According to the plumbing symbols on a set of plans, you see 'CW' marked on a pipe. What does this abbreviation indicate?
Correct Answer
D) Cold water
CW is the standard plumbing abbreviation for cold water supply lines. This designation helps distinguish cold water lines from hot water (HW) and other plumbing systems on the drawings.
Why This Is the Correct Answer
CW is the universally accepted standard abbreviation for cold water supply lines in plumbing drawings and specifications. This designation is used consistently across all construction documents to identify pipes that carry potable cold water throughout a building. The abbreviation helps contractors, plumbers, and inspectors quickly identify the type of water service when reading plans, ensuring proper installation and connection to the correct water supply system.
Why the Other Options Are Wrong
Option A: Condensate waste
Condensate waste lines are typically abbreviated as 'CD' or 'COND' on plumbing drawings. These lines carry condensation from HVAC equipment like air handlers and cooling coils. Condensate systems are separate from potable water systems and require different piping materials and installation methods than cold water supply lines.
Option B: Chilled water
Chilled water systems use different abbreviations, typically 'CHW' or 'CHWS' for chilled water supply and 'CHWR' for chilled water return. These systems are found in commercial HVAC applications for air conditioning, not standard plumbing. The single 'CW' designation specifically refers to cold potable water supply, not mechanical cooling systems.
Memory Technique
Think 'CW = Cold Water' - both start with 'C' and 'W'. Also remember the pair: CW (Cold Water) and HW (Hot Water) - they're opposites that go together.
Reference Hint
Florida Building Code - Plumbing, Chapter 6 (Water Supply and Distribution) or standard plumbing symbols reference charts typically found in the appendix
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