Pipe Jacking is a specialist technique used to install underground pipelines and culverts with minimal disruption to property, traffic or services on the ground surface. Pipes and culverts are progressively advanced through the ground using high performance hydraulic jacks. Material at the head of the pipeline or culvert is excavated to the exact profile of the structure prior to jacking. This material is removed from the jacking pit via the structure being jacked where it is hoisted and stock piled adjacent to the jacking pit. Pipejacking is used for sewers and stormwaters, gas and water mains, electricity and telephone cables, box culverts and subways