Routing toilet drain around a joist challange

[Cengiz Tanc]

I want to connect my toilet drain to the waste stack, but there is a joist in the way, preventing a standard sloped horizontal run to a sanitary T down in to the stack. In order to keep ceiling height below at a maximum, I want to route the pipe between the joists as near to waste stack as possible, then turn vertical down. As far as I can tell I have two choices to go from horizontal to vertical:

1. A long sweep elbow, turned 45 deg. down to nominally vertical, then a short lenght of pipe in to a Wye fitting. The total length from flange to wye would be 4-6 feet. (Please picture #1 and 2 with a mock-up example)

2. A long sweep elbow angled 90 deg to vertical, a 45deg elbow to offset horizontally to the waste stack and connect with a wye again. (Please picture 3 with a mock-up example).

).

Are any of these up to Ontario code?

My other option is to install a wall-hung toilet which would allow me to run the pipe between the same joists as where the waste stack is located, for a standard install.

thanks

 

[Reach4]

I don't think there is an Ontario consideration. I think what you want to do is OK anywhere.

A toilet has its own trap built in. There is no need for a horizontal section. I am not a plumber.

 

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[Curiousgeorge99]

did u confirm the compliant solution? I’m having the same situation

 

[mariajackbos]

Thanks for these tips.