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(a) Foundation or subgrade for all work must be set at the grades determined by the director. The director may inspect the foundation, subgrade, and reinforcing before concrete is poured.
(b) Concrete must be thoroughly compacted so that the minimum thickness conforms to the requirements of this article. Concrete must be free from honeycombing, rock pockets, and separation and segregation of ingredients. Upon completion of the concrete core, the one-half inch mortar surface must be placed while the core is still green, the work being carried on uniformly so that a perfect bond is obtained between the concrete core and mortar surface. (Ord. Nos. 8590; 22026)
Curb, curb and gutter and separate gutter shall be protected from vehicular traffic for not less than six days.
Earth or sand shall be used for backfill and shall be thoroughly compacted, care being taken not to injure the completed work. (Ord. 8590)
Curb and gutter shall have the back 12 inches deep and vertical. Curb shall be six inches thick at the top, face battered 1:3. The gutter shall be uniformly six inches thick and a minimum of 24 inches in width, except where gutter joins gutter of a greater width.
Where driveways are to be constructed, the curb may be laid back, radius begun and No. 3 (three-eights inch diameter) round bars, exposed 15 inches, placed on 24 inches center to center for dowels. (Ord. 8590)
Driveway approaches shall conform to the following standards:
CONCRETE. Driveway approaches shall be constructed of one-course concrete, reinforced, with a six inch minimum thickness. The minimum compressive strength of the concrete and requirements for the quantity of mixing water and the concrete slump must conform to the city of Dallas Addendum to the Public Works Construction Standards – North Central Texas as published by the North Texas Council of Governments, current edition.
REINFORCING STEEL. Reinforcement shall consist of No. 3 (three-eighths inch diameter) round bars placed not more than 24 inches on centers, both directions. Where steel is lapped, the lap shall be not less than 15 inches. (Ord. Nos. 8590; 31313)
(a) The director may inspect the foundation, forms, and reinforcing before concrete is poured.
(b) Concrete must be thoroughly compacted with an open faced tamper and struck off with a straight edge so that the minimum thickness is six inches. Concrete must be free from honeycombing, rock pockets, and segregation of ingredients. (Ord. Nos. 8590; 22026)
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