Knot Reference

Common rigging and rescue knots with typical strength reduction.

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Reference

Knots

Details, formula, and sources

(reference page; no compute) Common rigging and rescue knots (figure-eight, bowline, clove hitch, prusik, water knot, double fisherman) with typical strength-reduction percentages from public rope-rescue and arboriculture training materials.

NFPA 1006 / NFPA 1670 by name; National Fire Academy rope rescue training materials (U.S. government, public domain).

NFA training materials free at usfa.fema.gov. NFPA 1006 / 1670 read-only at nfpa.org/freeaccess.

Estimate. AHJ and licensed fire protection engineer govern.

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