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Nuts ASTM: A 563,including Appendix Xlb <br /> Washers ASTM: F 844 <br /> Components of high-strength <br /> steel fastener assemblies for <br /> use in structural steel joints: <br /> Bolts ASTM: A 325,Type 1 <br /> Tension control bolts ASTM: F 1852,Type 1 <br /> Nuts ASTM: A 563,including Appendix Xlb <br /> Hardened washers ASTM: F 436,Type 1,Circular,including S1 <br /> SUPPlementary requirements <br /> Direct tension indicators ASTM: F 959,Type 325,zinc-coated <br /> Carbon steel for forgings, ASTM: A 668/A 668M,Class D <br /> ins and rollers <br /> Alloy steel for forgings ASTM: A 668/A 668M,Class G <br /> Pin nuts ASTM: A 36/A 36M <br /> Carbon-steel castings ASTM: A 27/A 27M,Grade 65-35,Class 1 <br /> Malleable iron castings ASTM: A 47,Grade 32510 or A 47M,Grade <br /> 22010 <br /> Gray iron castings ASTM: A 48,Class 30B <br /> Carbon steel structural ASTM: A 500,Grade B or A 501 <br /> tubing <br /> Steel pipe(Hydrostatic ASTM: A 53,Type E or S,Grade B;A 106, <br /> testing will not apply) Grade B;or A 139,Grade B <br /> Stud connectors ASTM: A 108 and AASHTO/AWS D1.5 <br /> a Grades that may be substituted for the equivalent ASTM Designation: <br /> A 709 steel,at the Contractor's option,subject to the modifications and <br /> additions specified and to the requirements of A 709. <br /> b Zinc-coated nuts that will be tightened beyond snug or wrench tight <br /> shall be fumished with a dry lubricant conforming to Supplementary <br /> Requirement S2 in ASTM Designation: A 563. <br /> The first sentence of the first paragraph of Section 55-2.02, " Structural Steel," of the Standard Specifications is amended <br /> to read: <br /> • Unless otherwise specified or shown on the plans,all structural steel plates,shapes,and bars shall conform to ASTM <br /> Designation: A 709/A 709M,Grade 50[345]. <br /> The first paragraph in Section 55-3.05, "Flatness of Faying and Bearing Surfaces," of the Standard Specifications is <br /> amended to read: <br /> • Surfaces of bearing and base plates and other metal surfaces that are to come in contact with each other or with <br /> ground concrete surfaces or with asbestos sheet packing shall be flat to within one mm tolerance in 305 mm and to within <br /> 2 mm tolerance overall. Surfaces of bearing and base plates and other metal bearing surfaces that are to come in contact with <br /> preformed fabric pads, elastomeric bearing pads, or mortar shall be flat to within 3 mm tolerance in 305 mm and to within <br /> 5 mm tolerance overall. <br /> Section 55-3.14, "Bolted Connections,"of the Standard Specifications is amended by adding the following after the ninth <br /> paragraph: <br /> • If a torque multiplier is used in conjunction with a calibrated wrench as a method for tightening fastener assemblies <br /> to the required tension, both the multiplier and the wrench shall be calibrated together as a system. The same length input <br /> and output sockets and extensions that will be used in the work shall also be included in the calibration of the system. The <br /> manufacturer's torque multiplication ratio shall be adjusted during calibration of the system,such that when this adjusted ratio <br /> is multiplied by the actual input calibrated wrench reading,the product is a calculated output torque that is within 2 percent of <br /> the true output torque. When this-system is used in the work to perform any installation tension testing, rotational capacity <br /> testing,fastener tightening,or tension verification,it shall be used,intact as calibrated. <br /> The second paragraph of Section 55-3.17, "Welding,"of the Standard Specifications is amended to read: <br /> Contract No. 10-OM7104 <br /> 45 <br />