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In pre-ordinance buildings (built before July 7, 1957), the building commissioner and fire commissioner may approve the following types of exits in lieu of the required means of vertical exit prescribed in Section 13-160-030.
(a) Fire escape stairways complying with the requirements of Section 13-160-630 may be used in lieu of not more than 50 percent of required stairs.
(b) A balcony, having an area of not less than 18 square feet and provided with a ladder of noncombustible materials extending to the ground, may be used in lieu of one of two required stairways for a dwelling unit having a floor level not more than 15 feet above grade.
(Prior code § 78-7; Amend Coun. J. 9-13-89, p. 4604)