 
Over 698,000 strictly plumbing related posts
Plumbing education, information, advice, help and suggestions are provided by some of the most experienced plumbers who wish to "give back" to society. Since 1996 we have been the best online (strictly) PLUMBING advice site. If you have questions about plumbing, toilets, sinks, faucets, drains, sewers, water filters, venting, water heating, showers, pumps, and other strictly PLUMBING related issues then you've come to the right place. Please refrain from asking or discussing legal questions, or pricing, or where to purchase products, or any business issues, or for contractor referrals, or any other questions or issues not specifically related to plumbing. Keep all posts positive and absolutely no advertising. Our site is completely free, without ads or pop-ups and we don't tract you. We absolutely do not sell your personal information. We are made possible by: 
|
|
Author:
jlf611 (MO)
Forum,
I'm renovating a bathroom in a mid-60's split foyer. From what I can see, the current setup for the upper floor has 3 fixtures and a toilet using the 4" copper stack as vent.
The plumbing works well as laid out today...no dry traps, little to no gurgling, slow drains, etc. The KS/Disposal and the bathroom lav are tied in vertically as the highest fixtures on the stack--max run is less than 8' to the stack. The tub and toilet are connected downstream of the KS and lav, using a 4 x 4 x 4 x 1-1/2 copper sani-tee w/ inlet.
The 1-1/2" tub drain runs approximately 3.5' with 2-90 elbows on its way to the tee inlet. Toilet is about 1' to the stack.
I am looking to confirm that this an acceptable venting set up, should I decide to install a new bathtub in place of the old? Additionally, would this setup work if I were to install a shower pan versus the tub, with the understanding a 2" drain can be tied to the stack? Sketch attached.
I've scoured the UPC (code here in St. Louis) for answers, with little luck, so any help would be appreciated. Thanks in advance for your thoughts.
|
|
Post Reply
|
|
|
Author:
packy (MA)
the 8 foot distance from trap to vent stack is long.
if you want to make it closer to code just put a studor vent under the sink.
draining the tub into a side inlet san tee is allowed.
replacing with another tub is fine.
changing to a shower pan does require a 2 inch drain.
to my knowledge, the reason they want a 2 inch drain is so the shower drains faster and doesn't overflow.
a tub is about 14 inches tall so if the drain works slowly it won't overflow like a shower might.
years ago shower valves spit out many more GPM than today's heads do.
so if you are not planning on multiple heads and body sprays then 1 1/2 (although against code) should not be a problem.
|
|
Post Reply
|
Please note:
- Inappropriate messages or blatant advertising will be deleted. We cannot be held responsible for bad or inadequate advice.
- Plbg.com has no control over external content that may be linked to from messages posted here. Please follow external links with caution.
- Plbg.com is strictly for the exchange of plumbing related advice and NOT to ask about pricing/costs, nor where to find a product (try Google), nor how to operate or promote a business, nor for ethics (law) and the like questions.
- Plbg.com is also not a place to ask radiant heating (try HeatingHelp.com), electrical or even general construction type questions. We are exclusively for plumbing questions.
Search for plumbing parts on our sponsor's site:
Special thanks to our sponsor:
|