The gross residential density (families per acre) shall not be greater than if the tract were developed with minimum lot sizes as specified in this Zoning Code for the appropriate type of residential use within the district.
   To compute the gross residential density of a given subdivision, the total number of acres suitable for building is divided into the total number of dwelling units proposed, the answer being in dwelling units or families per acre. Areas not suitable for building, such as lakes, ponds, streams, swamps, hazardous topography or soils and land which are not available to the owner for development because of easements, shall not be considered as part of the gross acreage in computing the maximum number of dwelling units that may be created under this procedure, unless otherwise determined by the City Planning Commission and Council.
(Ord. 66-103. Passed 12-19-66.)