Off-Street Loading. For all new buildings or additions to existing buildings, provision shall be made for off-street loading space adequate to serve the intended use. Such space shall be at least ten (10') feet in width, twenty-five (25') feet in length and have a fourteen (14') foot clearance above grade, except that where larger vehicles are anticipated, the dimension shall be adequately increased. Off-street loading shall be in other than the front yard or side street front yard.