§ 11.10 ESTABLISHMENT OF DISTRICTS.
   The following zoning classifications are hereby established.
   (A)   Residential districts.
      (1)   R-1 - Single-Family Residential District; purpose. The purpose of the “R-1” Single-Family District is to provide for low-density single-family detached residential dwelling units and directly related, complementary uses.
      (2)   R-2 - One-, Two-, Three- and Four-Family Residential District; purpose. The purpose of the “R-2” Family Residential District is to provide for one-, two-, three- and four-density family detached residential dwelling units, and directly related, complementary uses.
      (3)   R-3 - 5-12 Multi-Family Residential District; purpose. The purpose of the “R-3” Family Residential District is to provide for 5-12 multi-residential dwelling units and directly related, complementary uses.
      (4)   R-4 - Townhouse District; purpose. The purpose of the “R-4” Residential District is to provide for townhouses or one and two unit dwellings.
      (5)   R-5 - Multi-Family (over 12 units) Residential District; purpose. The purpose of the “R-5” Residential District is to provide for multiple-family structures over 12 units and directly related, complementary uses.
   (B)   Business districts.
      (1)   B-1 - Central Business District; purpose. The purpose of the “B-1” Central Business District is to provide for the development and redevelopment of high intensity commercial and service activities, gaining economic advantage from a concentration of complementary uses and drawing from and serving customers from the entire market area.
      (2)   B-2 - Community Business District; purpose. The purpose of the “B-2” Community Business District is to provide for medium intensity retail or service activities on a community and regional market scale and to provide goods and services to transient motor vehicle traffic. The districts should be located in areas well served by collectors or arterial street facilities.
   (C)   Industrial districts.
      (1)   I-2 - Light Industrial District; purpose. The purpose of the “I-1” Light Industrial District is to provide for the establishment of light industrial and manufacturing development and uses which, because of the nature of the product or character of activity, requires isolation from residential or commercial use.
      (2)   I-2 - Heavy Industrial District; purpose. The purpose of the “I-2” Heavy Industrial District is to provide for the establishment of heavy industrial and manufacturing development and use which, because of the nature of the product or character of activity, requires isolation from residential or commercial use.
   (D)   PUD - Planned Unit Development District; purpose.
      (1)   The purpose of the “PUD” Planned Unit Development District is to provide for the grouping of land parcels for development as an integrated, coordinated unit as opposed to traditional parcel by parcel, piecemeal, sporadic and unplanned approaches to development.
      (2)   This district is intended to introduce flexibility of site design and architecture for the conservation of land and open space through clustering of buildings and activities through conditional use provisions.
      (3)   It is further intended that planned unit developments are to be characterized by central management, integrated planning and architecture, joint or common use of parking, maintenance of open space and other similar facilities and a harmonious selection and efficient distribution of uses.
   (E)   MH - Mobile Home Park and Manufactured Housing PUD Districts; purpose. The purpose for the “MH” Mobile Home Park and Manufactured Housing PUD District is to provide for mobile homes and directly related uses and to provide for manufactured housing as a planned unit development.
   (F)   M-O - Mining Open Space District; purpose. The Mining Open Space District is intended to provide a district which will allow suitable areas of the city to be retained and utilized in open space and/or mining uses.