There are two cubicles with toilets. The wall shall be knocked down and I have to remove one of the toilets to place a bath. Both toilets have waste in the floor.
I was thinking of digging down and using a 1 & 1/2" reducer. I would bring the pipe up and place the reducer flush with the floor. The 1 & 1/2" would then be used as the waste for the new bath.
Can I do this without venting the removed toilets waste with a durgo?