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Hydraulic bursting

This is a method of silent demolition that uses a hydraulic power unit, powered by electricity, diesel or petrol. Holes are drilled in either a straight line or a diamond configuration. The diameter and the spacing of the holes depend on the type of burster being used. Once the holes have been completed the burster head, which has a number of pistons within the block, is inserted in the holes. Pressure applied from the hydraulic power pack via the hoses and the pistons will induce cracks. Providing the burster head is correctly positioned the cracking will follow a plane of weakness to the adjacent hole. The process is repeated until the whole area is fractured and ready for removal. Angle grinders or flame cutters can be used to cut the reinforcing steel.

Further information may be obtained from the Drilling and Sawing Association