A subfloor area totals 1,200 sf. Standard 4 ft by 8 ft panels are used, and the order includes an 8 percent cutting allowance. What panel count should be ordered?
Correct Answer
D) 41 panels
One panel covers 32 sf. Adjusted area is 1,200 x 1.08 = 1,296 sf; 1,296/32 = 40.5, so 41 panels are required. Other choices omit the allowance, round down, or add too much material.
Why This Is the Correct Answer
One panel covers 32 sf. Adjusted area is 1,200 x 1.08 = 1,296 sf; 1,296/32 = 40.5, so 41 panels are required. Other choices omit the allowance, round down, or add too much material.
Why the Other Options Are Wrong
Option A: 38 panels
panel count, choice a: 38 panels counts a different spacing, panel, or repeated member quantity.
Option B: 39 panels
panel count, choice b: 39 panels is wrong because 39 panels counts a different spacing, panel, or repeated member quantity.
Option C: 44 panels
panel count, choice d: 44 panels counts a different spacing, panel, or repeated member quantity.
Memory Technique
Say the panel count rule aloud as a chain; the chain ends at 41 panels, not an intermediate stop.
Reference Hint
Open Carpentry and Building Construction, 2016; use the index entry or section for "Wood structural panel quantity takeoff" to confirm that One panel covers 32 sf.
More NASCLA Questions
Bid instructions require bid security with each sealed bid. Which purpose should the estimator associate with that requirement?
A wood deck surface has 320 sf of coverage. Boards have a 5-1/2 in. actual face width, and the order includes an 8 percent cutting allowance. What linear footage is closest?
Using the dimensions shown for the stabilized construction entrance, what is the plan area?
A reroof area requires 14,720 sf of rigid insulation. Boards are 4 ft by 8 ft, and the order includes 5 percent waste. How many boards are needed?
Two addenda revise the drawings before bid day. What must a responsive bidder normally do with those addenda?
A utility trench is 180 ft long, 3 ft wide, and 7 ft deep with vertical sides inside a trench shield. What excavation volume is required?
A 120 ft long Type C trench is cut with a 4 ft bottom width and a 6 ft depth. If side slopes are 1-1/2 horizontal to 1 vertical, what excavation volume is closest?
A storm pipe run needs 240 ft of bedding, 4 ft wide and 6 in. thick. Including a 10 percent ordering allowance, how many cubic yards of bedding aggregate are needed?
A mass excavation produces 1,180 loose cubic yards of material for off-site disposal. End-dump trucks can haul 18 loose cubic yards per trip. What truck count is required?
An asphalt-shingle roof has a slope of 3:12. Under the IBC low-slope asphalt-shingle provisions, what underlayment arrangement is required?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass