Drilled Piles

Transmission elements (cast “in situ”) of the loads from a structure to a deep stratum with adequate bearing capacity. They are slender foundation elements that are drilled and cast in place, with or without casing protection. They are executed by means of mechanical or hydraulic rotary machines, their diameters ranging from 0.40 m to over 3.0 meters. Once the projected depth is reached, the reinforcement steel is placed; then the pile is cast by means of a Tremie pipe, which is submerged to the bottom of the borehole to continuously pour the concrete from bottom to top.

Individually drilled piles are capable of supporting appreciable loads, depending on these, in each case, on the characteristics of the subsoil. With high-power equipment, recoverable casing linings can be placed to ensure that collapse do not occur when working under the water table or under low compacity soils. By constructing a system of secant piles, watertight retaining walls similar to cast-in-place walls can be created.