Waste pipe through floor - best approach?

[smallsteve1]

With reference to the photos, I have solvent weld pipe coming out of the floor and need to adjust it as it is too far from the wall and will foul on the new units. Previously, they just hacked the units to get the pipework to fit!
First question is whether I should just move the pipe and bring it straight up out of the floor as they did previously, or alternatively use some form of connector that protrudes from the floor? Not sure of the advantage or disadvantage either way?
My other question is about pushing the pipe further towards the wall and into the recess (shown) and whether there are any reasons that I wouldn’t want to do this? It seems odd that they left the pipe so far from the wall in the first place and I can’t understand why it was done like that?
TIA

 

[denso13]

whether there are any reasons that I wouldn’t want to do this?

None I can think of. Just alter it to suit the units, there seem to be plenty of options.

 

[conny]

Cut below the floor level and extend back against the wall as much as possible. Maybe a sweep elbow, instead of a 90 degree bend, will help with the flow. The less bends the better the flow.

 

[smallsteve1]

Cut below the floor level and extend back against the wall as much as possible. Maybe a sweep elbow, instead of a 90 degree bend, will help with the flow. The less bends the better the flow.

Yeah, that was what I was thinking of doing and bringing short piece of pipe out of the floor. Then use a union joint to connect to the pipework that will go to the basin, which itself will also be solvent weld. The thinking behind this is that any future changes above the floor will be very easy to do, and it will also facilitate rodding access, should it ever needed to be done.

 

[just pumps]

You dont get much time when using solvent weld cement so best to have a dummy run on scrap pieces first. One trick is to mark both fitting and pipe where you want the fitting to end up.