing at the tip of the pile.

ii) Compaction piles: These piles are used to compact loose granular soil to increase its bearing capacity. Compaction piles do not carry the load and hence they can be of weaker material. Sand piles can be used as compaction piles.

iii) ) Fender piles and dolphins: Fender piles and dolphins are used to protect waterfront structure from the impact of any floating object or ships.

iv) Anchor piles: These piles are generally used to provide anchorage against horizontal pull from sheet piling.

v) Tension pile: Used to anchor down the structures subjected to hydrostatic uplift forces or overturning forces

vi) Sheet pile: Used for retaining earth or water