1153.03 DESIGN AND MAINTENANCE.
   (a)   Size. Unless otherwise specified in this Zoning Code, a required off-street loading berth shall be at least ten (10) feet in width by at least twenty-five (25) feet in length, exclusive of aisle and maneuvering space, and shall have adequate vertical clearance.
   (b)   Surfacing. All open loading berths, including associated driveways, aisles and circulation areas, shall be graded and improved with bituminous concrete or Portland cement concrete.
   (c)   Drainage. All loading berths shall be provided with adequate drainage facilities as approved by the City Engineer.
   (d)   Separation. All open off-street loading areas shall be separated from public street rights-of-way or setback lines that have been established by this Zoning Code by a wall, fence, or similar structure and by a strip of ground at least four (4) feet in width, and a six (6) inch high poured-in-place concrete curb shall be provided on the parking lot side of the four (4) foot width, extending below grade not less than eighteen (18) inches.
   (e)   Screening. When any open off-street loading area is adjacent to a lot in an Agricultural, Residence or Office-Residence District, or is separated only by a dedicated street or alley, an effective buffer or screen consisting of a solid wall, solid fence, or dense living hedge shall be provided at the lot line to protect the privacy of the adjoining residential uses. Such wall, fence, or hedge shall be not less than six (6) feet in height, except as provided elsewhere in this Zoning Code.
   (f)   Lighting. Any lighting used to illuminate off-street loading areas shall be equipped with suitable shielding or be so designed as to avoid casting direct light upon any other property located in a Residential District.
   (g)   Signs. The Director may require the installation of directional signs.
   (h)   Marking. Designated loading berths shall be marked on the surface of the loading area with paint or permanent marking materials and maintained in clearly visible condition.