From the auditorium at least two exits remote from each other leading into open courts or streets shall be provided in each of both side walls of the auditorium on all tiers. Each exit shall be provided with approved fire doors.
The minimum width of doorways shall be 5 feet in the clear except exit doorways, which may have a minimum width of 4 feet.
All entrance and exit doors shall open outwardly and be hung in such manner as not to obstruct any part of the required width of a doorway, passage or stairway. The fastenings of these doors shall be such as can readily be opened from the inside at all times without the use of keys or any special knowledge or effort. The use of draw bolts is prohibited. All such doorways shall be entirely unobstructed.
Every entrance and exit doorway opening from the auditorium shall have over the same on the auditorium side the word EXIT inscribed in legible letters not less than 6 inches high, or an illuminated sign with letters of the same height. Auditorium entrances and exits shall be numbered with figures not less than 6 inches high.
No mirrors shall be so placed as to give the appearance of a doorway, exit or passage. There shall be no false doors or windows.
There shall be legibly printed on the program of each performance a separate diagram or plan of every tier. Each such diagram shall occupy a space not less than 15 square inches and shall show distinctly the entrances and exits from each tier and where they lead.
Where any entrance does not open directly on a street, the corridor or passage connecting it with the street shall be constructed of continuous walls of brick or other fireproof material equally efficient. The roof construction of these corridors must be fireproof and of strength sufficient to safely sustain a live load of 150 pounds per square foot of every superficial foot thereof. The height of such corridors shall be not less than 10 feet throughout. No doors or windows shall be permitted in the side walls or roof.
When stairs return directly on themselves, a landing of the full width of both flights, without any steps, shall be provided. The outer line of landings shall be curved to a radius of not less than 2 feet; this provision, however, shall not apply to emergency exit stairs on outside of buildings. Stairs turning at an angle shall have a proper landing. In stairs when two side flights connect with one main flight, the width of the main flight shall be at least equal to the aggregate width of the side flights. No stairway shall ascend to a greater height than 12 feet without a level landing, and the length and width of such landing shall be not less than the width of the stairs; no run of stairs shall consist of less than six risers between platforms.
All stairs shall have on both sides strong hand rails. Where stairs are built between walls rails shall be firmly secured to the walls about 3 inches distant therefrom. All rails shall be about 3 feet above the center of the treads. This provision shall also apply to all steps in side aisles of galleries. The width of all stairs must be measured between hand rails. All stairs and landings between stories, when seven (7) feet and over in width, shall be provided with a center hand rail of metal, not less than 2 inches in diameter, placed at a height of about 3 feet above the center of the treads and landings. Such rails shall be supported on wrought metal or brass standards securely bolted to the treads or risers of stairs, or both. At the head of the flight of stairs terminating at each story, the post or standard shall be at least 6 feet in height, to which the rail shall be secured.
The entrance opening directly on a street shall not be on a higher level from the sidewalk than four steps of 73/4-inch risers each.
Where the number accommodated in a gallery exceeds two hundred, there shall be at least two separate and distinct entrances. No entrance stairs to any tier in the auditorium shall be less than 5 feet wide.
All entrance stairways for the use of the audience (excepting those leading to the first gallery only, which may be open on one side), shall be inclosed with walls of brick or other fireproof materials, in the stories through which they pass. There shall be no communications above the street or court grade in any of said stairway inclosures except the communication from the tier for which the stairway is exclusively intended. No stairway from a gallery shall communicate with the basement or cellar. No door shall open immediately upon a flight of stairs, but a landing at least the width of the door shall be provided between such stairs and such door.
All stairs shall have treads of uniform width and risers of uniform height throughout in each flight. In no case shall the risers in any stairs exceed 7 3/4 inches in height nor shall the treads, exclusive of nosing, be less than 9 1/2 inches wide. No circular or winding stairs shall be permitted and no winders may be introduced in any stairs.
Entrance stairs and passages for the dressing rooms shall be at least 36 inches wide and extend independently to the street or court. No stairs in the stage section shall be less than 30 inches wide. At least 2 independent staircases, with direct exterior outlets at court or street grade, shall be provided for the service of all tiers in the stage section, and shall be located on opposite sides of the stage.