Landings
Landing at top & bottom of stairs . . . . . . . . . . . . .[312.1] {1003.3.3.5}
Landing min. 36in. deep x width of door or stair . . .[312.2] {1003.3.3.5}
Door (interior stair only) may open at but not swing over top step
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [312.1.1X] {1003.3.1.6X}
Floor or landing max. 12in. {1in.} below door threshold except sliding doors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [312.1.2] {1003.3.1.6}
Exterior door landing max. 8in. below threshold [312.1.2X] {1003.3.1.6X}
Door (except screen door) may not swing over landing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [312.1.2X] {1003.3.1.6X} Guardrail
Req'd for any walkoff >30in. above floor or grade . .[316.1] {509.1}
Min. height 36in. (34in. stair handrail) . . . . . . . . .[316.1] {509.2X1}
Max. opening size <4in. (6in. opening at tread/riser/rail triangle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [316.2] {509.3} Handrail
Grippable rail req'd if 2 {4} or more risers . . . . . . .[315.1] {1003.3.1.2}
Railing height min. 34in. and max. 38in. . . . . . . . .[315.1] {1003.3.3.6}
Grips must be 14in.-2din. {2in.} circular cross section . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-b17 [315.2] {1003.3.3.6}
Max. projection into stairway 42in. {32in.} . .F-b17 [314.1] {1003.3.3.2}
Ends shall return to wall or newel post . . . . . . . . .[315.1] {1003.3.3.6}
Windows
Ventilation
Natural ventilation (windows, doors, louvers)=>4% of floor area
{5% min. & 5sq.ft.} OR .. . . . . . . . . . . . . . . . . . . . . . . . [303.1] {1203.3}
Mechanical 0.35 air changes/hr. or 15cfm per occupant.[303.1X] {1203.3}
Bathrooms 12sq.ft. {5% floor area} openable window OR .[303.3X] {1203.3}
50cfm {5 air changes/hr.} fan to outside . . . . . . [303.3X] {1203.3}
Two rooms are considered one for light & ventilation if
opening between them min. 50% of common wall AND =>10%
floor area of interior room AND at least 25sq.ft. . . .[303.2] {1203.1}
Light
In habitable rooms, natural light min. [8%] {10% min. & 10sq.ft.} floor area
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [303.1] {1203.2}
Bathrooms may have artificial light only . . . . . .[303.3X] {NEC 210-70a1}
Safety Glass Req'd in glazing <60in. above tub or shower . . . . .[308.4] {2406.4}
Safety Glass IRC UBC Req'd in glazing <60in. above tub or shower .. . . . . . . . [308.4] {2406.4}
Req'd for all tub & shower doors . . . . . . . . . . . . .[308.4] {2406.4}
Req'd in doors if =>3in. sphere could pass through [308.4] {2406.4}
Req'd if vert. edge of glazing <24in. of door swing & bottom <60in. from floor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [308.4] {2406.4}
Req'd if walk-through hazard exists--all of following . F-b18 [308.4] {2406.4}
Books based on 2006 IRC, UMC, & UPC; 2005 & 2008 NEC; 2007 CBC, CPC, CMC & CEC with references to changes from prior editions. Books are published by The Taunton Press Inc. Code Check Copyright 2009 • Code Check is a registered trademark of the Taunton Press, Inc., registered in the U.S. Patent & Trademark Office