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Class B TradeCore Tradesmedium29% of exam part

During a rough plumbing walk, a cleanout for a long horizontal waste line is shown behind a fixed cabinet panel. What is the best correction?

Correct Answer

C) Relocate or panel the cabinet so the cleanout remains accessible.

Cleanouts need to remain accessible for service; hiding one behind fixed construction defeats its purpose.

Answer Options
A
Leave the cleanout sealed behind the fixed cabinet panel since it is seldom needed.
B
Extend the cleanout with added fittings so it terminates hidden inside the cabinet.
C
Relocate or panel the cabinet so the cleanout remains accessible.
D
Remove the cleanout entirely because the new waste line should not clog.

Why This Is the Correct Answer

Cleanouts need to remain accessible for service; hiding one behind fixed construction defeats its purpose.

Why the Other Options Are Wrong

Option A: Leave the cleanout sealed behind the fixed cabinet panel since it is seldom needed.

Leave the cleanout sealed behind the fixed cabinet panel since it is seldom needed. addresses a neighboring field issue, but not the condition or method control required for plumbing service access.

Option B: Extend the cleanout with added fittings so it terminates hidden inside the cabinet.

Extend the cleanout with added fittings so it terminates hidden inside the cabinet. addresses a neighboring field issue, but not the condition or method control required for plumbing service access.

Option D: Remove the cleanout entirely because the new waste line should not clog.

Remove the cleanout entirely because the new waste line should not clog. addresses a neighboring field issue, but not the condition or method control required for plumbing service access.

Memory Technique

Plumbing Service Access method for Coordinating Layout: condition first, tool second.

Reference Hint

Study anchor (closed-book): memorize Plumbing service access from 2025 California Plumbing Code, California Code of Regulations Title 24 / Title 24 California Plumbing Code cleanout access; know the rule or calculation trigger without relying on exam-room lookup.

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