A floor drain in an equipment room will rarely receive water and the trap may dry out. What should be checked?
Correct Answer
C) Trap seal protection.
Trap seals must be maintained or protected so sewer gas does not enter the building.
Why This Is the Correct Answer
Trap seals must be maintained or protected so sewer gas does not enter the building.
Why the Other Options Are Wrong
Option A: Drainage from the cavity may be blocked.
Drainage from the cavity may be blocked. addresses a neighboring field issue, but not the condition or method control required for plumbing trap seal protection.
Option B: Test before concealment.
Test before concealment. addresses a neighboring field issue, but not the condition or method control required for plumbing trap seal protection.
Option D: The vent is incomplete.
The vent is incomplete. addresses a neighboring field issue, but not the condition or method control required for plumbing trap seal protection.
Memory Technique
The field condition asks; field-method choice answers in work boots for Reviewing Floor.
Reference Hint
Study anchor (closed-book): memorize cited field requirement from California Plumbing Code, California Code of Regulations Title 24. / Title 24 California Plumbing Code trap seal concepts; know the rule or calculation trigger without relying on exam-room lookup.
More Class B Trade Questions
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