ASTM International has announced a new A741 – 11 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.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
This specification covers 3/4 and 1 inches (19 and 25-mm) metallic coated steel wire rope and fittings for use in the construction of highway guardrail.
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.
