For setups using fiber blocks, the recommended maximum number of line parts is:

For setups using fiber blocks, the recommended maximum number of line parts is:

• A. 6
• B. 10
• C. 8
• D. 12

Answer: (C)

Line parts are the number of rope segments that share the load in a pulley block. Each part helps distribute the force, but increasing the number of parts also increases wear, heat, and the demands on the rope and block hardware. For fiber blocks, eight line parts is the recommended maximum because this number balances providing enough mechanical advantage with staying within the rope’s and block’s rated capabilities. At eight parts, the rope maintains safe tension levels per strand, the rope grooves and the sheave handle the load reliably, and the hardware remains within its design margins. Going beyond eight parts would push the system toward higher wear and risk of rope damage or failure, while fewer parts underutilize the block’s capacity. So the best answer is eight line parts.

Line parts are the number of rope segments that share the load in a pulley block. Each part helps distribute the force, but increasing the number of parts also increases wear, heat, and the demands on the rope and block hardware. For fiber blocks, eight line parts is the recommended maximum because this number balances providing enough mechanical advantage with staying within the rope’s and block’s rated capabilities. At eight parts, the rope maintains safe tension levels per strand, the rope grooves and the sheave handle the load reliably, and the hardware remains within its design margins. Going beyond eight parts would push the system toward higher wear and risk of rope damage or failure, while fewer parts underutilize the block’s capacity. So the best answer is eight line parts.