... stress of 20 ksi with loading of concrete+ deck + 20 psf, or concrete + deck + 150 lb. concentrated load,whichever is worse.2) Allowable deflection of free edge (based on fixed end cantilever) of 1/120 ... SpansRoof Deck CantileverRECOMMENDED MAXIMUM SPANS FOR CONSTRUCTION ANDMAINTENANCE LOADS STANDARD FOR 1½ INCH AND 3 INCH ROOF DECK 1. Design Manual for Composite Decks, Form Decks and Roof ... Modern Steel Construction Number 1, 1988, American Institute of Steel Construction, Chicago, Illinois. 8. "OSHA Safety and Health Standards Digest, OSHA 202',' U.S. Dept. of Labor,...