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R2 use group over S2 enclosed parking garage - type of construction

Scott_R

Bronze Member
Joined
Apr 27, 2011
Messages
44
Location
Chicago, IL
Building design using 2006 IBC:

A Mixed-use 4-story R2 apartments over S2 below grade plane basement for private enclosed parking.

Type VA construction, fully sprinklered to increase the 3 stories to 4 (as per table 503 and section 504.2).

Question: can the horizontal separation between the basement/first floor be built in wood frame floor trusses assuming the proper fire rating between the R2 and S2 uses is met? I seem to recall this was allowed (wood floor truss) in previous BOCA code versions, but am unsure in 2006 IBC (section 509.2 and 509.4).

Thanks in advance,

Scott
 
Sorry - should have posted this in commercial building code section which I just did, disregard duplicate post here.

Scott
 
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