According to the 10 percent rule, how many feet of sag is required for every 200 lbf of load over a 100-foot span?

In the context of the 10 percent rule, which is commonly used in rope rescue scenarios, the rule states that for every 100 feet of horizontal span, a sag of 10% is needed for the load being applied.

If you have a 100-foot span and a load of 200 lbf, applying the 10 percent rule means calculating 10% of the span length. Ten percent of 100 feet is 10 feet. This sag is required to ensure that the system can accommodate the dynamic forces and maintain safety during a rescue operation.

The significance of adhering to this sag is to prevent excessive strain on the rope system and to ensure that the load is distributed safely across the rigging. Proper sag also contributes to the overall stability of the system, allowing for smoother operation during dynamic rescues.

Thus, the reason the answer of 10 feet aligns with the principles of the 10 percent rule is that it accurately reflects the calculated sag needed for a 100-foot span subjected to a load of 200 lbf, ensuring safe and effective rescue operations.