Thread: Wall framing
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Unread 01-17-2016, 12:55 PM   #2
wwhitney
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Join Date: Dec 2015
Location: Berkeley, CA
Posts: 1,110
Thanks CX, I see that now: R302.11.1.2 requires fireblocking "horizontally at intervals not exceeding 10 feet". That only applies to "concealed spaces of stud walls or partitions", so it wouldn't apply to an open unsheathed stud wall.

So I don't think there is any code requirement for mid height blocking or sheathing on a bearing stud wall with gravity loads only, even though as you say in plane buckling of the studs could increase deflection of joists bearing on the stud wall.

Of course, I understand that the requirements for a good tile installation exceed code minimum, so mid-height blocking or sheathing is appropriate for a bearing wall supporting tiled floors.

Cheers, Wayne
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