Helical Pile
Helical Pile
Helical Pile

MH429Y Helical Piles 99 Ton Ultimate – 50 Ton Allowable Capacity

Round shafts found in the MH429Y Helical Piles, offer increased lateral and buckling resistance compared to square shafts. Patented alternating helix pattern reduces wobble and improves plumbness and tracking. 45-degree miter pilot point aids pile positioning and advancement. Patented MAGNUM? Dual-Cutting Edge helical bearing plates (DCE) enhance penetration through dense soils with occasional cobbles and debris. Sharpened edge on each helix slices through problem soils. True helix shape limits auguring and provides better quality assurance through valid capacity to torque correlations.

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Description

Helical piers shall be installed to appropriate depth into suitable bearing stratum as determined by geotechnical engineer or local practice. Capacity by torque is based on advancing pier to maximum installation torque. A minimum factor of safety of 2.0 is recommended for determining allowable capacity from correlations with final installation torque. Deflections of 0.5" are typical at allowable capacity; a higher factor of safety may be required to achieve smaller deflections. For tension capacity, helical bearing plates must be deeply embedded (5 ~ 7 x ave. helix diameter or as specified by geotechnical engineer).
Load tests are recommended when practical.

Additional information

Shaft

Helices

1/2" Thick, Helix Die-Pressed ASTM A36, or Better 10", 12", 14", 16", 20 & 24" Diameter Available
Coating

Pitch

3"
Ultimate Capacity-to-Torque Ratio

5.7 ft-1
Maximum Installation Torque

34,900 ft-lbs
Capacity by Torque

99 Tons Ultimate Capacity 50 Tons Allowable Capacity
Structural Capacity

120 Tons Ultimate Capacity 60 Tons Allowable Capacity

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