Installing a bored pile starts with drilling a vertical hole into the soil, using a bored piling machine. The machine can be outfitted with specially designed drilling tools, buckets, and grabs to remove the soil and rock. Piles can be drilled to a depth of up to 60 meters and a diameter of up to 2.4 meters. The drilling process may include driving a temporary steel cylinder, or sleeve, into the soil. This remains in place in the upper portion of the hole until the pile is poured.
Once the hole is drilled, a structure of reinforcing steel rebar is built and lowered into the hole, then the hole is filled with concrete. The top of the pile may be capped with a footing or pier near ground level to support the structure above.we are using high pressure hydraulic tractors for pile works.