Recent content by cobalt

  1. cobalt

    Vent sizing

    I think I just found the answer to my question 1). 5) At least one soil-or-waste stack or vertical soil-or-waste pipe must extend into a stack vent or into a vent pipe that is terminated in open air. That soil-or-waste stack or vertical soil-or-waste pipe must be as far as possible from the...
  2. cobalt

    Vent sizing

    Just referenced the National Plumbing Code (Canada). Multi-story wet venting is allowed provided (in the case of 2"): h) where a wet vent extends through more than one storey, the total discharge from any one storey above the first storey does not exceed 4 fixture units, so I should be good...
  3. cobalt

    Vent sizing

    ok i think i get it. it is virtually impossible that water draining down a 2" pipe from a draining kitchen sink would siphon a lower trap. but anyhow the code is the code. i guess the proper solution is to run a 1 1/2 ABS parallel as a vent stack which would be so much work. i would have to...
  4. cobalt

    Vent sizing

    thanks for your comments. the drawing is not detailed enough. have updated see below never though of that. stack 3: the bathrooms are connected through a vent stack and the number of units are OK for 2". i have 27 fixture units and according to code i am allowed up to 60 units for the length...
  5. cobalt

    Vent sizing

    in my jurisdiction roof drains are connected to DWV as there is no separate storm sewage system from housing. according to formula 2 x 2" vents would work but are there any other specific requirements. if you have time would you be able to address my 3 questions? thanks
  6. cobalt

    Vent sizing

    see diagram below My building is a 3 story building. The main drain is a 4" in the basement. I have one 2 soil stack and one 3" soil stack that is reduced to 2" above last branch at the third floor. Both stacks are then enlarged to 3" in the attic and exit the roof as 3". I also have a 3"...
  7. cobalt

    New Bathtub - Leak between rubber gasket and tub

    Hi, Could get some epoxy paste and rebuild/fill the area. https://www.pcepoxy.com/products/permanent-repair/pc-11-paste-epoxy/ I feel your pain. I installed a MAAX acrylic tub 4 years ago. It started leaking last week. Took the drain apart and noticed that the area under the tub around the...
  8. cobalt

    Best way to offsett DWV

    Thanks to Terry and everyone else for your input.
  9. cobalt

    Best way to offsett DWV

    Hi, First time posting. I am renovating an older building and want to correct some plumbing in the process. 1. The 3" stack vent was reduced to 2" above the last fixture at "B" then upsized back to 3" at "C" before it exits the roof. I assume I need to replace that section of 2" with 3" to...
  10. cobalt

    DWV routing question

    Hi, First time posting. I am renovating an older building and want to correct some plumbing in the process. 1. The 3" stack vent was reduced to 2" above the last fixture at "B" then upsized back to 3" at "C" before it exits the roof. I assume I need to replace that section of 2" with 3" to...
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