Transcription of COMMONLY USED RESIDENTIAL BUILDING CODES
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COMMONLY USED RESIDENTIAL BUILDING CODES
COMMONLY used RESIDENTIAL BUILDING CODES INTERNATIONAL RESIDENTIAL code (2009) form revised 5/10 STAIRWAYS 46. LANDINGS. Section R311 IRC 2009 Landings for stairways. There shall be a floor or landing at the top and bottom of each stairway. Exception: A floor or landing is not required at the top of an interior flight of stairs, including stairs in an enclosed garage, provided a door does not swing over the stairs. A flight of stairs shall not have a vertical rise larger than 12 feet (3658 mm) between floor levels or landings.
including the nosing at the level of floors and landings. Beveling of nosing shall not exceed 1/2 inch (12.7 mm). Risers shall be vertical or sloped from the underside of the leading edge of the tread above at an angle not more than 30 (0.51
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