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Sorry this question is way off the topic of navigation, but I can't seem to
find an answer and maybe this erudite group can point me in the right
direction.

I'm looking for some definitive, original-source data on the strength of
various common knots (bowline, sheet bend, etc) vs the strength of the
original rope itself.

I spent about two hours last night searching the Web for info (including
visiting the Cordage Institute, major rope manufacturers, and lots of Web
sites and newsgroups) and came up empty handed.  Most sites simply assert
that "knots reduce the strength of a rope" but don't give specific
degradation data.  Two or three sites that give specific degradation
factors (claiming, for example, that a bowline reduces rope strength by 15%
to 40%) but the source of the testing is not cited and I fear the info may
be hearsay.

Ditto for Chapmans -- they have a table of knot strengths, but no citation
as to the source of the data or even what sort of rope was tested (I would
expect, for example, that there might be differences between manila and nylon)

Any help would be appreciated.

Thanx

Lu Abel
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