Crane Mounted CFA - Single Stroke

Video Transcription

Video Summary

David Zanketa explains how Birmingham designed a lead-system package for a deep continuous-flight-auger (CFA) piling project in Kelowna, British Columbia. The job required 262 piles, each 750 mm wide and up to 48 metres deep, for two downtown towers. A conventional drill rig could not install the piles in a single stroke, making auger extensions and concrete-pumping interruptions impractical.<br /><br />The team selected an H36 lead, which met the required depth and rotary torque capacity and was already available to the contractor. Crane-stability modelling showed that an LR 1300 provided a more practical working range than smaller alternatives. Because lifting the long lead vertically posed challenges, the crew used a hinged setup and raised it in stages.<br /><br />The presentation also outlines how lead systems can enable deeper CFA, soil-mixing, and ground-improvement work while reducing noise and vibration in urban areas.

Keywords

CFA piling

lead system

Kelowna construction

auger extensions

crane stability

deep foundations