What net steel grating area remains after the access hatch opening is deducted?
Correct Answer
B) 204 sf
The net area is the outer rectangle minus the dashed deduction box, or 204 sf.
Why This Is the Correct Answer
The net area is the outer rectangle minus the dashed deduction box, or 204 sf.
Why the Other Options Are Wrong
Option A: 216 sf
This is the full outer rectangle and does not subtract the dashed deduction box.
Option C: 192 sf
This subtracts the deduction box twice.
Option D: 54 sf
This multiplies the full length by only the deduction-box width.
Memory Technique
Net-area hook for steel platform grating net area: big rectangle minus the marked dashed opening.
Reference Hint
Open Sheet S-972; read the outside dimensions and the dashed deduction dimensions.
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