I want to add a new toilet on the ground floor. The obvious way to do this is to run the soil pipe with sufficient fall (> 1 in 40) to an external wall, drill through the external wall, and then drop down to a suitable level to run everything underground to the inspection chamber.
Is that normally how it's done? Seems damn ugly to have a fat bit of pipe poking out of the wall near ground level The only alternative I can think of is to drill through the footings below ground level, and break out some of the blocks in the beam and block floor - neater but a lot more work, and might not be sufficient clearance between beams to be able to work effectively and do a proper job...
Constraints - the pipe has to go through the front wall as the side wall is the boundary with the neighbour's garden. The floor is a "concrete beam suspended floor system" which I presume means beam and block. The footings seems to be 1200mm of bricks below ground level supported by 300mm x 1000mm concrete, so there is plenty of space to drill below ground level.