Nineteen steel deck sheets each cover 31 sq ft. What total coverage is available before waste?
Correct Answer
B) 589 sq ft
Total coverage is 19 x 31 sq ft = 589 sq ft.
Why This Is the Correct Answer
Total coverage is 19 x 31 sq ft = 589 sq ft.
Why the Other Options Are Wrong
Option A: 558 sq ft
steel deck coverage, choice a: 558 sq ft is off by 31 from the checked result 589 sq ft because it misuses the 31 item (steel deck sheets each cover 31 sq ft).
Option C: 620 sq ft
steel deck coverage, choice c: 620 sq ft is off by 31 from the checked result 589 sq ft because it misuses the 31 item (steel deck sheets each cover 31 sq ft).
Option D: 650 sq ft
steel deck coverage, choice d: 650 sq ft adds an extra unstated add-on/subtraction; the numeric gap is 61.
Memory Technique
Picture a panel space labeled steel deck coverage: finish every operation before accepting 589 sq ft.
Reference Hint
Open Steel Construction Manual, 15th Ed.; Steel Deck Institute and Steel Joist Institute standard practice; use the index entry or section for "Deck quantity calculation" to confirm that Total coverage is 19 x 31 sq ft = 589 sq ft.
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