Determine the reaction forces for beams B$-1,$ B$-2,$ and B$-3.$ Live load $=45$ psf

Dead load: $(1)$ Slab $=50$ psf$,(2)$ Deck $=5$ psf$,(3)$ Mechanical equipment $=10$ psf$,(4)$ Suspended ceiling $=8$ psf$,(5)$ Beam $=25$ lb$/$ft$,(6)$ Girder $=35$ lb$/$ft

Beam and Girder spacing: : $(1)$ L$1=14$ ft$,(2)$ L$2=12$ ft$,(3)$ L$3=8$ ft