venting help

Hi all, trying to finish my basement and have the following question (forgive the crappy drawing). I have existing plumbing rough-ins for a shower, toilet, and a sink. I would like to add a sink and/or washer marked in maroon (bottom right). The the green upward arrows are vents for the existing...

I'm having trouble fining a clear answer to the this question in the NSPC book... After a toilet vent extends vertically up a wall cavity into the ceiling, is there a limit to how far that vent may extend horizontally before it reaches the vertical part of the main vent stack that extends to...

We are roughing in a basement bathroom and I need help with venting. It will be very difficult to attach to a stack, so I am looking at AAVs and alternative options. Essentially, unless we rip out walls and go all the way to the ceiling with a new vent, I am left with two options: (1) AAVs, or...

Hello all, so to start off my house was built ~1920 with an addition some where in the 50’s, and again in the 70’s or so when from what it appears plumbing was added to the house. I’m not even sure if I’m accurate on when plumbing was added, but most every thing in this house was hodgepodged it...

Please see the attachment while noting I'm not an artist nor plumber. I'd like to find out if I'm going to be legal or what it will take to make it legal. On the 1st floor sketch, will there be a problem with the shower drain being so close to the vertical stack. Please note, there is a toilet...

Hi everyone, I live in Charleston, SC and being in the lowcountry our house is elevated. I want to put a 1/2 bath in our drive under which is directly off of our pool. By code I can't break up the concrete and put a regular toilet because of my flood zone. I want to install a Saniflo...

I am trying to install a double sink vanity in our master bath remodel. However, when I exposed the pipes to plan my plumbing I ran into a dilemma. How do I tie double sink plumbing into my current plumbing. The issue I have is trying to properly vent and drain the system. In the second photo...