A wire rope rove through two single blocks with two parts at the moving block is used for a boat fall. The weight of the 100-person boat is 5 tons. Compute the required breaking strain. Safety Factor - 6, weight per person - 165 lbs., 10% friction per sheave (2 sheaves).

Correct Answer: Option C — 22.27 tons B.S.

The load on each part is calculated by accounting for the total weight (5 tons) plus the weight of 100 people (16,500 lbs or 8.25 tons), totaling 13.25 tons. Applying the 10% friction loss per sheave and the safety factor of 6 results in a required breaking strain of 22.27 tons.