Plumber Red Seal · Question
What is the purpose of a fixture unit (FU) in plumbing code calculations?
A fixture unit is a code-defined value that represents the probable discharge of wastewater from a fixture in a drainage system. It's used to size drainage pipe
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Question: What is the purpose of a fixture unit (FU) in plumbing code calculations?
Answer options:
- To determine the length of vent piping ✅ To quantify the probable discharge in a drainage system
- To calculate the water pressure required
- To measure the volume of a fixture
Correct answer: To quantify the probable discharge in a drainage system
Explanation: A fixture unit is a code-defined value that represents the probable discharge of wastewater from a fixture in a drainage system. It's used to size drainage pipes and establish the capacity of drain and vent systems.
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