Cut into Existing Dry Vent

Reply

  #1  
Old 01-04-14, 12:02 PM
F
Member
Thread Starter
Join Date: Jan 2014
Location: Canada
Posts: 2
Received 0 Votes on 0 Posts
Cut into Existing Dry Vent

Hello,
I'm putting a bathroom in my basement and just looking for clarification. I am tying my basement dry vent into my 3" stack. When I cut into the stack i had some, not a lot, but some water come out when I made my first cut. My septic waste line is 3' down from cut. I have a sink that drains into the stack from 2' away and I made my cut 11" from the top of the sink drain fitting. I am planning on setting my 3x3x1 1/2 wye 6" above the top of the sink drain pipe. After seeing the water I am wondering if it needs to go higher? Or if the bit of water is common?
Cheers,
Fletcher
 
Sponsored Links
  #2  
Old 01-04-14, 12:14 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,138
Received 55 Votes on 48 Posts
Yes needs to be 36" above the flood plain of the sink... Thats code in the states here in USA...

What drains into the stack from above? If anything then you cant tie in as that is a wet vent...

But codes may be different where you live...
 
  #3  
Old 01-04-14, 01:01 PM
F
Member
Thread Starter
Join Date: Jan 2014
Location: Canada
Posts: 2
Received 0 Votes on 0 Posts
Picture added

Here's a picture, easier to see that way. Main waste line runs below floor following stud direction. Was going to tie the new dry vent into the stack 6" above the sink pipe. Were you saying I should be then 36" above the sinks drain tie in my dry? Code for you would work fun for me up here
Nothing drains into this stack aside from the sink shown. It goes through the roof.

Thanks for your help
 
Attached Images  
  #4  
Old 01-04-14, 04:09 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,138
Received 55 Votes on 48 Posts
Were you saying I should be then 36" above the sinks drain tie in my dry?

36" above the flood plane which is the top of the sink itself...

But may I ask what that dry vent is for? I assume the sink is using the stack as a vent and the dry vent is for the other fixtures? ( Tub...Toilet...?)
 
Reply
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: