What is pile foundation and types of piles?

A Pile Foundation is one type of slender structural member made of steel, concrete, wood, or composite material. A Piles may be cast-in-situ excavating a hole and filling it with concrete or precast concrete member which is driven into the soil. There are different Types of Pile Foundation used in construction.

What is pile foundation used for?

Atkinson, 2007). Pile foundations are principally used to transfer the loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth, increasing the effective size of a foundation and resisting horizontal loads.

Why do we use pile foundations?

Pile foundations are principally used to transfer the loads from superstructures, through weak, compressible strata or water onto stronger, more compact, less compressible and stiffer soil or rock at depth, increasing the effective size of a foundation and resisting horizontal loads.

How is pile foundation constructed?

Bored Pile Construction Process The construction starts by drilling a vertical hole into the soil using the bored piling machine. The piles drilled can go up to a depth of 60 m and a diameter of 2.4 m. A temporary steel cylinder or sleeve is inserted into the drilled hole until the pile is poured.

How do pile foundations work?

When it comes to drilled pile foundations, the piles will be cast into the desired position. The pile casing is typically driven into earth or the ground and filled with concrete and reinforcement to arrive at the cast-in-situ pile. The other method involves an auger that is hollow stemmed that drills into the ground.

Why are piles used in construction?

Piles are pushed into the ground to act as a steady support for structures built on top of them. Piles transfer the loads from structures to hard strata, rocks, or soil with high bearing capacity. The piles support the structure by remaining solidly placed in the soil.

What is pile design?

The design of pile foundation involves providing adequate pile type, size, depth, and number to support the superstructure load without excessive settlement and bearing capacity failure. The resistance to the applied structural load is derived mainly from the frictional resistance developed at the soil–pile interface.

What are pilings used for?

Piling is used in the construction of buildings, bridges and other projects when the soil at the job site isn’t able to support the weight necessary for the structure at shallow depth.

Is pile foundation a code?

Following are the Indian Standard Codes on Pile Foundations: IS 2911 : Part 1 : Sec 1 : 1979 Driven cast in-situ concrete piles. IS 2911 : Part 1 : Sec 2 : 1979 Bored cast-in-situ piles. IS 5121 : 1969 Safety code for piling and other deep foundations.

What are the needs and functions of pile foundation?

What are the Needs and Functions of Pile Foundation? Soil Condition Types of Loads acting on the foundation The bottom layers of the soil The site conditions Operational Conditions

What conditions require use of pile foundation?

When to Use Pile Foundation? When you find that the groundwater table is quite high; When heavy and non uniform loads from the superstructure are employ; It is not feasible to use other types of foundation either due to cost or non-feasibility; When the soil at shallow depth is compressible;

How do piles work with Foundation?

Piles perform two functions that work together with your foundation: Foundation repair experts can install piles in the ground using hydraulics . The piles take on the majority of a sinking foundation’s burden. Once installed, a hydraulic jack will push the beams toward the surface, raising and releveling your home.

What are the advantages bored pile foundation?

The main advantages of bored piles include: Piles of variable lengths can be extended through soft, compressible, or swelling soils into suitable bearing material. Piles can be extended to depths below frost penetration and seasonal moisture variation. Large excavations and subsequent backfill are minimized. Less disruption to adjacent soil occurs.