Wood joists, beams or girders which frame into masonry or reinforced concrete shall have a minimum of 1/2-inch (12.7 mm) air space at the top, end and sides or shall be preservative pressure treated or of an approved durable species.
Where masonry extends above such wood members, joists shall be fire-cut so the top edge does not enter the masonry more than 1 inch (25 mm) or shall be provided with wall plate boxes of self-releasing type or approved hangers.