Toilet over joist help

The toilet pipe is the left most pipe against the joist.

I want to move the toilet in the room, essentially 7' deeper into this picture and 3" to the left which puts it right over the joist.

The toilet will be in a 35" wide alcove and with the pipe in current position, will be 14.5" from the wall away from (to the right of) the (left hand) joist, thus, for the toilet to be right in the middle of the alcove, the pipe has to move 3" to the left, right over the joist. To fully avoid the joist, I'd have to move the pipe 4.5" which would put it 16.5" from one wall and 19" from the other wall (with tile considered over the now painted wall, that's 16" from one wall and 18.5 away from the other - not ideal - will look funny and maybe too close for comfort to the 16" wall.)

Any suggestions? I understand that an offset flange is a no-no.

Regards,
db

joist

Put a new joist on the other side, which would give you 3", and then bolt it to the existing one with occassional 2x spacers. Cut out as needed at the toilet and offset the drain line into the space you make. I have a feeling you are going to create a venting problem by the time you finish.

Good idea.

This is between floors - the view you are seeing is taken from a recessed light opening from the floor below. As I will be in a position to remove the subfloor due to tile removal in the bath, I can access all this from the top, at least 9' of it. I may even be able to access the next point of overlap with the next joist and install a complete parallel joist to the left of the lefthand joist. This will allow me to position the new toilet exact dead center in the new space!

db