I am building a house & would like to know when & where I need to put vents for my dwv?

What State are you in ? What City ?

I live in hutchinson ks

Wait for MassPlumber2008 or Speedball. They come in in the morning. They'll guide you through it...

I work under strict UPC in So.California that makes things too complicated and way too expensive for you guys in other States.

But I'll follow your project from distance...

I live in hutchinson ks

My live in roomie comes from Hutch. She's up there now and will be back in Florida next week. Small world!

I am building a house & would like to know when & where I need to put vents for my dwv?
First of all, in every state, every fixture that has a trap must be vented.
Having said that let me show you how a typical bathroom group will go down.
Toilet connects to sewer main or the stack vent. Lavatory connects to toilet drain and runs a vent off the top the stubout tee out the roof or revents back into a dry vent in the attic.. The toilet wet vents through the lavatory vent and the tub/shower connects to the lavatory drain and is wet vented by it. This is a normal rough in and is acceptable both by local and state codes and also The Standard Plumbing Code Book in 90 percent of the country.( Milo's in the excluded 10%) The vent off the lavatory may be run out the roof or revented back into a dry vent in the attic or if you're reventing back into a fixtures dry vent you must make your connection at least 6 inches over that fixtures flood rim.
If you're going t do the work yourself we can hold your hand and walk you through the installation if you wish.