MacDonald Contracting Australia is experienced in supplying, drilling and installing anchors to tower crane bases and concrete tower booms. This includes stressing and certification of the anchors. We can also de-stress the anchors after the crane or concrete tower boom has been dismantled.

Installing crane base and concrete tower boom anchors would typically involve:

  • Fabricating anchor tendons, strands or bars
  • Comprehensive grout strength sample testing with an independant laboratory report
  • Drilling the holes for the anchors. Drill-hole diameter and depths as shown on structural drawings
  • Installing and grouting anchor tendons
  • Grouting between the foundation slab and underside of the crane bearing plates
  • Tensioning anchors to the required load and lock off with use of a calibrated jack and gauge combination
  • Providing a conformance certificate upon completion