What net waterproofing area is shown after the pipe-box opening is deducted?
Correct Answer
A) 804 sf
The net area is the outer rectangle minus the dashed deduction box, or 804 sf.
Why This Is the Correct Answer
The net area is the outer rectangle minus the dashed deduction box, or 804 sf.
Why the Other Options Are Wrong
Option B: 828 sf
This is the full outer rectangle and does not subtract the dashed deduction box.
Option C: 780 sf
This subtracts the deduction box twice.
Option D: 184 sf
This multiplies the full length by only the deduction-box width.
Memory Technique
Net-area hook for below-grade waterproofing field net area: big rectangle minus the marked dashed opening.
Reference Hint
Open Sheet A-942; read the outside dimensions and the dashed deduction dimensions.
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