All sidewalks and all curb and gutters shall be constructed of good-quality concrete. Concrete shall be composed of sand, crushed rock or crushed gravel, Portland cement, and only enough water to give a workable mix. The concrete mixture shall develop a compressive strength of at least 3,000 pounds per square inch in 28 days, but in all cases have at least five and one-half bags of cement per cubic yard and not more than six gallons of water per bag of cement. Good accepted practices shall be followed in mixing, transporting, placing, finishing, and curing the concrete.
(Prior Code, § 12.08.020)