Building Code Reference & ICC Study Hub
Essential IRC/IBC dimensions, code inspection cheat-sheets, and study flashcards for contractors, inspectors, and trade students.
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General Building
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Click card to flip📋 IRC Quick Measurements Reference
Stairs & Handrails (R311)
- Max Riser Height: 7 ¾ inches
- Min Tread Depth: 10 inches
- Min Headroom: 6 ft. 8 in.
- Handrail Height: 34 in. to 38 in. vertical
Egress Windows (R310)
- Min Openable Area: 5.7 sq. ft. (5.0 grade floor)
- Min Opening Height: 24 inches
- Min Opening Width: 20 inches
- Max Sill Height: 44 inches from floor
Guards & Alarms (R312/R314)
- Guard Required: Porches/decks > 30" above floor
- Min Guard Height: 36 inches
- 4-inch Sphere Rule: Openings cannot allow 4" sphere
- Smoke Alarms: Inside each bedroom & outside sleeping area
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