Section 5. Stairways
All stairways in such tenement houses shall lead directly to the ground floor. The location and construction of all stairways shall be determined by the chief of the Bureau of Building Inspection so as to provide for the safety of the occupants of such tenement house.
All such tenement houses shall be provided with a tower fire escape or tower fire escapes, enclosed in incombustible material, the number and location of which shall be determined by the chief of the Bureau of Building Inspection.
All stairways shall have a rise of not over eight inches to a step, and not less than nine inches tread, exclusive of the nosing. All stairways and all hallways must be not less than three feet in width in houses containing less than fifteen rooms; not less than three feet six inches in width in houses containing not less than fifteen rooms and not more than twenty- five rooms; and not less than four feet in width in houses containing twenty-five or more rooms. 1895, June 7, P.L. 178, Sec. 5.