First off thanks to everyone for all the great information on this forum. I have read a lot of great information on this site over the past few months. I have attached several pictures of a recent drain and vent install. The installation is on a remodel that was completely gutted. I will be running all the water lines with uponor. I will say the drain and vents were not installed by me. A local plumber was hired to do this. I am a little worried about the work that was done. We even had a big discussion on vents. The plumber wanted to stub all the vents up in the attic and vent them there. I disagreed and said it was the wrong way to do it. The argued and said they do it all the time. I said if people do this all the time then why do I see vents stubbed out of the roof on every new house that is built. I will try to give details on each picture below. I am really concerned about how these drains and vents were done.
The first two photos show the washer box drain going down with just a 90 fitting. I thought you had to have a p-trap within 30" on this. Also there is no vent. I thought you had to vent the washer. Also the kitchen has no vent, thought it had to be vented also.
The third photo is showing the p-trap for the washer box. The other drain you see there is for a bathroom sink.
The fourth picture shows how far the washer drain really runs before it even goes into the p-trap. Its hard to see but the p-trap is to the left of the stairs. All the pipe to the right is coming off the washer drain, goes behind the stairs, then into the trap.