Esorfranki Limited
Incorporating Esor Africa and Franki Africa, Esorfranki Geotechnical is a ‘one-stop geotechnical shop’ - the largest specialist civil and geotechnical contractor in South Africa and the most established in the SSA region. The group offers a full ‘design and construct’ service, while the 2008 acquisition of GCD has boosted market share in the fields of dynamic compaction, soil improvement, micro piling and lateral support.
Gauteng Piling
Since the arrival of the first piling machine in Johannesburg in July 1996, GAUTENG PILING has completed more than 1200 contracts. Our clients are satisfied with the price, quality, as well as the time in which we completed these contracts.
Piovesan & Vesankor (Pty) Ltd
Piovesan & Vesankor specialises in supplying the piling industry in Southern Africa, We offer Reinforcing, Piling Cages, Mesh, Tubing and Structural Steel.
Geo Compaction Dynamics
Geo Compaction Dynamics provides design and constant packages to suite each clients specific requirement. By working with the professional team, the company can assist with the most optimum design thereby providing cost effective solutions.
What is piling ?
Deep foundations are sometimes indicated by geotechnical engineers when soil conditions are poor or a heavy design load needs to be carried.
Piling makes deep foundations possible. Piles are commonly made from reinforced concrete and steel
Common types of piling
Auger Piles
Auger piling is a commonly used piling technique since it is best suited to partially saturated soils. An auger rig drills the piles into place.
Drilling is carried out by rotation of the drilling head and lowering of the auger allowing it to penetrate into the soil. Once the auger flight is full with soil it is withdrawn and spun off. This procedure is repeated until the desired depth is reached.
Once the drilled hole has been completed, a reinforcing cage is lowered down into position. The shaft is then filled with concrete and is vibrated to assist compaction of the liquid concrete.
Continuous Flight Auger (CFA)
CFA is suited to saturated ground conditions where collapse and groundwater are a problem. These piles are installed by means of a hollow continuous flight auger, and drilled into the ground .
When the desired founding level is reached in soil or rock, cement grout is pumped into the hollow stem of the auger. The spoil rising up the auger ensures that soft material cannot fall into the void at the bottom of the rock socket.This also flushes the base of the pile ensuring a clean contact with the bedrock.
The auger is then slowly withdrawn from the ground, bringing the soil held between its flights with it. While grout is simultaneously filling the shaft.
Once the auger has been removed from the grout-filled pile shaft, a steel reinforcement cage is immediately lowered into the liquid grout.
Various sizes and depths are possible according to design
Piling Companies in Eastrand
Sanyati 011 397 7462
Dura Soletanche Bachy 011 226 8400
Esor Africa 011 822 3906
Frank Afica 011 887 2700
Gauteng Piling 011 705 3044
JC Geotechnical Services 011 534 1238