Crane Mounted CFA - Single Stroke - Deeper-PPT Presentation

PPT Presentation

Pdf Summary

The presentation examines the equipment needed to install 750 mm CFA piles to depths of up to 48 m in a single stroke for a Kelowna project. The piles weigh 287 lb/ft and are spaced 2.2 m apart. A BAT 360 rotary drive, rated at 360 kNm (265,000 ft-lb), was available.<br /><br />A traditional drill rig was not suitable because the client’s maximum BG36 rig could reach only 29 m in a single stroke, short of the required 48 m depth. The presentation compares three lead options: the H25, reaching up to 42 m; the H28, up to 65.5 m; and the H36, up to 70 m. The H36 was selected as capable of meeting the required length and torque and being readily available.<br /><br />Crane stability and the ability to loft the selected lead were also key constraints. The Liebherr LR 1300 was chosen for its stability, reach, and availability. The presentation includes crane-capacity considerations at different pile radii and concludes that the selected crane and lead could be lofted successfully.

Keywords

CFA piles

Kelowna project

750 mm piles

BAT 360 rotary drive

360 kNm torque

BG36 rig

H36 lead

Liebherr LR 1300

crane stability

single-stroke installation