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Message: <blockquote data-quote="Stormonu" data-source="post: 8163890" data-attributes="member: 52734">Wilderness Survival Guide, 1E p36 - "The standard 50-foot coil of rope is is assumed to be somewhat smaller than 1/2 inch in diameter, and a rope of this diameter can support upto 1,500 pounds without being in danger of fraying or breaking. If this weight limit is exceeded, there is a 20% chance per turn (non-cumulative) while the strain remains on the rope that it will break. If the rope does not break, there is a 10% chance, cumulative per turn, that it has become weakened from the stress (10% after one turn, 30% after two turns, 60% after three turns, 100% after four turns). The chance of a weakened rope breaking the next time it is used to support more than its weight limit is 40% per turn (noncumulative)."For mountain climbing and other uses in the wilderness, a longer and stronger rope is often used. A climbing rope is 150 or 200 feet long and 1/2 inch in diameter, with a weight limit of 2,000 pounds. It is also subject to weakening or breaking as described above"</blockquote>