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(a) A rooftop deck is a deck that is erected on top of the roof or on top of any part of a building and shall comply with all the requirements for decks in Section 15-8-321, except as expressly modified in this section.
(b) Rooftop decks are roof structures and shall comply with Section 15-8-510.
(c) A rooftop deck that is protected by a two-hour noncombustible parapet wall at least three feet high, and that does not exceed the greater of 500 square feet or 33 percent of the total roof area of the building on which it is located, may be run to the face of the parapet wall, provided that no more than one such deck shall be allowed per building. A parapet wall shall not be required on any side that is not less than six feet from an interior lot line and not less than six feet from another building.
(d) A rooftop deck must have access to two exits, except only one exit shall be required for a rooftop deck:
(1) not more than 800 square feet in area, not more than 12 feet above grade, and adjoining a public way;
(2) not more than 300 square feet in area and not more than 40 feet above grade; or
(3) on a building of A-1 occupancy.
(e) Exterior stairs, when otherwise permitted, may be used for all required exits from a rooftop deck.
(f) A level containing no habitable space other than a rooftop deck shall not be considered a separate floor or story.
(g) Rooftop decks shall not be erected above any building of type IV-B construction.
(h) The construction of a roof below a rooftop deck shall provide fire resistance of not less than one- half hour from both sides
(Added Coun. J. 10-2-95, p. 8040; Amend Coun. J. 3-29-17, p. 45477, § 5)