Page 23 - Bob Holtzman "The Field Guide to Knots How to Identify.."
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The safe working load of most rope is printed on the package. It’s usually considerably lower than the
breaking strength
“Breaking strength” is the load at which a rope breaks under laboratory
conditions, when brand new and under steadily increasing load. This figure may
not be readily available to the consumer, but working load—the maximum load
to which the manufacturer recommends the rope be subjected—is usually printed
on the packaging, or on the reel in stores where rope is sold by the foot or meter.
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