(A) In the following cases:
(1) When any building or structure is hereafter erected or any use of land hereafter established, or
(2) When the intensity of use of any building or structure or premises is increased, or
(3) When any existing use of a building or structure is changed or converted to a new use.
(B) The following minimum requirements shall apply:
(1) Location. All required loading berths shall be located on the same zoning lot as the use served. No loading berth for vehicles over 2-ton capacity shall be closer than 50 feet to any property in a residence district. No permitted or required loading berth shall be located within 25 feet of the nearest point of intersection of any 2 streets. No loading berth shall be located in a required side yard, and any loading berth located in a required rear yard shall be open to the sky.
(2) Size. Unless otherwise specified, a required loading berth shall be at least 10 feet in width by at least 25 feet in length, exclusive of aisle and maneuvering space, and shall have a vertical clearance of at least 14 feet.
(3) Access. Each required off-street loading berth shall be designed with appropriate means of vehicular access to a street or alley in a manner which will least interfere with traffic movements, and subject to approval by the plan commission.
(4) Surfacing. All open off-street loading berths shall be improved with a compact macadam base not less than 7 inches thick, surfaced with not less than 2 inches of asphaltic concrete or some comparable all-weather dustless material.
(5) Repair and service. No motor vehicle repair work or service of any kind shall be permitted in conjunction with loading facilities provided in any business districts.
(6) Space allocated to any off-street loading berth shall not, while so allocated, be used to satisfy the space requirements for any off-street parking facilities or portions thereof.
(7) For special uses other than prescribed for hereinafter, loading berths adequate in number and size to serve such use, as determined by the planning commission, shall be provided.
(8) Uses for which off-street loading facilities are required herein but which are located in buildings of less floor area than the minimum prescribed for the required facilities shall be provided with adequate receiving facilities off any adjacent alley, service drive, or open space on the same lot which is accessible by motor vehicle.
('69 Code, App. A, § 4.7)