The Department of Public Works is authorized and empowered to do any of the work either by contract or by day labor as in the judgment of the Director of Public Works may be best for the interests of the City, in each instance. City Code, 1879, art. 53, §14 1893, art. 54, §14 1927, art. 48, §13 1950, art. 39, §5 1966, art. 29, §5 1976/83, art. 29, §5 Ord. 1862-010 Ord. 48-496 Ord. 76-142