What percentage range describes the stretch of a general-use life safety rope under load (1-10%)?

• A. 0-1%
• B. 1-10%
• C. 10-20%
• D. 20-30%

Answer: (B)

When a life safety rope is loaded, it lengthens a bit as the fibers and construction absorb energy. This elongation is a small, controlled amount that serves to cushion the arrest and reduce peak forces. For a general-use life safety rope, you expect only a modest stretch—not negligible, but not excessive. That balance keeps the system predictable: too little stretch means less energy absorption, while too much stretch can lead to greater fall distance and less control. So the best description is a small, noticeable but limited amount of stretch under load.