I'm still a bit confused

Problem 2: Assuming the total surface load on the deck below (Dead+Live) is 80 psf and the fixed equipment weighs 5000 lbs. The self-weight of all the beams is 50 plf. 1) Draw a FBD and find the support reactions for beams B1 - B7. 2) Find the forces going into the pads Al, A2, B1 and B2, and.. 3) Check your result by checking the net pad forces against the total weight of the deck structure. (Note: The two beams B5 are attached to B2 at one end, and overhang (are sitting on top of) beam B1). Deck span B Fixed Equipment of 5000 lb 5 ft 0 0 1 L B6 B5 20 ft B2 6 ft L 12 ft B3 0 2 10 ft 16 ft 10 ft 10 ft FRAMING PLAN