36 Ram Jack helical piers anchor a pump station from the floor of a 42-foot wet well
Straight Line Construction, a Ram Jack dealer, placed 36 helical piers for the Plum Creek Water Reclamation Authority's new reuse pump station in Castle Rock, Colorado, working from the bottom of a 42-foot-deep wet well after a crane lowered an 11,000-pound skid steer into the excavation. Each 3.5-inch-shaft pier was designed for 50 kips allowable and went in to an average depth of about 50 feet, with a minimum torque of 14,300 ft-lbs. Switching to larger 10- and 12-inch helices improved efficiency in dense sand, and the crew finished in four days despite lightning stoppages.
Straight Line Construction, a Ram Jack dealer, placed 36 helical piers for the Plum Creek Water Reclamation Authority's new reuse pump station in Castle Rock, Colorado, working from the bottom of a 42-foot-deep wet well after a crane lowered an 11,000-pound skid steer into the excavation. Each 3.5-inch-shaft pier was designed for 50 kips allowable and went in to an average depth of about 50 feet, with a minimum torque of 14,300 ft-lbs. Switching to larger 10- and 12-inch helices improved efficiency in dense sand, and the crew finished in four days despite lightning stoppages.
Why it matters
For engineers on municipal work, it shows high-capacity helical piers can be installed and torque-verified inside a deep, confined excavation where a drill rig would struggle to fit.
Related on Helical Pile USA
Source: Straight Line Construction (Ram Jack Colorado). Summary written by the Helical Pile USA editorial team.
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