Concrete cement gutters shall be twenty-four (24) inches wide, extending from the curb with the concrete uniformly six (6) inches in depth. The materials, mixing and laying of the concrete shall meet all requirements as specified for concrete paving in sections 17-69 through 17-82, or as approved by the urban county engineer, except expansion joints shall not be placed along the curb and shall be placed only at intervals of every one hundred (100) feet at right angles to the curb. Reinforcing shall also be eliminated in the gutters.