hindoos wrote: o there will be some 90-degree bends, see the illustrative drawing below
In this configuration, the routes are only inspections at the bends of the sewage system (pipes) in order to be able to do anything with this piping in the future. Of course, they are designed so that the cabling can be pushed through them.
An alternative - in a conduit or some piping on the ground and together with it on the wall. Or strips or channels. You can do it differently - whatever is most convenient and economical.
