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A comment on Nearly 12M Square Feet of Vacant Office Space in S.F. Parent comment

Re:Nearly 12M Square Feet of Vacant Office Space in S.F by octoberfranklin on Sunday October 25, 2020 @08:01PM (#24891356)
> Concrete separation also acts as fire barriers, which is very important in areas where people will be cooking stuff

Sheetrock (gypsum) can solve this problem if you use enough of it. But that can get expensive.

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Re:Nearly 12M Square Feet of Vacant Office Space in S.F by owowow on Sunday October 25, 2020 @09:14PM (#24891852)
Usually fire code mandates a 2 hour fire rating for each unit, so you end up with two parallel air gapped 2×4 walls that have sufficient sheetrock on the one side facing the unit the wall was built for to get that 2 hour fire rating.
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