The Indian standard IS 2911 also gives the specification for Timber piles and under reamed piles. The driven piles are displacements piles whereas bored piles are non-displacement piles. Depending upon the diameter of the piles, they are -
- Large diameter piles - greater than 600mm
- Small diameter piles - 300mm to 600mm
- Mini piles - 150mm to 250mm
- Micro piles - less than 150mm
During the installation of piles, the construction engineers have to keep in mind the following points -
- Pile driving causes disturbances to the surrounding areas. The noise of hammering is very troublesome.
- When pre-cast or cast-in-place piles are driven in soil, a volume equal to the volume of penetration of the pile is displaced. If the pore water pressure is not dissipated, then ground heave takes place because there will not be a volume change.
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