§ 15-121 ALLEYS.
   1.   Alleys shall be provided in all commercial and industrial subdivisions, except that the Planning Commission may waive this requirement, where other definite and assured provisions are made for service access, such as off-street loading, unloading and parking, consistent with and adequate for, the uses proposed.
   2.   Alleys for residential areas shall not be less than 20 feet in width.
   3.   Alleys for commercial or industrial areas shall be no less than 30 feet in width.
   4.   Alley intersections and sharp changes in alignment shall be avoided, but where necessary, corners shall permit safe vehicular movement.
   5.   Dead-end alleys shall be avoided where possible, but if unavoidable, shall be provided with adequate turnaround facilities at the dead end, as determined by the Planning Commission.