DWV

[diva]

Hello, I am having trouble figuring a good way to vent the plumbing in this remodel that I am trying to do. Of course there was no venting when this house was built in 1920 or so. The kitchen is next to the bathroom, however the kitchen sink is on the outside wall and the bathroom sink is against the opposite wall about 10 feet across the kitchen floor. I cannot run the venting up and over or around the walls as there are large barn beam type supports that prevent this. Any suggestions?

Do you have any good illustrations I could look at? I need to see it. I have a couple of good books but they are not quite down to my level. Thanks for the help

[LazyPup]

Diva..It would depend upon what code is in effect were you live.

The codes all require that the house must have a minimum of one Main Vent that runs undiminished in size from the main drain up and out through the roof.

If you look at your roof directly over the bathroom you will probably see that main vent.

In this case your kitchen requires an additional auxillary vent.

If you happen to be under the International Residential Code (IRC) you could consider installing an Air Admittance Valve (commonly called a Studor Vent or Cheater Vent) under the sink or a through the wall vent directly to the outside of the kitchen.

If you are under the Uniform Plumbing Code they do not permit air admittance valves, however you could consider using an island vent.

If you do not know which code is in your area you could call your local zoning office and ask them, or call any plumber in your community and they should be able to tell you. If you can determine which code is in force post that information and I will try to make an illustration with the specifications to help you out.

[diva]

The helpful information that I got when I called was " we use the 2003 Michigan Plumbing Code and the 2003 Michigan Residential Code." I will continue to pursue this information, perhaps through a plumber...

[diva]

The Michigan codes are all based on the international codes. If I can, I'm thinking that a vent out the side of the kitchen would work much easier than trying to do an island loop or some sort of re-vent. Don't you think?