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Helical
Steel Piers
Brackets
Helix Plates
Shaft Size 1-1/2” sq. 1-1/2” sq. 1-3/4” sq.
Galvanization ASTM A153 ASTM A153 ASTM A153
Material Grade ASTM A576 ASTM A576 ASTM A576
Grade C-1045 Grade 1530M Grade 1530M
Minimum Yield Strength 45 ksi 60 ksi 60 ksi
Minimum Tensile Strength 82 ksi 110 ksi 110 ksi
Ultimate Torque Capacity 6,000 ft-lbs 7,000 ft-lbs 10,000 ft-lbs
Ultimate Capacity (C or T) 70 kips 70 kips 100 kips
Working Capacity (C or T) 35 kips 35 kips 50 kips
Bracket Type Standard Light Duty
Galvanization ASTM A153 ASTM A153
Ultimate Strength 60 kips 15 kips
Working Capacity 30 kips 7.5 kips
Helix Thickness 3/8” & 1/2”
Galvanization ASTM A153
Material Grade ASTM A36
Minimum Yield Strength 36 ksi
Minimum Tensile Strength 58 ksi
All products are hot-dipped galvanized per ASTM A153.