The arrangement of streets in new subdivisions shall make provision for the continuation of the existing streets in adjoining areas, or their proper projection where adjoining land is not subdivided, insofar as they may be deemed necessary for public requirements.  The width of streets on new subdivisions shall not be less than the minimum widths established herein.  The street and alley arrangements shall not cause hardship to owners of adjoining property in platting their own land and providing convenient access to it.  Offset streets shall be avoided.  The angle of intersection between minor streets and major streets shall not vary by more than ten degrees from a right angle.  Streets obviously in alignment with existing streets shall bear the names of the existing streets.  Proposed street names that are in conflict with existing street names shall not be approved.  (1980 Code 152.16)