There is no clear clause from the code if draft stops can be deleted if you are using "Vent-Sprinkler" method. There is no mention there that the draft stops are to be removed.
OK, which code or standard are you referencing and year edition?
I am thinking you are talking about fire sprinklers
And possibly in high pile stock storage??
Your post looks like your topic was about 2018 NFPA 101, Life Safety Code (LSC), Subsection 8.6.11 Concealed Spaces and Draftstops under Chapter 8 Features of Fire Protection; under Section 8.6 Vertical Openings.
Your question: "When are you allowed to delete draft stops in vertical openings?"
Two criteria for mandatory draftstopping in Paragraph 220.127.116.11:
Where are the above mandatory draftstopping required:
What conditions does Paragraph 18.104.22.168 for draftstopping not apply:
My answer: For non-plenum concealed spaces, the concealed spaces in walls and partitions, and for the support of floor or roof structural will most likely not be protected by an approved automatic sprinkler system, therefore draftstops must be install in them. In concealed spaces of unoccupied attics, where the spaces are most likely to be protected by an approved automatic sprinkler system, draftstops may not be installed. Where the HVAC is using the concealed spaces as approved plenums, no draftstopping application are proposed by the LSC. In existing buildings according to Subsection 22.214.171.124 firestopping and draftstopping is to be provided as required by Chapters 11 through 43.
I hope these were the guidance you were looking for.
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