Buildings meeting this section are separated occupancies, divided per Table 508.4.
Sprinklered building examples: R to A, E, B, M, S-1, S-2 or U is 1 hour; A/E to B, M, S-1 1 hour; A/E to S-2/U none; B/F-1/M/S-1 to each other none; I-2 to most groups 2 hours; H-2 3 hours from A, B, R. Unsprinklered values are one hour higher or not permitted. Separations from areas used only for private vehicles drop 1 hour (not below 1).
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.
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