Restricted access mini piling

Open Auger Bore

Open auger bored piles are created by drilling sectional solid stemmed auger flights into the ground, the sectional augers are added until the design depth is achieved.

The sectional augers are then withdrawn from the ground removing each auger from the rig as it exits leaving an “open hole”.

Steel reinforcement is then placed before being filled with concrete to complete the pile.

Steel Cased Driven

Steel cased driven piles are created using circular steel casings with a crimped toe. These casings are driven into the ground using an integral weight which is repeatedly dropped from a pre-determined distance onto a dry mix concrete plug in the base of the pile which in turn propels the casing through the surrounding soil.

The Casings are connected together by forming a continuous water tight fillet weld. Once the pile length and set has been achieved the excess steel casing is cut away at ground level, concrete and steel reinforcement is then inserted to complete the pile.

Steel Cased Auger

Steel cased auger piles are created by positioning the auger inside a steel drill casing. The auger and casing are mounted on two independent superimposed rotary heads rotating in opposite directions. The auger and casing are simultaneously screwed into the ground but in opposite directions.

Once the design depth has been achieved the auger flight is lifted with the casings still in place removing the spoil leaving an “open bore”. Steel reinforcement is inserted and the pile is filled with concrete similar to open bore piling. The final process is to remove the steel casings to complete the pile. This method protects the pile from unstable ground or if water encountered.