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Before you hire: 4 questions to ask

General guidance for any helical pile contractor, not a statement about this company's practices.

  • 1
    Pile designWho engineers the pile layout, and will you get a stamped letter or drawings?
  • 2
    Torque recordsWill they log final installation torque for every pile and give you a copy?
  • 3
    Product & coatingWhich manufacturer and shaft size do they install, and is the steel galvanized?
  • 4
    Permits & warrantyDo they pull permits and book inspections, and what warranty covers the work?

Helical Drilling Inc

Helical Drilling Inc is a geotechnical contractor at 108 West Rd in Londonderry, New Hampshire. Its site gives a main phone of 781-848-2110 and describes ground improvement, deep foundations, earth retention and underpinning services for commercial and infrastructure projects.

Its deep foundation services include helical piles, ductile iron piles, drilled micropiles, STELCOR micropiles and displacement piles. It also offers Geopier ground improvement, rapid impact compaction, secant and sheet pile walls, soil nailing, tiebacks and slope stabilization. Helical piles also appear under underpinning. Pages cover ownership, safety, careers and projects.

This is a commercial and industrial contractor rather than a residential one. To reach the team, use the contact form or the phone listed on the site, 603-434-0525 for the New Hampshire office. Ask which method suits your loads and soils, who provides design and testing, and the minimum project size.