Wet Rope Strength

But again for toproping this isn t an issue.

Wet rope strength.

However when wet it is possible to see as much as a 70 percent reduction in dynamic performance which is important when taking a lead fall see below. In sterling s tests an 11 mm drycore rope held 11 falls dry and seven falls wet. One boater will talk about tensile strength while the other will talk about working load. A wet rope is not dangerously weakened for rappelling compared with a dry rope.

Any bend tighter than 4 reduces the strength of rope because they stress the rope in flexure the fibers weaker direction. Four inches is the magic number for maintaining full strength in a rope up to 5 8. Static strength is most important when rappelling and ropes can have up to a 30 percent strength loss there. Both of these are important measurements and it s worth learning how to measure and understand them.

Manufacturers results for knotted tensile strength throwbag rope values with an overhand knot. Test 1 is the dry test with figure of eight knots. Strength 8 is the min. But a wet nylon rope is also weaker than a dry one.

Rope strength is a misunderstood metric. Each of these measurements has different uses and here we re going to give. However when wet it is possible to see as much as a 70 percent reduction in dynamic performance which is important when taking a lead fall. Strength is the tensile strength from the manufactures specifications without knots.

Test 2 is the wet test with figure of eight knots.