Replies

1. 
   Guest_ | Jan 24, 2000 12:43pm | #1

   *
   There's a trick called a "foot vent," permitted by code when no alternative exists. Redwood Kardon's "CodeCheck" handbook has a decent diagram, it's a bit complicated.

1. 
   Guest_ | Jan 24, 2000 05:54pm | #2

   *If you're getting inspected, get their opinion as even in a "LOOP Vent", there are different interpretations of what is allowed and how to do it. The loop vent may be the same as Andrews, if not then now you have 2 choices. Some locales allow a "POP" vent. I cannot attest to it's acceptance or reliability. Usually used where inspection is not req. or venting normally is considered too difficult. A better than nothing attitude. Call inspection, they'll help you. Course, make sure there's nothing else that might complicate matters. I'd have drawn you a diagram, but am computer illiterate. If you can imagine a drain with the vent coming off high and looping back, then down and sweeping into the main drain upstream of your sink drain............ah, ask the inspector.

1. 
   Guest_ | Jan 25, 2000 04:32am | #3

   *Pop -up island vents are commonly seen in my area, though I'm not sure what cabo syas about their usage. I have one in my kitchen,and has never caused a problem. The last plumber i talked to said they would be code soon(2 years ago), but who knows? As Andrew says, "my two cents".If you need a pic to see what i'm talkin 'bout, email @ mmcder9557@aol.com : )

1. 
   Guest_ | Jan 25, 2000 08:20am | #4

   *Around here plumbers call them Studor vents (brand name). The actual name is air admittance valve, and yes, they are permitted by CABO residential code. Don't know what code is enforced (if any) in Doug's area. They have been used around here for about 7 years. They work OK.

1. 
   Guest_ | Jan 26, 2000 09:13am | #5

   *I put a loop vent in my kitchen sink with garbage disposal in a very tough location. It required a complex and long vent. My inspector said why didn't you use a studor vent!Our inspectors are pretty conservative so I'm sure the studor vents would be accepted in most areas. As always, check with your inspectors to see if they allow them.

2. 
   Guest_ | Jan 29, 2000 10:00am | #6

   *The Journal of Light Construction June 1999 has an article about venting by Rex Cauldwell. He deals with island vents and has a good diagram on page 97. They might even have this article online at <ahref="http://www.jlconline.com/">JLC