3381.1SCOPE
Provide wire rope and accessory fittings for use in cable guardrail construction.
3381.2REQUIREMENTS
Provide wire rope and fittings for proprietary high-tension cable guardrail systems meeting the manufacturer’s specifications. Provide wire rope and fittings for low-tension cable guardrail meeting the requirements of AASHTO M 30 Standard Specification for Metallic-Coated Steel Wire Rope and Fittings for Highway Guardrail, and the following: A Wire Rope Requirements Provide wire rope meeting the requirements of Type 1 with Class A coating unless otherwise specified.
B Fitting Requirements Unless the manufacturer specifies otherwise, provide bolts and nuts used to assemble the guardrail elements meeting the requirements of ASTM A307, Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60,000 psi Tensile Strength. Provide bolt heads and nuts with dimensions meeting the requirements of ANSI No. B 18.2 for the type shown on the Plans. Use externally threaded fittings including end tie rods, anchor rods, post loops, and splicing studs that transmit direct tensile stress having a tensile strength of at least 75,000 psi. Use internally threaded fittings such as turnbuckles, cable sockets, and nuts capable of withstanding a proof load equal to 85 percent of the proof load requirements for nuts as specified in ASTM A307, Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60,000 psi Tensile Strength, Table III. Use expansion assemblies, cable splices, and connections capable of withstanding a proof load equal to the tensile strength required of the attached wire rope cable or as specified by the manufacturer. Provide steel rectangular plate washers and cable clamps with a tensile strength of at least 60,000 psi. Provide ferrous metal plain circular washers meeting the requirements of ANSI/ASME B 18.22.1, Type A.
3381.3SAMPLING AND TESTING
Provide samples for testing as directed by the Engineer. The Engineer will test wire rope and fittings for cable guardrail meeting the requirements of AASHTO M 30.
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