During the look-ahead planning meeting at the visitor-center exhibit wall, the stair return run requires 443 LF of handrail tube stock plus 4% waste. Stock comes in 20 ft lengths. How many lengths are required?
Correct Answer
B) 24 lengths
Linear stock count equals required length with waste divided by stock length, rounded up.
Why This Is the Correct Answer
Linear stock count equals required length with waste divided by stock length, rounded up.
Why the Other Options Are Wrong
Option A: 22 lengths
22 lengths is below the supported result for handrail tube stock; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 23 lengths
23 lengths is below the supported result for handrail tube stock; it likely omits allowance, conversion, coverage, or final round-up.
Option D: 25 lengths
25 lengths is above the supported result for handrail tube stock; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Handrail cart for Field Engineer: linear first, stock second, whole units last.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Metals; handrail stock length estimating; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
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