Attic Draftstopping Residential

The ibc in residential multi family occupancies less than 4 stories in height does not require sprinklers in the attic.

Attic draftstopping residential. 718 4 3 nfpa 13. Sprinklers eliminate the requirement for draftstopping in attics and concealed spaces at 3 000 sq ft. Draftstopping shall be provided in attics mansards overhangs or other concealed roof spaces of group r 2 buildings with three or more dwelling. Well placed windows doors and other openings allow air to circulate without creating.

Sprinklers eliminate the requirement for draftstopping at 1 000 sq ft in floor ceiling assembly 718 3 3 nfpa 13. A well ventilated home is drier healthier and more comfortable. Sprinklerdesigner 2 where s number 1 issue is clearly addressed in the ibc. Draftstopping is required in concealed spaces in type v combustible construction to subdivide attic spaces.

Draftstopping shall be provided in floor ceiling spaces in group r 1 buildings in group r 2 buildings with three or more dwelling units in group r 3 buildings with two dwelling units and in group r 4 buildings. Ventilation of concealed roof spaces shall be maintained in accordance with section 1203 2. Where the attic is fully equipped with an automatic fire extinguishing system the divided horizontal area may be tripled. Individuals that deal mainly with residential construction may get the impression that attics are never sprinklered but the allowance to omit sprinklers from combustible attic spaces is a fairly recent development one that accompanied the 1980s development of special sprinkler installation standards aimed at encouraging low cost protection for dwellings and multiple dwellings.

Ft of floor area. Draftstopping shall be located above and in line with the dwelling unit and sleeping unit separations. In combustible construction draftstopping shall be installed to subdivide attic spaces and concealed roof spaces in the locations prescribed in sections 718 4 2 and 718 4 3. Exit enclosure doors sprinklers delete the maximum transmitted temperature end point for door assemblies.

Draft stops shall be installed in trussed roofs between roof and bottom chord of trusses in all buildings exceeding twenty thousand square feet 20 000 sq.