Ive done this calculation many times before in my old job but Im on my own now and dont have any reference calcs. Im doing something really stupid wrong but I cant figure it out. I have a large garage in a house with a basement under it. The max. span between filler beams is 9'. Im using 18Ga, 2" Lok Floor Composite Deck with a 5.5 inch slab. Im using 60psf live and 60psf dead. My unshored construction spans are ok. My uniform loads are ok. I applied a concentrated load of 2000lb to the center of the span and my moment is huge. It is 4 times the uniform load moment per foot width. No slab will work with this, so Im forgetting something. Also, as I read IBC it seems to say you can design either for 50psf uniform load OR 2000lb concentrated load. I would think this means, whichever is greater but it does not read this way. Help..I need to get this done ASAP.