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Rope stretch

Does anyone have a chart showing different rope stretch ratings for ropes. Differant manufacturers ropes seem to have very differant amounts of stretch for static line. wondering if anyone has put together a comparrison.

Replies to This Discussion

Permalink Reply by Tim Rhudy on May 9, 2008 at 6:37pm

Static line should only stretch up to 6%. Meaning that the rope should only stretch 6% of it’s length when pulled by 10% of its minimum breaking strength. NFPA 1983 says it should be 1% to 10% when tested by the Cordage Institute Standard CI 1801 Low Stretch and Static Kernmantle Life Safety Rope specifications. I don’t have a copy of that standard.

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