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Any building or structure intended to be used wholly or in part as a theater, auditorium, a public garage or school shall be constructed according to specifications for fireproof construction hereinafter set forth. Any building intended to be used as a hospital and which is more than one story in height shall be of fireproof construction; and any building to be used for the storage of explosives or flammable liquids or for storing nitrocellulose, or for dry cleaning establishment, foundry or coffee roaster shall be fireproof construction.
('72 Code, § 151.021) Penalty, see § 10.99
(A) Masonry is that form of construction in which non-combustible masonry units such as stone, brick, concrete block, or tile, hollow clay tile, gypsum block, or other similar building units or materials or a combination of these materials, are laid up unit by unit and set in mortar. The minimum permissible thickness of walls and partitions of masonry, and the quality of those materials shall conform to the American Standard Testing Materials Requirements for Masonry, Bulletin No. 3-145, 1940 edition, and Bulletins C-90 and C-129 of 1952 edition, published by the National Bureau of Standards of the United States Department of Commerce.
(B) Masonry bearing walls, party walls, fire walls, fire division walls, exterior panel walls, inclosure walls or curtain walls, eight inches or less in thickness must be laid in portland cement or cement-lime mortar as defined in this chapter.
('72 Code, § 151.030) Penalty, see § 10.99
(A) Portland cement shall conform to the standard specifications and tests for portland cement adopted by the American Society for Testing Materials, published in pamphlet form as C150-52.
(B) Steel used as reinforcement for concrete shall conform to the standard specifications and tests for portland cement adopted by the American Standards Society for Testing Materials, “Standards on Cement,” 1952 edition.
('72 Code, § 151.028) Penalty, see § 10.99
All buildings, including single-family dwellings hereafter erected, shall be provided with at least two means of egress from the building, as far from each other as the plan of the building will permit, or by a doorway in a fire wall leading to another floor area which is provided with adequate stairs or other independent means of exit. No part of a floor shall be more than 100 feet from an exit.
('72 Code, § 151.039) Penalty, see § 10.99
(A) Monolithic concrete walls having less than .02 of 1% of reinforcing steel shall be considered as plain concrete and the thickness of single bearing walls of plain concrete shall be in accordance with the recommendations in the report of the American Standard Building Code Requirements for Masonry, 1952 edition.
(B) Subject to the requirements in other parts of this chapter, reinforced concrete bearing walls shall have a thickness of not less than six inches for the top story with the thickness of succeeding lower stories including basement, increasing at the rate of one inch for each two stories.
(C) In such walls the amount of reinforcement shall be at least .02 of 1% in each direction, horizontal and vertical, the steel being equally distributed on each face of the wall within a maximum bar spacing of 24 inches.
(D) The combined thickness of the separate parts of double or triple monolithic walls shall be not less than that required for single walls, and no single section of a double or triple wall shall be less than four inches thick. The sections shall be tied together with 3/8 inch round or square galvanized or tar-coated rods, with two-inch hooks at each end, the rods to be spaced not more than 18 inches horizontally and vertically.
(E) Exterior panel walls supported at each story of skeleton construction buildings shall not be less than five inches thick of reinforced concrete.
('72 Code, § 151.031) Penalty, see § 10.99
(A) Portland cement mortar used in laying up masonry shall be mixed in the proportion of one part of portland cement to not more than three parts of sand by volume.
(B) Hydrated lime or lime putty may be added not to exceed 15% by volume of the portland cement used.
(C) Cement-lime mortar shall be mixed in the proportion of one part of hydrated lime or lime putty to not more than six parts of sand by volume.
(D) Lime mortar shall be mixed in the proportion of one part of portland cement added to the amount of 15% of the volume of the lime.
('72 Code, § 151.027) Penalty, see § 10.99
Openings in party or fire walls shall be provided with self-closing fire doors or with positive means of closing the openings to prevent the passage of fire. Doors in fireproof stair and elevator shaft enclosures and coverings for hatchways in floors of all buildings shall be self-closing.
('72 Code, § 151.036) Penalty, see § 10.99
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