Helical piles, also known as helical piers, are deep foundation underpinning elements constructed using steel shafts with helical flights. The shafts are advanced to bearing depth by turning them into the soil while monitoring torque to calculate the pile capacity.
Helical piles do not excavate or create spoils that need to be removed, and loads can be immediately applied. You can install them in any weather condition, as well as in limited access areas.
A Helical Pier can be thought of as a large screw, which is driven into the ground. It provides stability to the foundation, acting like an anchor. In fact, they are also known in the industry as anchors, piles, and screwpiles. They provide deep foundation solutions for both new construction, and to repair an existing foundation.
| Specification |
| Bar Material |
40Cr or 45# steel API J55 N80 |
| Helix Plate material |
ASTM A36 hot rolled plate |
| helices thickness |
3/8" and 1/2" inch |
| Leading edge |
sharpened |
| Corrosion protection |
ASTM A153 standard for hot dipped zinc coating |
| A better conventional solid steel extra high strength helical screw pile |
|
Welded coupling for greater strength. Eliminates shaft heat damage caused by upset coupling process |
Product name
HIGH QUALITY 2 7/8" PIPE HELICAL FLIGHT
Square Shaft
Consists of solid square shafts, ranging from 1.5″ to 2″. The piles are typically used for ultimate loads between 100 and 650 kN (25-150 kips) but have been tested to loads in excess of 900 kN (200 kips) in unique situations.
Square shaft products are generally used in small to moderate loading applications, and they provide excellent tension resistance. Square shaft piles are able to penetrate dense and cobble-rich soil when compared to their helical pipe pile equivalents, but they have lower resistance to buckling and negligible lateral load resistance.
In applications where tension is the primary consideration, we recommend the Square Shaft Piers. They have several advantages over the typical square shaft anchors.
Square Shaft Advantages:
- Greater yield and Tensile strength
- Patented Cross-bolt Connection
- Increased safety factor
- Higher torque capacity
- Easy to install
- Installs in any season
- Minimal soil disturbance
- Not affected by a high water table
Composition:
- square solid shaft 1 1/2" thru 2″ O.D. typical.
- Solid round cornered Square (RCS), yield strength of grade 70 or 90.
- Ultimate compression/tension axial capacity: 57 to 200 kip.
- Circular tapered plates (helices) are welded to the center of the shaft.
- Helix diameters can range between 6″ - 48″
- with a thickness of 3/8″ - 1″.
- Helix pitch will range from 3″ - 6″
- Hot dipped galvanized per ASTM A123 or bare steel options available
- Coupling bolts are heavy hex bolt as per ASTM A325
- All welding to be done by welders certified of the AWS CODE D1.1
High-Strength 1.5″, Round-Corner Square Shaft with Forged Upset Coupler has a patented alternating helix pattern reduces wobble and improves plumbness and tracking. The true helix shape limits auguring and provides better quality assurance through valid capacity to torque correlations.
Additional information:
| Shaft |
RCSS 1.5″ x 1.5″ ASTM A29 Grade 90 ksi, or Equivalent |
| Helices |
3/8″ Thick, Helix Die-Pressed ASTM A36, or Better 8″, 10″, 12″ & 14″ Diameter Available |
| Coating |
Galvanized (G), Bare Steel (NG), Epoxy Powder Coated (EP) |
| Pitch |
3″ |
| Ultimate Capacity-to-Torque Ratio |
10 ft-1 |
| Maximum Installation Torque |
7,000 ft-lbs |
| Capacity by Torque |
36 Tons Ultimate Capacity 18 Tons Allowable Capacity |
| Structural Capacity |
36 Tons Ultimate Capacity 18 Tons Allowable Capacity |
Helical Torque AnchorsTM may be the preferred solution for your foundation repair project due to these factors:
- Ease of Installation
- Little to No Vibration
- Immediate Load Transfer upon Installation
- Installed Torque Correlates to Capacity
- Easily Load Tested to Verify Capacity
- Installs Below Active Soils
- Installation under any Weather Conditions
- Little to No Disturbance to the Site
Advantages
Solar ground screw anchor is:offset eye helical anchor
1. extremely environmentally friendly and economical, can be recycled.
2. installed in a matter of minutes without digging and concrete.
3. more efficiency, lower cost, low labor strength.
4. operated precisely, flexible during drilling process.
5. no negative effects on landscape, no damaging on surrounding area.
6. long lifetime. Helical Soil Anchors
7. subjected to strict quality assurance, approved by LGA in Germany.
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