What is the typical elongation range for dynamic rope under static loading?

• A. 1-3%
• B. 10-20%
• C. 4-10%
• D. 0-1%

Answer: (C)

Dynamic rope is designed to stretch to absorb shocks, so when it’s held static, it elongates by a small amount as the fibers extend and creep settles. That static elongation for typical dynamic ropes falls in a range around 4% to 10% of the rope length, which is why the 4-10% option is the best fit. Values much lower (0-3%) wouldn’t reflect how these ropes behave under sustained load, and values much higher (10-20%) would indicate far more stretch than is typical or specified for standard dynamic ropes. Real-world rope specifics (diameter, age, temperature) can shift the exact number, but 4-10% is the commonly cited range for static loading.