Any business, commercial, industrial, institutional or manufacturing structure or use hereafter erected, initiated or enlarged, shall provide off-street space for the loading and unloading of goods, where necessary to the conduct of the particular use. Such loading space shall be located on the same site as the main use which it is designed to serve and each loading space shall be so designed that there will be no encroachment onto public right-of-way by vehicles being loaded or unloaded.

Unless otherwise specified by the building inspector, there shall be one (1) loading space provided for every business, commercial, industrial, institutional or manufacturing use. One (1) additional loading space shall be provided for each twenty thousand (20,000) square feet of floor space or used land area. All loading space shall be permanently surfaced and shall be lighted and screened in accordance with the regulations governing required off-street parking space.

Each loading space provided under this section shall have a minimum width of ten (10) feet and minimum length of forty five (45) feet with a minimum vertical clearance of fourteen (14) feet and shall include sufficient space for standing, loading and unloading of standard commercial vehicles.