Bath / Kitchen roughing layout questions

Users who are viewing this thread

akwaterman

New Member
Messages
2
Reaction score
0
Points
1
Location
Alaska
Greetings From Alaska !

Would sure appreciate your advice on proposed layout of our rough-in. Doing a small Garage to House conversion in Northern Washington State. Hoping to have a place to spend some time down south. Have built numerous houses here in AK but never had to permit or build to code.
If it worked all was good; we have our own plumbing challenges here, mostly due to extreme weather.

Our conversion plans call for a new 6" plumbing wall inside existing exterior wall, to make room for new plumbing. The existing plumbing is in lower right of illustration, inside existing structure. Was wondering what what would be the best location for clean-outs and fittings, and best
fittings to use (for example test plugs, wyes, etc). Many thanks for any info you can provide. Dan.
 

Attachments

  • plumbing           roughin sketch .png
    plumbing roughin sketch .png
    445.6 KB · Views: 24

wwhitney

Well-Known Member
Messages
5,237
Reaction score
1,321
Points
113
Location
Berkeley, CA
On your DWV layout, the tub is not vented properly. Horizontal wet venting is restricted to bathroom group fixtures, so the tub can't be wet vented by the kitchen sink and laundry standpipe.

Your options are to pull a dry vent off the tub trap arm before its drain join the kitchen sink/laundry drain. Or reroute the lav drain so that it hits the tub drain within the length limit (42" for a 1-1/2" tub trap, or 60" for a 2" tub trap) and fall limit (one pipe diameter), before the combined tub/lav hits the WC. That would let the lav wet vent the tub.

Also, the WC fixture drain is limited to 6' before venting. So when wet venting with the lav (or tub/lav), the distance from the closet flange along the pipe to the wye where the lav drain joins the WC drain has to be 6' or under.

Cheers, Wayne
 

akwaterman

New Member
Messages
2
Reaction score
0
Points
1
Location
Alaska
On your DWV layout, the tub is not vented properly. Horizontal wet venting is restricted to bathroom group fixtures, so the tub can't be wet vented by the kitchen sink and laundry standpipe.

Your options are to pull a dry vent off the tub trap arm before its drain join the kitchen sink/laundry drain. Or reroute the lav drain so that it hits the tub drain within the length limit (42" for a 1-1/2" tub trap, or 60" for a 2" tub trap) and fall limit (one pipe diameter), before the combined tub/lav hits the WC. That would let the lav wet vent the tub.

Also, the WC fixture drain is limited to 6' before venting. So when wet venting with the lav (or tub/lav), the distance from the closet flange along the pipe to the wye where the lav drain joins the WC drain has to be 6' or under.

Cheers, Wayne
Hi Wayne, many thanks for your prompt reply ! Wrong drawing got scanned, correct one had a vertical dry vent penciled in from tub drain to upper horizontal vent. The distance from WC to vent is less than 3 feet so that should be ok.

What are the best locations for clean outs ? Such as, in the vertical pipe above or below fixture p-traps ? Test plug fitting or wye + plug ? Or is a clean out wye allowed on horizontal drainpipe ? Really appreciate your help. Dan.
 
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks