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Thank you again HJ. I didn't realize that the section in question could be horizontal but that makes sense. I ran that 2" vent section up at a 45 because I originally intended for it to be a dry...

It is drawn poorly. The branch rises at 45 degrees before going vertical. Thanks for the responses.

I've looked through quite a few threads looking for specifics on using a wet vent on a toilet arm under IPC. From what I can tell, IPC lists no specific toilet vent requirement. In the attached...

Let me try to answer the points you raised, regarding the floor joists, they are significantly over sized with 2x12 @ 16" OC spanning only 12'. I oversized from 2x10 because I knew there would be...

Thank you HJ. The roof vent is 3". There will be mulitple vents converging in the attic to this one 3" roof penetration and they will exceed 7 square inches in area.

Also, I posted additional...

The existing 3" wet vent stack serving one main floor bathroom group needs to run up an additional story (new 2nd story addition). For easier routing, is there a reason why the stack can't be...

Run the treadmill parallel to main level floor joists then cut out and box in one bay which should give you a minimum of 7 1/4" extra headroom (if empty, 2x8 construction). This would hurt the...

Clean with soap and water, let dry.

V out the cracks with a utility knife until you reach gypsum board or lath. Clean crack with wet sponge then fill with brown bag setting compound.

FWIW, I teed the incoming 1" service line immediately after the gas meter to feed my 140K btu water heater in the detached garage (used for heat) and ran the parallel 1" line to feed the house...

Since there aren't replies does this mean i haven't done anything horribly wrong?

Here's the scenario. The house is a 2 bedroom 1 bath ranch with a massive add-a-level additon. The addition extends out the back (kitchen) on the main floor and the second story covers the entire...