I have three drains, kitchen, shower, and bath sink (in that order from Norht to South) that will run along the same wall. The distance is only about 16 feet. I was planning to place only one vent at the kitchen drain thinking that should be OK since it is the faaarthest from the entry to the septic system.

Any problems with this plan?

Thanks,
Wayne

Waynemia - The answer to your question if I understand it right is ( YES ) YOU will only be venting your kitchen , You will also need to put vents on the others also . If you don't ,they will not work properly as they should, it will a little but you will start having problems. Save time and money in the future GOOD LUCK AND GOD BLESS ::: F.B.E.

:confused: I was not planning to place a vent for the shower or the bath sink. I don't understand what could go wrong because they are pretty close to each other. If I vent at the far end, wouldn't that prevent any issues?

Wayne... I saw your other post as well as this one. What you do not seem to understand is that codes are in place for a number of reasons... for example, if you do not vent a battery of fixtures correctly.. as required by code... traps can siphon, traps can gurgle, drain will no longer SELF SCOUR and will clog much more quickly.

Plumbing is an engineered discipline... it is not just sticking pipes together.

If you would like a detailed layout of how to pipe your system according to accepted codes we are more than glad to help... but please do not say you live in country and codes do not really matter. They are there to protect the health of YOU, YOUR FAMILY, YOUR TENANTS, and any person that buys the house in the future. Good luck.

OK... here we go. You will only need two vents for this system. One for the kitchen sink (1.5 inch vent), and a two inch vent off your shower drain to pick up the lavatory sink (must stay 2" all the way until connects into larger vent or until penetrates roof)... That is what they call a wetted vent. Here, you can use the vent for the shower as the drain for the sink because both are not usually used together... that should fix the venting issues.

As you get closer to doing this job, let us know and we will see if we can assist wherever we can. Good luck, and thank you for your positive response!!

:confused: I was not planning to place a vent for the shower or the bath sink. I don't understand what could go wrong because they are pretty close to each other. If I vent at the far end, wouldn't that prevent any issues?
Waynemia - I won't have to answer the rest of your question, ( MASSplumber2008 ) has already answered it for me, Sorry I didn't go into actual details last night as he did ,but do as he has said ::: ( GOOD ANSWER < MASSPlumber2008 ) GOOD LUCK AND GOD BLESS (IF I have helped rate my answers. ;;; F.B.E.:) ;) :D