Hi Everyone, I have decided to DIY a basement bathroom/plumbing project. I have been researching for a past few days, and I think I have figured out how everything should be setup. I have mocked-up my design in Sketchup, but would really like it if someone could check it out and let me know what I did wrong. Some Notes: -Main stack has a toilet,sink and shower upstream on the main floor. -Clean-outs and expansion joints will be installed at every vertical stack -There is a secondary 1-1/2" stack that vents out of the attic for the main-floor kitchen sink. (Not shown) -Shower vent ties into an existing vent that leads to the main stack. -I have not busted up the floor yet, so I am not 100% sure how to tie in this new line. Doing that tomorrow. -A dummy wall will be built in-front of the insulated exterior wall to prevent the pipes from freezing. A few things that I was wondering about: 1. Do you need to have a clean-out for a dedicated vent stack? (the one off of the shower) If not, I will route it better. 2. Do I even need a vent stack for the shower? Wet venting is permitted in Manitoba, however I am not sure if the vent for the sink is close enough. 3. Do clean-outs need to be fully exposed, or can I have them buried enough so that you can just remove the cap? 4. Does it make sense to run 4" pipe to the toilet, or is 3" good enough? 5. Does the toilet have to be downstream of the sink and shower. I am a bit confused by this. 6. I have two options for the sink vent. Either I can tie it into the secondary roof stack as a wet vent, or I can cut up the wall and tee in a dry vent above the kitchen sink. I am not sure if this existing 1-1/2" pipe is suitable to wet vent a toilet, 2 sinks and a washing machine. I doubt it. 7. I got the impression from [url=https://winnipeg.ca/ppd/Documents/Brochures/Plumbing-Installations.pdf]this file[/url] that I had to use double 45Deg fittings instead of a sweeping elbow when transitioning from horizontal to vertical. (See page 7 & 9) Whats the idea behind this? [url=https://drive.google.com/drive/folders/1ag0K4q4XpnGyP_vorQOowXdEaN7LaEcB?usp=sharing]Files & Pics[/url] Thanks in advance for all the help.

This is off of a water heater in the basement that feeds the master bathroom and an in-floor heating system. The build up is crazy. I have a Culligan filter and a water softener, water is great to drink, do laundry and do dishes. Had it tested when we moved in and it's good. We don't get this build up anywhere else in the home. What is it and what's it purpose? There is a discharge pipe going down just to the left of it. There are shut offs on either side of it that would allow me to replace.