closet flange to closet elbow distance

[Pabs]

hey all

I'm installing a new closet flange for my toilet and was wondering how far I can extend the vertical pipe under the flange?


I need the extra room to go under a beam I plan to install in the basement.


I drew up a quick diagram to show what I mean
are both scenarios acceptable? which is better?

in option 1, what is the minimum for X?
in option 2, what is the max for Y?

thanks

Pabs

[hj]

The right hand one with the longer riser would not upset inspectors like the left hand one might.

[Pabs]

funny...I would have figured the contrary...

the one on the right it is then!

thanks!

[hj]

Some inspectors would have a problem with the left one offsetting downward before the vent connection, even though it has no real bearing on the operation of a toilet.