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.
53 P.S. § 15066
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.
53 P.S. § 15066