Technical use ascenders can cut through rope sheaths with loads as low as how much?

• A. 800 lbs
• B. 1,200 lbs
• C. 2,000 lbs
• D. 1,500 lbs

Answer: (B)

Technical use ascenders can cut through rope sheaths at relatively modest loads, around twelve hundred pounds. The rope’s sheath is the outer protective layer and is more vulnerable to abrasion and cutting than the core. When a mechanical ascender grips or slides on the rope, sharp edges or pinch points can nick the sheath. Once the sheath is damaged, the rope’s protective layer is compromised and the rope becomes more prone to failure under load. That’s why you’ll hear emphasis on protecting the rope where it passes through the ascender—use rope protectors or padding, keep routing smooth, and inspect for sheath wear after use. The key point is that sheath damage can begin at about twelve hundred pounds, so proper protection and routing are essential to prevent deterioration.