Hi- I bought some house plans and turned them into the city. They did not have some things that they were supposed to- such as the waste isometric, actually the letter says a below ground plan (under slab) and a plumbing isometric. I am a licensed hvac contractor- not a plumber--and this is above my paygrade. I dont know all the intricacies of what sizes of pipes go where and so on- and so I was wondering if someone could help me- if I emailed the plan and if you have some kind of software that could draw it- I would gladly pay you . Thanks