During the pre-installation review, the field issue is that the project condition shows that rated penetrations will be concealed. Which firestopping condition is the best match?
Correct Answer
A) Use listed firestopping system
listed firestopping system best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why This Is the Correct Answer
listed firestopping system best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why the Other Options Are Wrong
Option B: Use intumescent collar for plastic pipe
Use intumescent collar for plastic pipe may relate to another site control, but it does not remove or guard the penetration firestopping exposure being tested.
Option C: Use firestop mortar at a large opening
Use firestop mortar at a large opening may relate to another site control, but it does not remove or guard the penetration firestopping exposure being tested.
Option D: Use mineral wool safing with listed sealant
Use mineral wool safing with listed sealant may relate to another site control, but it does not remove or guard the penetration firestopping exposure being tested.
Memory Technique
If Foreman Selecting can still reach the worker, the control is decoration.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Fire-resistance methods; penetration firestopping before concealment; verify the construction method, material selection, equipment choice, or work sequence that fits the field condition.
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