Bathroom renovation.
The east and west walls are approx 2100mm. The north and south walls are approx 1500mm. The toilet is in the corner of the south wall, that adjoins the west wall.
I want to move the toilet to the east wall, about 600mm down from the north wall.
I am unable to get under the floor slab, so I will need to cut a channel in the slab from its current position to the new position, approx 1500mm long and 100mm wide, ie from the SW corner to almost the NE corner, to accommodate the pipe for the new toilet location.
The floor slab is approx 50mm thick, with no reo. It is about 500mm off the ground. There is a single skin supporting wall runs the width of the terrace from N to S, under the slab, and is about 550mm from the east wall. The east wall is single skin brick, sitting on earth (this is a very old terrace). The west wall is a main supporting wall, that runs the width of the terrace, with a door opening beside the north wall of the bathroom.

Do you think it advisable to cut the slab?


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