Design floors and parts for at least these uniform and point live loads.
Garage floors take 2,000 lb on a 4.5 in square and stair treads take 300 lb on a 2 in square, if worse than the uniform load.
An attic counts as limited storage when there is 42 in of clear height or truss webs leave a 42 x 24 in space; the 20 psf only applies where the access, slope and insulation conditions are all met, the rest takes 10 psf.
Glass in guards and handrails is designed for four times the rail and infill loads; infill takes 50 lb on one square foot.
Braced panels get 1/2 in gypsum on the opposite side (not glued in SDC D), except for GB, BV-WSP, ABW and portal methods, or if the bracing length is increased.
Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.
Check your plans against these codes
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