2109 MCDOUGALL AVE 2018-01-02 MF Import

BUILDING PLANNING lot. Projections beyond the exterior wall shall not extend over the lot line. R302.2 Openings. Openings shall not be permitted in the exte- rior wall of a dwelling or accesse y building with a fire separa- tion distance less than 3 feel (914 mm). This distance shall be measured perpendicular to the Zinc used to determine the fire separa:ion distance. Exceptions: 1. Openings shall be permitted in walls that arc perpen- dicular to the line used to determine the fireseparation distance. 2. Foundation vents installed in compliance with this code are permitted. R302.3 Penetrations. Penetrations located it the exterior wall of a dwelling with a tire separation distance less than 3 feet (914 mm) shall be protected in accordance with Section R317.3. Exception: Pcnetmlions shall be permitted in walls that are perpendicular to the line used to determine the fire scpara- tion distance. SECTION R303 LIGHT, VENTILATION AND HEATING R303.1 habitable rooms. All habitable moms shall be pro-vided with aggrcgaic glazing area of not Icss than 8 percent of the floor area of such rooms. Natural ventilation shall be through windows, doors, louversor olherapprovcd openings to the outdoor air. Such openings shall be provided with ready ac- ccss or shall otherwise be readily controllable by the building occupants. The minimum openable area to the outdoors shall be 4 percent of the noor area being ventilated. Exceptions: I. The glazed areas need not be openable where the opening is not required by Section R310 and an ap- proved mechanical ventilation system is provided ca- pable of producing 0.35 air change per hour in the room or a whole -house mechanical ventilation sys- tem is installed capable of supplying outdoor ventila- tion air of 15 cubic feel per minule (cfm) (7.08 Us) per occupant computed on the basis of two occupants for the first bedroom and one occupant foreach addi- tional bedroom. 2. Thcglazcdareas neednolbeprovided inroomswhcre Exception I above is satisfied and artificial light is provided capable of producing an average illumina- tion of 6 footcandles (6.46 lux) over the area of the room at a height of 30 inches (762 mm) above the floor level. R303.2 Adjoining rooms. For the purpose of determining light and ventilation requirements, any room shall be consid- ered as a portion of an adjoining room when at least one-Ital f of the areaofthe common wall is open and unobstructed and pro- vides an opening of not less than ono -tenth of the floor area of the interior room but not less than 25 square feet (2.32 in' . 44 Exception: Openings required for light :aid/or vemil:uion shall be permitted to open into a thermally isolated sunroom addition or patio cover, provided that them is an openable area between the adjoining room and the sunroom addition or patio cover of not less than one -tenth of the floor area of the interior room but not less than 20 square feet (1.86 m2). The minimum openable area to the outdoors shall be based upon the mod 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 feel (0.279 m°), one-half of which must be openable. Exception: The glazed areas shall oot be required where ar- tificial light and a mechanical ventilation system arc pro- vidcd. The minimum ventilation rates shall be 50 cfm (23.6 US) for intermittent ventilation or 20 cfm (9.4 Us) for con- tinuous ventilation. Ventilation air from the apace shall be exhausted directly to the outside. R303.4 Opening location. Outdoor intake and exhaust open- ings shall be located in accordance with Sections R303A.1 and R303.4.2. R303.4.1 Intake openings. Mechanical and gravity out- door air intake openings shall be located a minimum of IO feet (3048 man) from any hazardous or noxious contami- nant, such as vents, chimneys, plumbing vents, streets, al- Icys, parking lots and loading docks, except as otherwise specified in this code. Where a source of contaminant is lo- cated within 10 feet (3048 mm) of an intake opening, such opening shall be located a minimum of 2 feet (610 mail be- low the contaminant source. Forth- purpose of this section, the exhaust from dwelling unit toilet rooms, bathrooms and kitchens shall not he con- sidered as hazardous or noxious. R303.4.2 Exhaust openings. Outside exhaust opermgs shall be located so as not to create a nuisance. Exhaust air shall not be directed onto walkways. R303.5 Outside opening protection. Air exhaust and intake openings that terminate outdoors shall be protected with corrosion -resistant screens, ]covers or grilles having a mini- nmm opening size of 11, inch (6.4 mm) and a maximum opening size of V2 inch (12.7 ram), many dimension. Openings shall be protected against local wealhercondilions.Outdoor air exhaust and intake openings shall meet the previsions for exterior wall opening protectives in accordance with this code. R303.6 Stairway illumination. All interior and exterior stair- ways shall be provided with a means to illuminate the stairs, in- cluding the landings and treads. Interior stairways shall be provided with an aniftcial light source located in the immediate vicinity of each landing of the stairway. For interior stairs the artificial light sources shall be capable of illuminating treads and landings to levels not less than I foot-candles ( I 1 lux) mca- surcd at the center of treads and landings. Exterior stairways shall be provided with an artificial light source located in the immediate vicinity of the top landing of !he stairway. Exterior stairways providing access to a kmsement from the outside grade level shall be provided svit)t an artificial light source lo- 2003 INTERNATIONAL RESIDENTIAL CODE _1