Fire Stair Door Width

Full power operated doors shall comply with bhma a156 10 as listed in rule 1301 7 7 47 of the administrative code.
Fire stair door width. Buildings other than dwellinghouses suggests that the width of. Stair dimensions for straight stairway runs. A staircase that is enclosed throughout its height by a fire resisting structure and doors can sometimes be considered a place of comparative safety. A door or doorway is the clear width when the door is open see diagram c1.
Stair doors providing reentry typically have a failsafe lock or failsafe exit device trim which unlocks the lever handle upon fire alarm power failure but does not unlatch the door. The minimum recommended stair width is between 34 and 36 across the width of the tread. The door shall be capable of swinging from any position to the full width of the opening in which such door is installed when a force is applied to the door on the side from which egress is made. Stair width landing length.
The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures. Width of doors stairs and escape routes the building regulations approved document b2 fire safety. The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process. Door openings to resident sleeping units in group i 3 occupancies shall have a clear width of not less than 28 inches 711 mm.
A door in a compartment wall or separating wall leading to an alternative exit. A door that leads directly to a protected stair or a final exit via a protected corridor. Stairwell width and stair landing platform requirements are summarized by these sketches courtesy carson dunlop associates. Door openings to storage closets less than 10 square feet 0 93 m 2 in area shall not be limited by the minimum width.