Piling Closely allied to our underpinning division, our sub division of piling rigs are capable of working inside an existing building for underpinning. In addition, these rigs are particularly suited to restricted access sites for new piling works, smaller development projects and the like. 150mm, 200mm, 250mm and 300mm 250mm diameter augered piles 250mm Hollow stem C.F.A. piles 105mm, 150mm Grundomat bottom driven steel cased piles 150mm, 220mm Drop hammer steel cased piles D.T.H. core drilling Pin piling of existing floor slabs Driven and bored angle piling