A rated shaft wall has pipe and duct openings left unfinished after rough trades. The approved details require penetration protection and a damper at the duct opening. What must be completed before cover?
Correct Answer
A) The specified firestop systems and required duct damper detail.
Complete the approved penetration protection for each opening before concealment. Match the wall construction and penetrant to its specified firestop system, and provide any damper required by the approved duct detail. Ordinary foam alone does not establish the required performance. Source: https://www.ul.com/sites/default/files/2024-10/Firestop-and-Joint-application-guide-final-draft-4-29-24pm-1.pdf
Why This Is the Correct Answer
Complete the approved penetration protection for each opening before concealment. Match the wall construction and penetrant to its specified firestop system, and provide any damper required by the approved duct detail. Ordinary foam alone does not establish the required performance. Source: https://www.ul.com/sites/default/files/2024-10/Firestop-and-Joint-application-guide-final-draft-4-29-24pm-1.pdf
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