Steel Push Piers Pier Tube 3.0-inch Outside Diameter (O.D.) x 0.120inch wall tube steel, ultimate tensile strength = 80,000 psi (min.), yield tensile strength = 70,000 psi (min.) Tube Reinforcing Insert 2.75inch O.D. x 0.120inch wall tube steel, ultimate tensile strength = 80,000 psi (min.), yield tensile strength = 70,000 psi (min.) Bracket Tube 3.875-inch O.D. x 3.125-inch Inside Diameter (I.D.) x 10-inch long DOM mechanical steel tubing conforming to ASTM 513 – Type 5 / Grade 1026. Ultimate tensile strength = 100,000 psi (min.), yield tensile strength = 90,000 psi (min.) Angle Bracket 0.5-inch thick flat plate conforming to ASTM A-36 hot rolled steel bent to form a 90 degree angle with equal sides of approximately 8 inches. Ultimate tensile strength = 58,0...