Par. 1. - The cut of the stair stringers shall not exceed seven and one-half inches rise, nor be less than ten and one half inches tread. There shall be no flights of stairs of more than fifteen or less than three steps between landings.

Section 101. Landings of Stairs

Par. 1. - Every landing shall be at least four feet wide. When straight 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 two feet to avoid square angles. Stairs turning at an angle shall have a proper landing without winders introduced at the turn except stairways leading to private boxes. No door shall open immediately upon a flight of stairs, but a landing at least two feet wider than the width of the door opening shall be provided between such stairs and such door. When two side flights connect with one main flight, no winders shall be introduced, and the width of the main flight shall be at least equal to the aggregate width of the side flights.

[1921, c. 60, sect. 10.]