【国外标准】 Standard Specification for Metallic-Coated Steel Wire Rope and Fittings for Highway Guardrail

This specification covers zinc-coated steel wire rope and fittings for use in the construction of highway guardrail. The base metal shall be steel made by any process and shall be of such quality that the finished wire rope and the individual zinc-coated wires shall have the properties as prescribed in this specification. The slab zinc when used for the coating shall be any grade of zinc. The wire ropes shall meet the specified requirements for: (1) mechanical properties including breaking strength and ductility, (2) dimension and construction, and (3) coating weight, adherence, continuity, and uniformity. Guard cable requirements including strands, lay length and coated wire diameter are specified. The individual wires shall be cylindrical in form, of uniform quality, and free of imperfections. Requirements for joints, splices, and fittings as well as rope test specimen are detailed.1.1 This specification covers 3/4 and 1-in. (19 and 25-mm) metallic-coated steel wire rope and fittings for use in the construction of highway guardrail.1.2 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.