On plumbing drawings, what does the symbol 'FD' typically indicate?
Correct Answer
B) Floor drain
On plumbing drawings, 'FD' is the standard abbreviation for floor drain. This symbol indicates where floor drains are located in the building design.
Why This Is the Correct Answer
FD is the universally accepted standard abbreviation for 'Floor Drain' on plumbing drawings and blueprints. This symbol appears on floor plans to indicate the exact location where floor drains will be installed. Floor drains are essential plumbing fixtures that collect water from floors in areas like basements, laundry rooms, mechanical rooms, and commercial kitchens. The FD symbol helps contractors understand drainage requirements and proper installation locations during construction.
Why the Other Options Are Wrong
Option A: Fire department connection
Flow detector would typically be abbreviated as 'FLD' or 'FLOW DET' on drawings, not 'FD'. Flow detectors are fire protection devices that monitor water flow in sprinkler systems.
Option C: Fixture drain
Fixture drain is not a standard term represented by 'FD' on plumbing drawings. Individual fixture drains are usually shown with specific symbols for each fixture type (sink, toilet, etc.) rather than a generic 'FD' abbreviation.
Memory Technique
Think 'FD = Floor Drain' - both words start with the same letters as the abbreviation. Picture water on a floor going down the drain to remember this connection.
Reference Hint
Florida Building Code - Plumbing, Chapter 7 (Sanitary Drainage) and standard plumbing symbol charts in construction drawing references
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