i have a project to do for my plumbing class. Ive been given a plan . There is one room dividedtwo restrooms, a womens and a mens, side by side with the womens havign 4 water closets and 3 lavatories and the mens having 2 water closets, 2 urinals and 3 lavatories. At the entrance of the room, there are 2 drinking fountains. I need to make a riser diagram and do the waste and vent sizing. Can anyone show me how to do that!