Pile Handling, Leads, and Alignment
What this domain covers
Pile Handling, Leads, and Alignment tests safe picks, lead use, and how to bring a pile to grade without side-loading the rig.
Handling and leads
- Inspect each pile for cracks, spalling, and damaged heads or shoes. Use approved lifting points and slings; protect edges with softeners.
- Control the pile with tag lines. Keep personnel out from under the pile and outside the fall zone.
- Match the lead type to the work: fixed leads for controlled vertical or batter driving, hanging leads where the configuration requires them. Leads must be free to follow the pile and must not be climbed.
- Lower the pile into the leads; do not force it with the hammer. Use the lead spotter and two levels at 90 degrees to check plumb or batter.
Worked example
A 50-ft pile enters the leads but hangs 6 in. out of plumb at the tip. The operator should lower the pile, reposition the leads or the pile, and recheck with levels. Raising the hammer and bumping the pile to persuade it straight imposes a side load on the leads and hammer and can damage the pile head. If the pile cannot be aligned freely, stop and correct the setup.
Traps
Using the hammer to pull a pile into line; riding or climbing leads; standing between the pile and the leads; and checking plumb in only one direction.