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In certain situations where driving piling, either as dead men or as foundation piles, is impractical or impossible helical tiebacks or piles may be a good alternative. Helical piles can be installed with relatively small equipment that causes much less disturbance to landscaping and fit in places where pile drivers won’t. Helical piles are installed using a rotary drive and install without the noise and vibration normally associated with pile driving. MMS is a certified installer of, “Hubbell-Chance,” helical pile and tieback systems. These piles/tiebacks can be installed to an Ultimate capacity of 100 Kips (50 tons) each. |
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Advantages helical piles and tiebacks have over conventional piles and dead men.
1. Can be installed without a large excavation. 2. Have a known capacity based on installation Torque. 3. Do not settle (no movement) 4. Can be installed by relatively small equipment (no pile driver, damage to foundations by vibration, or minimal damage to landscaping) 5. Can be installed under, Walls (right), pavement, utilities, structures (basement) |
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When buildings are built on transported soils, and filled land, settling and cracking to the foundations can occur. Helical piles can be installed down below the inadequate soils in to stable material thus supporting the structure. With the use of a foundation Repair brackets MMS can reinforce settling foundation and support entire buildings on helical piles. |
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Once installed helical piles and tiebacks proof tests and performance tests may be done to verify pile capacity. This is done using a hollow bore hydraulic piston that has a calibrated gauge that reads in tons of force and a dial indicator to measure movement. |