Right Time, Right Place For Piercing Tools

April 2013, Vol. 68 No. 4

“The moving-head design of the Hole Hammer piercing tool provides full striking force of the piston to the head of the tool,” says Wage. “This helps the tool pulverize any stone or debris in its path, while the residual energy generated is used to help the tool body travel through the compacted bore path. The design helps improve accuracy in tough soil conditions and reduce tool deflection. The Hole Hammer also has a mechanical reset for the head assembly that helps to ensure that each blow actually compacts the soil in front of the tool; another feature that helps with accuracy.”

Expectations by Dixon are that crew members achieve 400-plus feet of production including excavation, installation and restoration -- per day. “Piercing tools continue to be a low-cost trenchless method for installing short bores in congested infrastructure, on a cost-per-foot operation,” he says. “These tools continue to gain footage as the right approach and given the right situation. For the most part, using piercing tools, you can hardly even tell where you’ve been in a subdivision three or four weeks after completing an installation. There are limitations, of course. But given the right situation, piercing tools are often the most cost-effective and least invasive way to go.”

United Cable Construction, (843) 851-0711
McLaughlin Group, (800) 435-9340, www.mightymole.com
Vermeer Corp., (888) 837-6337, www.vermeer.com