In frozen ground, a pile can be driven normally after the ground is warmed using a proprietary heating rod.
Dave Northup In frozen ground, a pile can be driven normally after the ground is warmed using a proprietary heating rod.

I'm intrigued by helical coil technology, but everyone I've spoken to says they're more money than conventional concrete. Wondering if someone with experience could speak to their cost for new construction vs. Sonotubes. —cdservices, Boston

Helical pile, not "coil." On face value, the cost of the concrete and tube are minimal and are way cheaper than any helical pile. But when you factor in the time to excavate, cost to relocate spoils and/or backfill, time to wait for an inspection, time to place the concrete, time waiting for concrete to cure, and the fact that you have...

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