A rated shaft wall has unsealed duct and pipe penetrations after rough trades. What should be installed before cover?
Correct Answer
A) Firestopping.
Penetrations in rated assemblies need approved firestopping or listed systems before concealment.
Why This Is the Correct Answer
Penetrations in rated assemblies need approved firestopping or listed systems before concealment.
Why the Other Options Are Wrong
Option B: Drainage failure.
Drainage failure. may relate to another site control, but it does not remove or guard the firestopping coordination exposure being tested.
Option C: Duct connection.
Duct connection. may relate to another site control, but it does not remove or guard the firestopping coordination exposure being tested.
Option D: Exterior discharge.
Exterior discharge. may relate to another site control, but it does not remove or guard the firestopping coordination exposure being tested.
Memory Technique
Hazard lock for Coordinating Rough: penetrations is the harm, rated is the guard.
Reference Hint
Study anchor (closed-book): memorize cited field requirement from California Building Code, California Code of Regulations Title 24. / Title 24 California Building Code fire-resistance-rated penetrations; know the rule or calculation trigger without relying on exam-room lookup.
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