The size of lines to be installed shall be determined by the City's Comprehensive Plan for water and the type of development to be served. Feeder mains shall not be smaller than eight (8) inches and the system shall be looped. Branch mains in commercial areas shall not be smaller than eight inches (8") and branch mains in residential areas shall not be smaller than six inches (6"). If indicated by the Comprehensive Plan or if a need is demonstrated by the running of an approved electronic water model (KyPipe, CYBERNET, etc.), mains shall be upsized accordingly.