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Minimum Window Sill Height

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Stair Width & Height

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Required stair width is determined by the required egress capacity of each floor the stair serves, considered independently. It is not necessary to accumulate occupant loads from floor to floor to determine stair width. Each story or floor level is considered separately when calculating the occupant load to be served by the means of egress from that floor.

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Door Clear Width

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OCCUPANCY TYPE (new building)

CODE REF.
DOOR minimum CLEAR WIDTH

AMBULATORY (Sprinklered and Not Sprinklered)
NFPA 101, 2015 (20.2.3.4)
810 mm. required for diagnostics or treatment area such as x-ray, surgical or physical therapy.

BUSINESS (Sprinklered and Not Sprinklered)
NFPA 101,…

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Corridor Width

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OCCUPANCY TYPE (new building)

CODE REF.
MINIMUM CORRIDOR WIDTH

AMBULATORY
(Sprinklered or Not Sprinklered)
(20.2.3.2)
1120 mm.

BUSINESS
(Sprinklered or Not Sprinklered)
(38.2.3.2)
1120 mm. serving occupant load > 50,
900 mm. serving occupant load <…

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