I'm not sure. Would need to pay the architect/engineer to design. Gotta pay that mofo too grrr
Thanks for the gauge gents
since you want it flush (it may end up hanging a bit depending on joist size above) two temporary walls need to be built.
all the joists cut back, the beam slid up (it is going to weigh 300lbs)
not too many hangars there. you need to fill every hole in the hanger with a nail (the right nail too!)
also hope your slab is thick enough - need to drill a pilot hole and check - probably needs 6" , or footings under the posts will be required.
are both sides on the slab, or is one terminating on the foundation (end wall)?
the temporary walls are going to mess with your ceiling drywall.
windows can be a pain. do you have vinyl siding ?
are they on the wall the supporting the joists?
i think the better way to go is to get the architect or structural engineer to draw up your plans, then have them bid on,
so contractors know what they are expected to work with. I have an architect for you - i also have a local contractor
as an aside, i did a recessed beam in my house in a weekend to the engineer's specs, not counting the drywall - about 16'.
just needed some friends and a material lift to get it in place.
the higher end of that number seems reasonable - not including materials. ie - will you pick a $300 window, or a $3,000?