Pre-Drilling for Sheet Pile
One common question we get at Hammer & Steel is whether or not one should pre-drill when driving steel sheet pile.
Conditions that may justify pre-drilling.
- Ground conditions are hard enough to slow production or cause sheets to fan out.
- Ground conditions are too hard for thin sheets and pre-drilling is cheaper than using thicker sheets.
- Using a larger vibro hammer could drive the sheets in but may damage the interlocks or tear the top of the sheets.
- Ground layers are sloped to the extent that sheets want to follow and not stay straight.
Benefits of pre-drilling around the interlocks:
- A reduction in the surface friction and/or tip resistance.
- An increase in production rates.
- A reduction (or avoidance) in damage to sheet piles.
- A straighter pile wall as pre-drilled holes act as guides.
- The ability to see what is in the ground rather than relying on a bore log report.
The multi-purpose ABI Mobilram quickly changes from drill to pile presser and is the ideal piece of equipment for turning these benefits into cost savings for your company.