A rectangular lite is 42 in. wide and 78 in. high. Glazing stop is needed around all four sides, and the cut list adds 10 percent waste. What stop length should be carried?
Correct Answer
D) 264 in.
The four-side perimeter is 2 × (42 + 78) = 240 inches. Add 10%: 240 × 1.10 = 264 inches, or 22 feet. The 240-inch option omits the allowance; 220 is below the perimeter and 280 adds more than 10%. Stock-length cutting constraints are not supplied.
Why This Is the Correct Answer
The four-side perimeter is 2 × (42 + 78) = 240 inches. Add 10%: 240 × 1.10 = 264 inches, or 22 feet. The 240-inch option omits the allowance; 220 is below the perimeter and 280 adds more than 10%. Stock-length cutting constraints are not supplied.
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