Hi,




We are turning the garage into a master bedroom but we ran into a problem. We do not know how to install a new drain for the bathroom the closest drain is the washer in the utility room 10 feet away and we on a concrete slab can you give us some advice on how to go about installing the drain.



Thanks

The washer drain line's too small to connect a bathroom group to. You will have to locate the main and connect to that. Let me tell you how a typical bathroom group roughs in.
Most bathroom groups are roughed in like this.
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. Check your local codes.to make sure you're not in the excluded 10 percent.. 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.
Good luck, Tom