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BUILDING PLANNING SECTION R313 AUTOMATIC FIRE SPRINKLER SYSTEMS R313.1 Townhouse automatic fire sprinkler systems. An automatic residential fire sprinkler system shall be installed in townhouses. Exception: An automatic residential fire sprinkler system shall not be required where additions or alterations, are made to existing townhouses that do not have an automatic residential fire sprinkler system installed. R313.1.1 Design and installation. Automatic residential fire sprinkler systems for townhouses shall be designed and installed in accordance with Section P2904 .or NFPA 13D. R313.2 One- and two-family dwellings automatic fire sys- tems. An automatic residential fire sprinkler system shall be installed in one- and two-family dwellings. Exception: An automatic residential fire sprinkler system shall not be required for additions or alterations to exist- ing buildings that are not already provided with an auto- matic residential sprinkler system. R313.2.1 Design and installation. Automatic residential fire sprinkler systems shall be designed and installed in accordance with Section P2904 or NFPA 131). SECTION R314 SMOKE ALARMS R314.1 General. Smoke alarms shall comply with NFPA 72 and Section R314. R314.1.1 Listings. Smoke alarms shall be listed in accor- dance with UL 217. Combination smoke and carbon mon- oxide alarms shall be listed in accordance with UL 217 and UL 2034. R314.2 Where required. Smoke alarms shall be provided in accordance with this section. R314.2.1 New construction. Smoke alarms shall be pro- vided in dwelling units. R314.2.2 Alterations, repairs and additions. Where alterations, repairs or additions requiring a permit occur, or where one or more sleeping rooms are added or created in existing dwellings, the individual dwelling unit shall be equipped with smoke alarms located as required for new dwellings. Exceptions: 1. Work involving the exterior surfaces of dwell- ings, such as the replacement of roofing or siding, the addition or replacement of windows or doors, or the addition of a porch or deck, are exempt from the requirements of this section. 2. Installation, alteration or repairs of plumbing or mechanical systems are exempt from the require- ments of this section. R314.3 Location. Smoke alarms shall be installed in the fol- lowing locations: 1. In each sleeping room. 2015 INTERNATIONAL RESIDENTIAL CODE° 2. Outside each separate sleeping area in the immediate vicinity of the bedrooms. 3. On each additional story of the dwelling, including basements and habitable attics and not including crawl spaces and uninhabitable attics. In dwellings or dwell- ing units with split levels and without an intervening door between the adjacent levels, a smoke alarm installed on the upper level shall suffice for the adjacent lower level provided that the lower level is less than one full story below the upper level. 4. Smoke alarms shall be installed not less than 3 feet (914 mm) horizontally from the door or opening of a bathroom that contains a bathtub or shower unless this would prevent placement of a smoke alarm required by Section R314.3. R314.3.1 Installation near cooking appliances. Smoke alarms shall not be installed in the following locations unless this would prevent placement of a smoke alarm in a location required by Section R314.3. 1. Ionization smoke alarms shall not be installed less than 20 feet (6096 mm) horizontally from a perma- nently installed cooking appliance. , 2. Ionization smoke alarms with an alarm -silencing switch shall not be installed less than 10 feet (3048 mm) horizontally from a permanently installed cook- ing appliance. 3. Photoelectric smoke alarms shall not be installed less than 6 feet (1828 mm) horizontally from a per- manently installed cooking appliance. R314.4 Interconnection. Where more than one smoke alarm is required to be installed within an individual dwelling unit in accordance with Section R314.3, the alarm devices shall be interconnected in such a manner that the actuation of one alarm will activate all of the alarms in the individual dwelling unit. Physical interconnection of smoke alarms shall not be required, where listed wireless alarms are installed and all alarms sound upon activation of one alarm. Exception: Interconnection of smoke alarms in existing areas shall not be required where alterations or repairs do not result in removal of interior wall or ceiling finishes exposing the structure, unless there is an attic, crawl space or basement available that could provide access for inter- connection without the removal of interior finishes. R314.5 Combination alarms. Combination smoke and car- bon monoxide alarms shall be permitted to be used in lieu of smoke alarms. R314.6 Power source. Smoke alarms shall receive their pri- mary power from the building wiring where such wiring is served from a commercial source and, where primary power is interrupted, shall receive power from a battery. Wiring shall be permanent and without a disconnecting switch other than those required for overcurrent protection. Exceptions: 1. Smoke alarms shall be permitted to be battery oper- ated where installed in buildings without commer- cial power. - G �7