§ 6-601.03. Buildings exceeding 60 feet in height; hotels, apartments, and tenements of 3 or more stories; halls with seating capacity of 300 or more; churches.

(a) All buildings of every kind, class, and description whatsoever, excepting churches only, erected, altered, or raised in any manner after June 1, 1910, as to exceed 60 feet in height shall be fireproof or noncombustible and of such fire-resisting materials, from the foundation up, as are now or at the time of the erecting, altering, or raising may be required by the building regulations of the District of Columbia.

(c) Every building erected after June 1, 1910, with a hall or altered so as to have a hall with a seating capacity of more than 300 persons when completed, as provided by the building regulations, and every church thereafter erected or building converted after June 1, 1910, for use as a church, with such seating capacity, shall be of fireproof construction up to and including the floor of such hall or the auditorium of such church as the case may be.