At the shipping-office break area, during the material-order review, the roof edge zone for ice-and-water membrane covers 51800 SF, with 8% added for laps and cuts. Each roll covers 225 SF. How many rolls are needed?
Correct Answer
D) 249 rolls
Roll count equals adjusted area divided by roll coverage, rounded up.
Why This Is the Correct Answer
Roll count equals adjusted area divided by roll coverage, rounded up.
Why the Other Options Are Wrong
Option A: 230 rolls
230 rolls is below the supported result for ice-and-water membrane; it likely omits allowance, conversion, coverage, or final round-up.
Option B: 262 rolls
262 rolls is above the supported result for ice-and-water membrane; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Option C: 248 rolls
248 rolls is below the supported result for ice-and-water membrane; it likely omits allowance, conversion, coverage, or final round-up.
Memory Technique
Estimator Checks takeoff: count the condition before counting the package Tie the cue to Ice-And-Water Membrane Estimator Checks.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Roofing underlayment; roll coverage; verify the construction method, material quantity, equipment use, unit conversion, or field-control calculation.
More Project Mgmt Questions
The field condition is: the work should be released only if the team addresses that thermal movement must be accommodated. Which coping joint detail best matches the condition?
From the mechanical schedule, what CFM is listed for DOAS-2?
From panel schedule R1, what wire size is shown for circuit R1-5?
A subcontractor asks for direction after noting that the work should be released only if the team addresses that subgrade and aggregate must remain separated. Which geotextile selection best fits the work?
From the specialty item schedule, what height is listed for SP-3?
Using the drawing index, which sheet should you open for the entry wall footing plan?
From the plumbing fixture schedule, what waste size is listed for UR-1?
A Ocala task creates flying-particle exposure because a worker is cutting masonry. Which PPE control is required?
From the light fixture schedule, what mount is listed for L1?
From the loading strip dimension plan, what perimeter length is needed for edge restraint?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass