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<br />Section R314 Smoke Alarms:
<br />R314.1 General:
<br />Smoke alarms shall comply with NFPA 72 and Section R314
<br />R314.1.1 Listinias-
<br />Smoke alarms shall be listed in accordance with UL 217. Combination smoke and carbon monoxide
<br />alarms shall be listed in accordance with UL 217 and UL 2034,
<br />R314.2 Where required:
<br />Smoke alarms shall be provided in accordance with this section.
<br />R314.2,1 New construction:
<br />Smoke alarms shall be provided in dwelling units.
<br />R314.2.2 Aiterations, repairs and additions:
<br />Where alterations, repairs or additions requiring a permit occur, the individual dwelling unit shall be
<br />equipped with smoke alarms located as required for new dwellings.
<br />Exceptions:
<br />1.'VVork involving the exterior surfaces of dwellings, such as the replacement of roofing or
<br />siding, the addition or replacement of windows or doors, or the addition of a porch or deck.
<br />2. Installation, alteration or repairs of plumbing or mechanical systems.
<br />R314.3 Location:
<br />Smoke alarms shall be installed in the following locations:
<br />1. In each sleeping roorn.
<br />2. Outside each separate sleeping area in the immediate vicinity of the bedrooms.
<br />3. On each additional story of the dwelling, including basements and habitable attics and not
<br />including crawl spaces and uninhabitable attics. In dwellings or dwelling units with split levels and
<br />without an intervening door between the adjacent levels, a smoke alarm installed on the upper level
<br />shall suffice for the adjacent lower level provided that the lower level is less than one full story below
<br />the upper level.
<br />4. Snnoke alarms shall be installed not less than 3 feet (914mm) horizontally from the door or
<br />opening of a bathroom that contains a bathtub or shower unless this would prevent placement of a
<br />smoke alarm required by Section R314.3.
<br />R314.3.1 Installation near cooking appliances:
<br />Smoke alarms shall not be installed in the following locations unless this would prevent placement of a
<br />smoke alarm in a location required by Section 13314.3.
<br />1. Ionization smoke alarm,; shall not be installed less than 20 feet (6096mm) horizontally from a
<br />permanently installed cooking appliance.
<br />2. Ionization smoke alarms with an alarm -silencing switch shall not be installed less than 10 feet
<br />(3048mm) horizontally from a permanently installed cooking appliance.
<br />3. Photoelectric smoke alarms shall not be installed less than 6feet (1828mm) horizontally from
<br />a permanently installed cooking appliance.
<br />R314.4 Interconnection:
<br />Where more than one smoke alaral is required to be installed within an individual dwelling unit in
<br />accordance with Section R314.3, the alarm devices shall be Interconnected in Such a manner that the
<br />actuation of one alarm will activate all of the alarms in the individual dwelling unit. Physical
<br />interconnection of smoke alarms shall not be required where listed wireless alarms are installed and all
<br />alarms sound upon activation of one alarm.
<br />R314.5 Combination alarms:
<br />Combination smoke and carbon monoxide alarms shall be permitted to be used in lieu of smoke alarms.
<br />R314.6 Power source:
<br />Smoke alarms shall receive their primary power from the building wiring where such wiring is served
<br />from a commercial source and, where primary power is interrupted, shall receive power from a battery.
<br />Wiring shall be permanent and without a disconnecting switch other than those required for
<br />overcurrent protection.
<br />Exceptions.
<br />1. Smoke alarms shall be permitted to be battery operated where installed in buildings without
<br />commercial power.
<br />2. Smoke alarms installed in accordance with Section 13314.2.2 shall be permitted to be battery
<br />powered.
<br />R314.7 Fire alarm systems:
<br />Fire alarm systems shall be permitted to be used in lieu of smoke alarms and shall comply with Sections
<br />R314.7.1 through R314.7.4.
<br />11314.7.1 General:
<br />Fire alarm systems shall comply with the provisions of this code and the household fire warning
<br />equipment provisions of NFPA 72. Smoke detectors shall be fisted in accordance with UL 268.
<br />11314.7.2.1ocation:
<br />Smoke detectors shall be installed in the locations specified in Section R314.3.
<br />R314.7.3 Permanent fixture:
<br />Where a household fire alarm system is installed, it shall become a permanent fixture ofthe occupancy,
<br />owned by the homeowner.
<br />R314.7.4 Combination detectors,
<br />Combination smoke and carbon monoxide detectors shall be permitted to be installed in fire alarm
<br />systems in lieu of smoke detectors, provided that they are listed in accordance with UL 268 and UL 2075.
<br />Section R315 Carbon Monoxide Alarms:
<br />1131S.1 General:
<br />Carbon monoxide alarms shall comply with Section R315.
<br />R31SAA-Ustings:
<br />Carbon monoxide alarms shall be listed in accordance with UL 2034. Combination carbon monoxide and
<br />smoke alarms shall be listed in accordance with UL 2034 and UL 217.
<br />R315,2 Where required:
<br />Cat -bon monoxide alarms shall be provided in accordance with Section sR315.2.1 and R315.2.2
<br />R315.2.1 New construction:
<br />For new construction, carbon monoxide alarms shall be provided in dwelling units where either or both
<br />of the following conditions exist.
<br />1. Tile dwelling unit contains a fuel -fired appliance.
<br />2. The dwelling unit has an attached gat -age with an opening that communicates with the
<br />dwelling unit.
<br />R315.2.2 Aiterations, repairs and addictions:
<br />Where alterations, repairs or additions requiring a permit occur, or where one or more sleeping rooms
<br />are added or created in existing dwellings, the individual dwelling unit shall be equipped with carbon
<br />monoxide alarms located as required for new dwellings.
<br />Exceptions:
<br />1. Work involving the exterior surfaces of dwellings, such as the replacement of roofing or
<br />siding, or the addition or replacement of windows or doors, or the addition of a porch or deck.
<br />2. Installation, alteration or repairs of plumbing or mechanical systems.
<br />R315.3 Location:
<br />Carbon monoxide alarms in dwelling units shall be installed outside of each separate sleeping area in the
<br />immediate vicinity of the bedrooms. Where a fuel -burning appliance is located within a bedroom or its
<br />attached bathroom, a carbon monoxide alarm shall be installed within the bedroom.
<br />R315.4 Combination alarms
<br />Combination carbon monoxide and smoke alarms shall be permitted to be used in lieu of carbon
<br />monoxide alarms.
<br />R315.5 Interconnectivitv
<br />Where more than one carbon monoxide alarm is required to be installed within an individual dwelling
<br />unit in accordance with Section R315.3, the alarm devices shall be Interconnected in such a manner that
<br />the actuation of one alarm will activate all of the alarms in the individual dwelling unit. Physical
<br />interconnection of carbon monoxide -alarms shall not be required where listed wireless alarms are
<br />installed and all alarms sound upon activation of one alarm.
<br />Exception:
<br />Interconnection of carbon monoxide alarms in existing areas shall not be required where alterations or
<br />repairs do not result in removal of interior wall or ceiling finishes exposing the structure, unless there is
<br />an attic, crawl space or basement available that could provide access for interconnection without the
<br />removal of interior finishes.
<br />11315.6 Power source:
<br />Carbon monoxide alarms shall receive their primary power from the building wiring where such wiring is
<br />served from a commercial source and, where primary power is interrupted, shall receive power from a
<br />battery. Wiring shall be permanent and without a disconnecting switch other than those required for
<br />overcurrent protection.
<br />Exceptions:
<br />1. Carbon monoxide alarms shall be permitted to be battery operated where installed in
<br />buildings without commercial power.
<br />2. Carbon monoxide alarms installed in accordance with Section R315.2.2 shall be permitted to
<br />be battery powered.
<br />R315.7 Carbon monoxide detection systems -
<br />Carbon monoxide detection systems shall be permitted to be used in lieu of carbon monoxide alarms
<br />and shall comply with Sections 133115.6.1 through 13315.6.4.
<br />R315.7.1 General:
<br />Household carbon monoxide detection systems shall comply with NFPA 720. Carbon monoxide
<br />detectors shall be listed in accordance with UL 2075.
<br />R315.7.2 Location:
<br />Carbon monoxide detectors shall be installed in tile locations specified in section R315.3. These
<br />locations supersede the locations specified in NFPA 720.
<br />R315.7.3 Permanent fixture:
<br />Where a household carbon monoxide detection system is installed, it shall become a permanent fixture
<br />of the occupancy and owned by the homeowner.
<br />R315.7.4 Combination detectors:
<br />Combination carbon monoxide and smoke detectors shall be permitted to be installed in carbon
<br />monoxide detection systems in lieu of carbon monoxide detectors, provided that they are listed in
<br />accordance with UL 2075 and UL 268.
<br />R307. I Attic Access:
<br />Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas
<br />that have a vertical height of 30-inches (762mm) or greater over an area of not less than 30-square feet
<br />(2.8 m2). The vertical height shall be measured from the top of the ceiling framing members to the
<br />underside of the roof framing members.
<br />The rough -framed opening shall be not less than 22-inches by 30-inches (559mm by 762mm) and shall
<br />be located in a hallway or other location with ready access. Where located in a wall, the opening shall be
<br />not less than 22-inches wide by 30-inches high (559mm wide by 762mm high). Where the access is
<br />located in a ceiling, minimum unobstructed headroom in the attic space shall be 30-Inches (762mm) at
<br />some point above the access measured vertically from the bottom of ceiling framing members. See
<br />Section M1305,13 for access requirements where mechanical equipment is located in attics,
<br />N1102.5 (11402.5) Maximum fenestration U-factor and SHGC (Mandatory):
<br />The area -weighted average maximum fenestration U-factor permitted using tradeciffs from Section
<br />N1102.1.5 or 1\11105 shall be 0.48 in Cl"rnote Zones 4 and 5 and 0.40 In Climate Zones 6 through 8 for
<br />vertical fenestration, and 0.75 in Climate Zones 4 through 8 for skylights. The area-vureighted average
<br />maximum fenestration SHGC permitted using tradeoffs frorn Section N1105 in Climate Zones I through
<br />3 shall be 0.50.
<br />N1103.1 (R403.11 Controls (Mandatory):
<br />Not less than one thermostat shall be provided for each separate heating and cooling system.
<br />N1103.3.5 (11403.3.5) Building cavities (Manciatory):
<br />Building framing cavities shall not be used as ducts or plenums.
<br />N1103.4 (11403.4) Mechanical system piping insulation (Mandatory):
<br />Mechanical system piping capable of carrying fluids above 105'F (41'C) or less than 55'F (18'C) shall be
<br />insulated to an 11-value of not less than R-3.
<br />IV1103.4.1 (R403.4.1) Protection of piping insulation:
<br />Piping insulation exposed to weather shall be protected from damage, including that caused by sunlight,
<br />moisture, eqtqpment maintenance and wind. The protection shall provide shielding from solar radiation
<br />that can cause degradation of the material. Adhesive tape shall not be prohibited.
<br />N1103.6 (R403.6) Mechanical ventilation (Mandatory):
<br />The building shall be provided with ventilation that complies with the requirements of Section M1507 or
<br />with other approved means of ventilation. Outdoor air intakes and exhausts shall have automatic or
<br />gravity dampers that close when the ventilation system is not operating.
<br />N1103.6.1 (R403.6.1) Whole -house mechanical ventilation system fan efficacy:
<br />Fans used to provide whole -house mechanical ventilation shall meet the efficacy requirements of Table
<br />N 1103.6.1.
<br />Exception: Where an air handler that is integrate to tested and listed HVAC equipment is used to
<br />provide whole -house mechanical ventilation, the air handler shall be powered by an electronically
<br />commutated motor.
<br />N1104 (R4Z4) Electrical power and lighting systems (Mandatory):
<br />N1104.1 (R404.1) Lighting equipment (Mandatory):
<br />Not less than 90 percent of permanently installed lighting fixtures shall contain high -efficacy lamps.
<br />N11047.1.1 (R404,1,1) Lighting equipment (Mandatory):
<br />Fuel gas lighting systems shall not have continuously burning pilot lights.
<br />TABLE M1505.4.3(1)
<br />CONTINUOUS WHOLE -HOUSE MECHANICAL VENTILATION SYSTEM AIRFLOW RATE REQUOREMENTS
<br />DINELLING UNIT
<br />NUMBER OF BEDROOMS
<br />FLOOR AREA
<br />0-1 2-3 4-5- 6-7 >'
<br />(square feet)
<br />In CFM
<br />< 1,500
<br />1 11501_1000
<br />30
<br />45
<br />45
<br />60
<br />-Airflow
<br />60
<br />75
<br />-75
<br />90
<br />90
<br />105
<br />3,001 - 4,500
<br />60
<br />75
<br />90
<br />105
<br />120
<br />4,501 - 6,000
<br />75
<br />90
<br />105
<br />120
<br />135
<br />6,001 - 7,500
<br />90
<br />105
<br />120
<br />135
<br />150
<br />> 7,500
<br />105
<br />120
<br />135
<br />150
<br />165
<br />For SI: 1 squa re foot = 0.0929 rn', 1 cubic foot per minute = 0.0004719 ml/s.
<br />TABLE M1505.4.3(2)
<br />MCIF ml;rwawirai %IFNTH ATinm RATF r-ArTtnRcab
<br />RUN-MME PERCENTAGE IN EACH 4-HOUR
<br />I
<br />25%
<br />33%
<br />50%
<br />66%
<br />75%
<br />100%
<br />SEGMENT
<br />Factor'
<br />4
<br />3
<br />2
<br />1 1.5
<br />1.3
<br />1 _J
<br />a. For ventilation system run time values between those given, the factors are permitted to be determined by interpolation.
<br />b. Extrapolation beyond the table is prohibited.
<br />AREA TO BE EXHAUSTED EXHAUST RATES
<br />Kitchens 100 cfm intermittent or 25 cfm continuous
<br />Bathrooms-Toi let Rooms Mechanical exhaust capacity of 50 cfm
<br />I i ntermi ttent or 20 cfm coati nuous
<br />For SI: I cubic foot per minute =0.0004719 rnl/s.
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<br />Code References
<br />Drovin
<br />Douglas Almond
<br />Clcsie
<br />07/11/2021
<br />Project 0.
<br />21-043-01
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