New guy here looking for some advice. Had a task thrown in my lap that is not really in my wheelhouse. Got a fellow that is building a 26' x 26' garage and wants to add a workshop above it. The garage is more of a walkout basement, so the workshop will be at ground level.
Here is the situation: No vehicles, other than a couple dirtbikes will be in the workshop. need to span 26' and support a 4" thick concrete floor on this upper level. I have figured using W12x26 spaced about 5' apart. 1 1/2" deep 18ga steel deck under the concrete.
Not looking for free engineering here.....just don't want to look like a complete dumb dumb when I go to an engineer for approval. Wondering if I am way off on my calcs?