MS175B Helical Pier | 52.5 Ton Ultimate – 26.3 Ton Allowable Capacity
High-Strength 1.75″, Round-Corner Square Shaft with Forged Upset Coupler has a patented alternating helix pattern reduces wobble and improves plumbness and tracking. A true helix shape limits auguring and provides better quality assurance through valid capacity to torque correlations. With a 45-degree miter pilot point aiding pier positioning and advancement, The patented MAGNUM? Dual-Cutting Edge helical bearing plates (DCE) enhance penetration through dense soils with occasional cobbles and debris. The sharpened edge on each helix allows slicing through problem soils.
Additional information
Shaft | |
---|---|
Helices | 3/8" Thick, Helix Die-Pressed ASTM A36, or Better 8", 10", 12" & 14" Diameter Available |
Coating | |
Pitch | 3" |
Ultimate Capacity-to-Torque Ratio | 10 ft-1 |
Maximum Installation Torque | 10,500 ft-lbs |
Capacity by Torque | 52.5 Tons Ultimate Capacity 26.3 Tons Allowable Capacity |
Structural Capacity | 58.7 Tons Ultimate Capacity 29.3 Tons Allowable Capacity |
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.