CSLB General Building (B)Planning and EstimatingEasy
A contractor is reviewing a set of blueprints for a new commercial building. He notices a symbol that looks like a circle with an 'X' through it, labeled 'FD'. What does this symbol most likely represent?
- AFloor Drain
- BFresh Air Duct
- CFoundation Detail
- DFire Damper
Show answer & explanationAnswer & explanation
Correct answer: A. Floor Drain
The symbol of a circle with an 'X' through it, especially when labeled 'FD', is a common architectural and plumbing symbol for a floor drain.
Why the other options are wrong
- B. Fresh air ducts are part of the HVAC system and have distinct ductwork symbols.
- C. Foundation details are typically shown in separate sections or elevation views, not as a single symbol like this.
- D. Fire dampers have a different, more specific symbol, often a square with a diagonal line.
Floor Drain Symbol
A common architectural and plumbing symbol on blueprints representing a floor drain.
- Typically a circle with an 'X' through it.
- Often labeled 'FD' for clarity.
- Indicates a point where water drains from the floor surface.
Memory trick: Symbols on a map guide your build, like 'FD' for where water's spilled.