Dismantling toilet waste pipe?

[jack]

To be able to unsolder a pipe connection and to solder a new one I think I will have to remove the toilet waste first.

In the shower room below the bathroom the bathroom waste comes down the corner of the shower room, behind the waste are the two 15mm pipes for the shower room basin,

They did go under the floor tiles but I don't think thats a good idea so I want to re-route them externally round the walls and the shower plinth.

The waste appears to have glue at the joints and possible concreted in at the bottom but there may be a push fit there, not sure as I have not excavated some of the concrete.

So is it a saw and new adaptors or is there an easier way

 

[WHPES]

When you say "glue", is the pipe a salt glazed pipe or a lead or copper spigot stuffed with hemp and paste? If so, you are unlikely to get it out without damaging it.

 

[jack]

The pipe is grey plastic as are the fittings.

 

[WHPES]

It will be a solvent weld fitting then.