Under Reamed Pile primly developed for an area in which black cotton soil may want to motive structural instability. Often, soils go through volumetric changes because of moisture variant beneath the ground floor. The black cotton soil excess shrinkage and expansion belongings can cause misery which could be very dangerous and crucial as long way as the bearing of the foundation is involved.

Under Reamed Pile(below-reamed piles) type developed through C.B.R.I.( critical building studies Institute).The under-reamed piles are made from RCC.This pile type unique feature is an enlarged portion are given at the bottom or at the midpoint that is known as ‘underneath reamed ‘or ‘bulb’.If the pile has one bulb, it's miles known as unmarried reamed,