2018-02-12-minutes-cds-study-session

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BUILDING PLANNING illumination of 6 footcandles (65 lux) over the area of the room at a. height of 30 inches (762 mm) above the floor level. 3. Use of sunroom and patio covers, as defined in Sec. tion R202, shall be permitted for natural ventilation if in excess of 40 percent of the exterior sunroorn walls are open, or are enclosed only by insect screening. R303.2 Adjoining rooms. For the purpose of determining light and vent7latlon requirements, any room shall be consid- ered to be a portion of an adjoining room where not less than one-half of the area of the common wall is open and unob- structed and provides an opening of not less than one-tenth of the floor area of the interior room and not less than 25 square feet (2.3 mz). Exception: Openings required for light or ventllation shall be permitted to open into a sunraom with thermal isolation or a patio cover, provided that there Is an openable area between the adjoining room and the sunroom or patio cover of not less than one-tenth of the floor area of the interior room and not less than 20 square feet (2 rn j. The minimum openable area to the outdoors shall be based upon the total floor area being ventilated. R303.3 Bathrooms. Bathrooms, water closet compartments and other similar rooms shall be provided with aggregate glaz- ing area in windows of not less than 3 square feet (0.3 m�, one- half of which must be openable. Exception: The glazed areas shall not be required where artificial light and a local exhaust system are provided. The minimum local exhaust rates shall be determined in accordance with Section M1507. Exhaust air from the space shall be exhausted directly to the outdoors. R303.4 Mechanical ventilation. Where the air infiltration rate of a dwelling unit is 5 air changes per hour or less where tested with a blower door at a pressure of 0.2 inch w.c (50 Pa) in accordance with Section N1102.4.1.2, the dwelling unit shall be provided with whole -house mechanical ventilation in accordance with Section M1507.3. 2. Vents and chimneys serving fuel -burning appli- ances shall be terminated in accordance with the applicable provisions of Chapters 18 and 24. 3. Clothes dryer exhaust ducts shall be terminated in accordance with Section M1502.3. 8.303.5.2 Exhaust openings. Exhaust air shall not be directed onto walkways. R303.6 Outside opening protection. Air exhaust and intake openings that terminate outdoors shall be protected with cor- rosion -resistant screens, louvers or grilles having an opening size of not less than'!, Inch (6 mm) and a maximum opening size of V, inch (13 mm), in any dimension. Openings shall he protected against local weather conditions. Outdoor air exhaust and intake openings shall meet the provisions for exterior wall opening protectives in accordance with this code. R303.7 hiterlor stairway illumination. Interior stairways shall be provided with an artificial light source to illuminate the landings and treads. The light source shall be capable of illuminating treads and landings to levels of not less than i foot-candle (11 lux) as measured at the center of treads and landings. There shall be a wall switch at each floor level to control the light source where the stairway has six or more risers. Exception: A switch is not required where remote, central or automatic control of lighting is provided. R303.7.1 Light activation. Where lighting outlets are Installed In interior stairways, there shall be a wall switch at each floor level to control the lighting outlet where the stairway has six or more risers. The illumination of exte- rior stairways shall be controlled from Inside the dwelling unit. Exception: Lights that are continuously illuminated or automatically controlled. R303.8 Exterior stairway illumination. Exterior stairways shall be provided with an artificial light source located at the 11303.5 Opening location. Outdoor intake and exhaust open- top .Landing of the stairway. F..xterlor stairways providing access to a basement from the outdoor grade Ievel shall be ings shall be located in accordance with Sections R303.5.1 provided with an artificial light source located at the bottom and R303,5.2. landing of the stairway. 8303.5.1 Intake openings. Mechanical and gravity out- R303.8.1 Sunroom additions. Required lazed g openings door air intake openings shall be located not less than 10 shall be permitted to open into sunroom additions or patio feet (3048 mm) from any hazardous or noxious contanmi- covers that abut a street, yard or court if in excess of 40 nant, such as vents, chimneys, plumbing vents, streets, percent of the exterior sunroom walls are open, or are alleys, parking lots and loading docks, enclosed only by insect screening, and the ceiling height For the purpose of this section, the exhaust from dwell- ing unit toilet room7' bathrooms and kitchens shall not be sunrow ds -not. m tharL T feet ,(2134 mm). R303.9.Required considered as hazardous or noxious. heating. Where the winter design tempera - ture in Table R301.2(1) is below 60°F (16* C), every dwelling Exceptions: - unit shall be provided with heating facilities capable of main - 1. The 10 -foot (3048 mm) separation is not required twining a room temperature of not less than 68°F (20aC) at a point 3 feet (914 mm) above the floor and 2 feet (610 mm) where the intake opening is located 3 feet (914 mm) or greater below the contaminant source. from exterior walls in habitable rooms at the design tempera- ture. The installation of one or more portable space heaters shall not be used to achieve compliance with this section. 56 2015 INTERNATIONAL RESIDENTIAL CODE' 1 E Coprdght C x014 SCC. ALL RIGHTS RESERVED. A—Mid by Milted Floryon Mar 4, 2016 4 3 457 1114 PMnl to Llanse Agrermentwith ICC. No fi rtha r.produrtian or dktd; uttan autharl d. ANY UNAUTHORIZED REPRODUCTION ORD1S7R1RMON IS A VIOLATION OP ME FEDERALCOPYRIGNTACT AND nIELICE,NSE AGREEMENT, AND SURJECTTO CIVIL AND CRIMINAL PENALrFS TnrPxbNDm