Whenever in the following sections the words "safety clearance" are used, said words shall be construed to require a space open its entire area to the sky, and which shall be continuous on all sides of the building or structure; between such building and any other building, or property dividing lot line, or the lot line adjoining or adjacent to a public park, or any main line of street, electric, elevated railway or any other railway right-of-way.
(Prior code § 129.1-19)