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CONSTRUCTION (Continued): ~ Vent kitchen fan to outside via metal ducts. In ~athrooms, water closet compartments, laundry rooms and similar rooms, a mechanical ventilation system connected directly to the outside, capable of five air changes per hour s~all be provided where there are no openable windows. OUBC 1205-a ~ Provide all habitable rooms With outside windows with net areas of not less than 1/10 of floor areas not 10 sq. f~, Every sleeping room shall have an exterior door or not less than 5.7 sq. ft. of openable window. The min. net clear opening height shall be 24 inches. The min. net clear opening width shall be 20 inches. The finished sill height shall be not more then 44 inches. OUBC 1204 and 1205 (a) 29. Provide at least one 36" Swinging (exit) door OUBC 3304 (e) 30. Stairs: OUBC 3305 a. ~ax. 8" rise. Min. 9" run. b. Headroom over stairs 6'6" min. c. Handrail designed for 20 lbs. lateral load. Table 23-c d. Stairways having less than 4 risers need not have handrails. 3306 (j) 31. Heating facilities capable of maintaining a temperature of 68 degrees F. at a point 3' above the floor are required in all habitable roms. OUBC 1211 32. Warm air furnace shall not be installed in a bedroom or bathroom. OUMC 704 33. Where bottom of glass lig}~t is within 18" of floor and all glass doors and wall panels of bathtub and shower enclosures, must be of laminated, tempered or wire glass. OUBC 5406 (d) aApproved numbers or addresses 11 be provided for all new buildings in such a position as tO be plainly visible and legible from the street or road fronting the property. ~ .Every dwelling shall be provided with an approved product of combustion detector other than heat mounted on the ceiling or wall at a point centrally located in the corridor or area giving access to sleeping rooms. Where sleeping rooms are on an upper level, the detector shall be placed at center of the ceiling directly above the stairs. Care shall be exercised when locating cold air return to furnace so that air flow to detector from non-sleeping areas is not impeded. A smoke detector shall be installed in the basement of d~elling units having a stairway which opens from the basement into the dwelling . Such detector shall be connected to a sounding device to provide an alarm which will be audible in the sleeping area. OUBC 1210 (a) 36. Loose-fill insulation. Blown, pour~ and spray-on type may be used in attic spaces where roof slope is 4 in 12 or grater and there is at least 44" of headroom at the ridge. 5303 (a) 37. Thermal insulation shall not be installed within 3" of any metal chimney or gas vent. ~ Insulation requirements. Buildings with high-efficiency heatinc~ equipment such as: 1. Heat pumps that shows coefficient of performance as required in Table No. 53-D. 2. Gas and oil fired that shows minimum combustion efficienc~ of 80 percent Annual Fuel Us~ Efficiency (AFUE) rating. May have building elements insulated as FO1 lows: Ceiling R-3 0 (roof/ceiling assemblies in which has a slope of in 12 or greater, may be R-19). Walls R-19 Floors R-19 Other Heating systems: Ceilings R-38 (roof/ceilin~ assemblies in which as a slope of 3 in 12 or greater may be R-19) walls R~19 Floors R-19 OUBC 5303 (c)l 39. Slab min. 24" length of R-4.5 insulation placed between slab and foundation wall, length to include horizontal and vertical distance. 530~ (c) 4 ~. Weatherstrip doors between heate~ and unheated areas. ~. Heat ducts installed under floor or · n attic shall be provided min. R-4.5 INSULATION. 42. R-11 perimeter insulation accepted when crawl Space is a plenum. 43. Draft baffles are required at ears vents to deflect ventilation air ove~ blown insulation. (OU~C Section) 5303 2A Fireplace and chimney construction shall conform to chapter 37 OUBC 45. When alterations, repairs, or additions having a valuation of $1,000.0C occur, or sleeping rooms are added in existing Group R, Division 3 occupancies, the entire building shall be provided with smoke detectors as specified in UBC 1210 (a) 46. Sky lights set at an angle less than 45 degree from horizontal shall be set at least 4" above the plane of roof on a curb contacted as required for the frame.