Wet Rope Strength

But a wet nylon rope is also weaker than a dry one.

Wet rope strength.

A wet rope is not dangerously weakened for rappelling compared with a dry rope. 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. Both of these are important measurements and it s worth learning how to measure and understand them. A wet rope is not dangerously weakened for rappelling compared with a dry rope.

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. Each of these measurements has different uses and here we re going to give. Any bend tighter than 4 reduces the strength of rope because they stress the rope in flexure the fibers weaker direction.

Test 1 is the dry test with figure of eight knots. Rope strength is a misunderstood metric. Static strength is most important when rappelling and ropes can have up to a 30 percent strength loss there. According to sterling rope a non dry treated rope can lose 70 percent of its strength and a dry treated rope can be 40 percent weaker when wet.

Test 2 is the wet test with figure of eight knots. Strength is the tensile strength from the manufactures specifications without knots. Static strength is most important when rappelling and ropes can have up to a 30 percent strength loss there. Manufacturers results for knotted tensile strength throwbag rope values with an overhand knot.

Four inches is the magic number for maintaining full strength in a rope up to 5 8.