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IBC Chapter 4 — Special Detailed Requirements Based on Occupancy

Updated Mar 26, 2026
High-rise, atriums, underground, hospitals, detention, stages. Special fire/life safety provisions.

IBC Ch4: 403 high-rise (>75ft above FLED): sprinklered, Class I standpipe, fire alarm with voice, smokeproof enclosures, secondary water supply, emergency power. 404 atriums: sprinklered, smoke control, glass guards per 2406.2. 405 underground buildings (>30ft below exit): compartmented, standby power. 407 Group I-2 hospitals: corridor walls smoke partitions, smoke compartments 22,500sf max. 408 Group I-3 detention: smoke-proof locks, guard staff. 410 stages/platforms: proscenium wall 2-hr, fire curtain, sprinklers. 420 Group I-1/R-4 assisted living: fire barriers, smoke alarms.

TAGS
IBChigh-riseatriumhospitalundergrounddetention
DETAILS
code year
2024
code section
Chapter 4
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