What term describes the ratio of the strength of a bent rope to its nominal strength rating?

What term describes the ratio of the strength of a bent rope to its nominal strength rating?

• A. Tension Factor
• B. Bending Efficiency
• C. Load Factor
• D. Safety Factor

Answer: (B)

When a rope is bent, its strength isn’t the same as when it’s straight. The ratio of the rope’s strength in the bend to its nominal, straight-strength rating is called bending efficiency. This value shows how much strength the rope retains when wrapped around a pulley or anchor; a gentle bend with a large radius keeps efficiency high (near 1.0), while a tight bend reduces efficiency as stresses concentrate at the bend. For example, if the nominal strength is 100 units and the bent rope can carry 85, the bending efficiency is 0.85. This concept helps you judge whether a bend is acceptable in rigging. The safety factor describes how much stronger the rope would need to be to reach failure under working conditions, not how bending lowers strength, and the other terms aren’t standard ways to express this bending effect.

When a rope is bent, its strength isn’t the same as when it’s straight. The ratio of the rope’s strength in the bend to its nominal, straight-strength rating is called bending efficiency. This value shows how much strength the rope retains when wrapped around a pulley or anchor; a gentle bend with a large radius keeps efficiency high (near 1.0), while a tight bend reduces efficiency as stresses concentrate at the bend. For example, if the nominal strength is 100 units and the bent rope can carry 85, the bending efficiency is 0.85. This concept helps you judge whether a bend is acceptable in rigging. The safety factor describes how much stronger the rope would need to be to reach failure under working conditions, not how bending lowers strength, and the other terms aren’t standard ways to express this bending effect.