In a detail drawing showing a wall section, what does the designation '2/A-3' typically refer to?
Correct Answer
D) Detail number 2 on sheet A-3
The notation '2/A-3' indicates detail number 2 found on sheet A-3. This is the standard format for referencing details in construction drawings.
Why This Is the Correct Answer
The notation '2/A-3' follows the standard architectural drawing convention where the number before the slash indicates the detail number, and the designation after the slash indicates the sheet where that detail can be found. In this case, detail number 2 is located on sheet A-3. This referencing system allows architects and contractors to quickly locate specific details throughout the drawing set by providing both the detail identifier and its sheet location.
Why the Other Options Are Wrong
Option A: Scale of 2 inches equals A-3 feet
This misinterprets the notation as a scale indicator. Drawing scales are expressed differently, such as '1/4"=1'-0"' or '1:50'. The slash in '2/A-3' is not indicating a mathematical relationship between measurements but rather separating the detail number from the sheet reference.
Option B: Second revision of detail A-3
This confuses detail references with grid line systems. Grid lines are typically labeled with letters and numbers (like A-3) and shown on floor plans, but the '2/' prefix indicates this is a detail callout, not a grid zone reference. Grid references don't use the number/letter format shown here.
Memory Technique
Remember 'Detail/Sheet' - the number before the slash is the Detail number, the designation after is the Sheet location. Think 'D/S' for Detail/Sheet.
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