The wallboard delivery worksheet shows a ceiling has 960 square feet of drywall area. Using 4-foot by 8-foot sheets, how many sheets are needed before waste?
Correct Answer
A) 30 sheets.
Each sheet covers 32 square feet. The required quantity is 960 / 32 = 30 sheets.
Why This Is the Correct Answer
Each sheet covers 32 square feet. The required quantity is 960 / 32 = 30 sheets.
Why the Other Options Are Wrong
Option B: 28 sheets total.
28 sheets total. is below the supported result for drywall quantity calculation; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 32 sheets total.
32 sheets total. is above the supported result for drywall quantity calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option D: 34 sheets total.
34 sheets total. is above the supported result for drywall quantity calculation; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to sheet, adjust for covers, then let Estimating Board set the finish line.
Reference Hint
Study anchor (closed-book): memorize Drywall quantity calculation from CSLB B General Building Study Guide; California Building Code, Title. / CSLB B General Building Study Guide drywall estimating; know the rule or calculation trigger without relying on exam-room lookup.
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