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Stairway Dimensions:            Width: 44 inches/48 inches Minimum headroom: 80 inches Minimum risers: 4 inches Maximum riser: 7 inches Minimum tread with no nose extension: 11 inches Minimum nose: 1-1/4 inch maximum extension The stairways shall have a minimum width of 44 inches minimum. Exceptions include a 36 inches minimum for occupant loads of less […]

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