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(a) In buildings of Types I-A, I-B, I-C and II construction, partition framing shall be of either or both of the following materials:
(1) Noncombustible materials;
(2) Fire-retardant treated wood within assemblies of one-hour maximum rating.
(b) In buildings of Type III-A construction partition framing shall be of heavy timber construction providing fire resistance as required for floor construction or roof construction above or shall be of noncombustible materials or fire-retardant treated wood within a one-half-hour to one-hour fire-rated assembly.
(c) In buildings of Types III-B and IV-A construction, partitions shall be of either of the following types:
(1) Combustible construction protected to provide fire resistance of not less than one-half hour;
(2) Noncombustible construction.
(Prior code § 62-6.1)
Partitions of combustible materials may be used for subdividing offices and similar spaces occupied by a single tenancy; provided, that the total area of combustible portions of such partitions measured as area of partition construction shall not exceed 25 percent of the subdivided space.
(Prior code § 62-6.2)
(a) Cornices, gutters and leaders hereafter erected on all buildings in fire district No. 1 or on buildings exceeding 40 feet in height in any fire district shall be constructed of noncombustible materials.
(b) Cornices of combustible materials, except on buildings of Types IV-A and IV-B construction and on single-family dwellings of any construction type shall be covered with noncombustible materials when located on a wall facing an interior lot line at a distance of less than three feet.
(Prior code § 62-7.2)
(a) A balcony shall be defined as an open unheated floor area cantilevered from or supported by a building, and open to the atmosphere on at least one side.
(1) On a building not exceeding 55 feet in height, a combustible balcony may be constructed not closer than three feet from an interior lot line, provided it is not larger than 100 square feet and is separated from another structure on the same lot by not less than six feet.
(2) A balcony not larger than 100 square feet may be built of unprotected noncombustible construction, regardless of the type of construction required for the building to which it is attached.
(3) The floor, roof and wall construction of all other balconies shall conform to the requirements of the type of construction required for the building to which they are attached.
(b) An outdoor area which is accessible through a single dwelling unit, and on the same story as a habitable space within the dwelling unit shall be classified as a balcony, whether or not it is on top of the roof of a building.
(c) The floor, roof and wall construction of bay windows shall conform to the requirements of the type of construction required for the building to which they are attached.
(Prior code § 62-7.3; Amend Coun. J. 3-29-17, p. 45477, § 5)
A porch shall be defined as in Section 13-4-010 of this Code. Porches constructed of combustible materials shall be permitted when attached to residential units of Types III-B, III-C, IV-A or IV-B construction with the following limitations:
(a) Porches shall not exceed three stories in height.
(b) Porches shall not project more than ten feet from the building nor exceed 150 square feet in area per dwelling unit, exclusive of stairs.
(c) Porches shall not be located less than six feet from an interior lot line, except that porches meeting requirements (a) and (b) of this section may be located as close as three feet from an interior lot line if the porch side walls are fire-rated at one hour or more.
Exceptions: (1) Pre-ordinance porches (erected prior to January 20, 1950) not exceeding four stories in height and erected less than six feet from an interior lot line may be replaced with respect to height, size and location, subject to approval of the building commissioner. (2) New unenclosed front porches on new or existing buildings shall be permitted to be erected not less than three feet from an interior lot line if all of the following requirements are met: (i) the porch does not exceed one story in height; and (ii) the porch fronts entirely on a street; and (iii) the porch does not project more than ten feet from the building nor exceed 200 square feet in floor area, exclusive of stairs.
(Prior code § 62-7.4; Amend Coun. J. 9-13-89, p. 4604; Amend Coun. J. 10-2-95, p. 8040; Amend Coun. J. 3-5-03, p. 104990, § 42; Amend Coun. J. 7-27-05, p. 53348, § 1; Amend Coun. J. 11-13-07, p. 14999, Art. II, § 1)
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