Screw pile RESTRICTED

concretesteelfoundation

Utilising the Martello Technique, large diameter piles (750/900/1050mm) are able to be constructed to depths of 40.0m to form fully reinforced piles of up to 8.0mN in restricted access and low headroom conditions. Construction Sequence 1. Drill a short pilot hole 2. Install a lead casing and screw into the ground. 3. Excavate soil from within the casing, utilising the Martello Technique, where the auger slides up and down the Kelly bar to remove the spoil. 4. When the pile depth has been reached the depth of the first Kelly bar (2.0m), add an additional length of Kelly bar. 5. Add further lengths to casing in advance of the bore depth 6. Add further lengths of sectional Kelly bar and use the Martello Technique to lower the auger to the base of the bore to excavate spoil. 7. When the bore has reached the design depth, install the pile reinforcement and concrete the pile. 8. Remove the temporary casing. Technical Specifications • Diameter (600mm - 1050mm) • Depths to 40m in 3.5m of headroom • Bearing capabilities to 8.0mN •High lateral load capacity to form secant and contiguous piled walls