A rotary piling rig drills the bore, supported where needed by temporary steel casing or a drilling fluid such as bentonite or polymer. The cage is lowered in and concrete is placed from the bottom up through a tremie pipe.
Bored piles are common in the UAE for buildings and infrastructure because they reach large diameters and depths with little vibration. Each one's depth, diameter, casing, concrete and steel are recorded for the engineer and for costing.
How Civova handles it
Civova keeps a record for every pile (design and actual depth, diameter, casing length, cage weight, concrete volume, rig and crew) linked to its BOQ item, so production and cost per pile are live.