The sections deal with draft stops and if they are required or not depending on if the building is sprinkled.
Attic draft stop requirements.
Draftstopping is required as summarized below for combustible attics.
4 1 current code requirements the current code requirements for attic draftstopping are in ibc section 718 4.
There are some points to be made about the draftstoppingrequirements.
Draftstopping is not required in buildings equipped throughout with an automatic sprinkler system in accordance with section 903 3 1 1.
Draftstopping shall be installed in attics and concealed roof spaces such that any horizontal area does not exceed 3 000 square feet 279 m 2.
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In combustible construction where there is usable space both above and below the concealed space of a floor ceiling assembly draftstops shall be installed so that the area of the concealed space does not exceed 1 000 square feet 92 9 m 2 draftstopping shall divide the concealed space into approximately equal areas.
The babcock davis draft stop door is a non rated access door designed to provide access through draft stop spaces in the attic while preventing a back draft from one section of the attic to another.
2 if the assembly isn t concealed an open floor ceiling assembly above a basement draftstoppingisn t required.
Group r 2 o required if three or more dwelling units o draftstopping must be installed to subdivide concealed combustible attic spaces.
Draft stops shall be installed in attics mansards overhangs false fronts set out from walls and similar concealed spaces of buildings having uses other than dwellings or hotels so that the area between draft stops does not exceed 3 000 square feet 279 m and the greatest horizontal dimension does not exceed 60 feet 18 288 mm.
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The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures.
3 if draftstoppingis required the 1 000 sflimit applies but the divided spaces must be approximately equal.
1 if there is no useable space above the assembly an attic or below it a crawlspace draftstoppingisn t required.
Our door provides access through draft stop spaces in the attic while also preventing backdrafts between sections.
