Help,I am building a 2 story house and am doing the work myself.I am having trouble finding out information on dranage and venting.Would like to talk to someone that knows how to tie upstairs and downstairs plumbing and venting together.A diagram would be nice.Would be willing to send my drawings to you if you could layout a system that would work for me.Would be willing to pay for your time,but am trying to save as much money as I can as I was in the Iron Mountian Fire in Colorado this June and have had to start over again.Everything needs to be state code approved so looking for the correct way to do this project so all will pass inspection.Please respond,thank you,Don!