Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-19-2011, 11:29 PM   #1
Member
 
Join Date: Jul 2007
Posts: 398
Rewards Points: 256
Default

Tie stack to main drain


I have a main drain (septic) that comes into crawl space thru wall @ 10 in off the ground and @30 in under the joists My stack drops thru floor @ 3ft off to the side of the drain axis. So I have to offset the stack over to the drain and then tie it in. I would prefer to keep the offset for the stack tucked right under the joists (so its tucked up out of the way - it's right beside my access). Which means my stack will turn 90 deg towards the main drain, run @ 3ft to where it reaches (crosses above) the main, then 90 deg down to tie into it.

Is this acceptable?
Can I just use standard 90 deg elbows for the 2 bends in the offset (across and down)?
How do i tie the last short "down" section of the stack offset into the drain? I'd like to drop the stack into a tee or a wye at this point as opposed to another elbow as i could then add a clean out right in the end os the drain. Does this make sense?

rtoni is offline   Reply With Quote
Old 04-20-2011, 06:48 AM   #2
Plumb or Die!
 
Join Date: Oct 2010
Location: BC, Canada
Posts: 321
Rewards Points: 250
Default

Tie stack to main drain


Makes sense, but never use 90's when you're going from vertical to horizontal, only from horizontal to vertical. And use 45's for any lateral offsets. When you tie back in to the septic line out, use a wye for a cleanout.

plumber666 is offline   Reply With Quote
Old 04-20-2011, 10:00 AM   #3
Member
 
Join Date: Jul 2007
Posts: 398
Rewards Points: 256
Default

Tie stack to main drain


thanks plumber666 - appreciate the prompt response.

so this means (apologies if I'm a bit slow on the uptake):

- I could use a couple of 45's where the stack initially turns (from the vertical into to the horizontal offset) - no 90 allowed here
- then I can use one 90 where my offset turns downs again (horizontal to vertical)
- then a wye to tie this short vertical run into the drain (with a cleanout)

would it make more sense to use a wye + 45 at the first bend (instead of 2 x 45's) - just gives me another access point to clean out (admittedly, it's just the short run across the offset, but could it hurt?)

I hope i have this right. the help and patience are appreciated.
rtoni is offline   Reply With Quote
Old 04-21-2011, 06:49 AM   #4
Plumb or Die!
 
Join Date: Oct 2010
Location: BC, Canada
Posts: 321
Rewards Points: 250
Default

Tie stack to main drain


More is better with cleanouts. You're totally on the right track, and obviously in touch with your "inner plumber".
plumber666 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Vanity drain vent stack Bip Plumbing 3 03-17-2011 11:32 AM
Tying into 50's style clay drain tile perimiter system/exposed Pit / Wall membrane alecmcmahon Plumbing 6 12-29-2010 07:23 AM
Water Backing up Though hole in basement dynamis Plumbing 3 06-15-2009 05:11 PM
Wierd Floor Drain "Backup" rawkintrevo Plumbing 9 06-04-2008 07:10 PM
The Bioswale, french drain, deck, drainage dilemma (long) seabright_sc Building & Construction 2 01-05-2008 03:37 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.