A building section drawing shows a detail reference bubble with '7/A-5' inside. What does this notation indicate?
Correct Answer
B) Detail 7 on sheet A-5
The notation '7/A-5' in a reference bubble indicates detail number 7 found on sheet A-5. This cross-referencing system helps users locate detailed drawings throughout the drawing set.
Why This Is the Correct Answer
The notation '7/A-5' follows the standard architectural drawing convention for detail reference bubbles. The number before the slash (7) indicates the detail number, while the designation after the slash (A-5) indicates the sheet where that detail can be found. This cross-referencing system is universally used in construction drawings to help contractors and workers quickly locate specific details throughout the drawing set. Detail reference bubbles are essential navigation tools that prevent confusion and ensure accurate construction.
Why the Other Options Are Wrong
Option C: Section 7 taken at grid line A-5
Section references use different notation and typically show cutting plane lines with arrows indicating viewing direction. Section bubbles would not reference grid lines in this format, and sections are usually numbered differently with their own reference system.
Option D: Room 7 in building phase A-5
Elevation callouts use different symbols and notation systems, typically showing height measurements or finish floor elevations. The format '7/A-5' is not used for elevation references, which would more commonly show actual elevation numbers or relative heights.
Memory Technique
Think 'Detail/Destination' - the detail number comes first, then the slash points you to the destination sheet where you'll find it.
Reference Hint
Look up 'Architectural Drawing Standards' or 'Detail Reference Systems' in construction drawing interpretation guides, typically found in blueprint reading chapters.
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