Yes, you start to worry whether it will still hold reliably despite all the holes^^. We recently renovated a bathroom in a bungalow that was self-built around 1960, and it looked somewhat like that as well. Moving the toilet was impossible because of that (the room was probably even smaller and also had access to a pit in the floor). How big is your little room?
We are also building right now; we are currently plastering one of the children's rooms.
I want to close the middle hole in case I can get everything through the others. Wastewater DN90, 5x 16mm for water+heating, and some electricity as well.
To stabilize it a bit, a metal mesh will be added to the screed.
The room is about 1.2x1.2m with a door opening inward.
How would the standard-compliant installation of cables be done on sloping ceilings? Actually, they are only allowed to be laid horizontally and vertically with a defined distance to the ceiling/floor/corners. Only in the middle for kitchens.
The original cables (blue) are laid like this. However, the previous previous owner retrofitted lamps in the stairwell. At the central height of the light switch, straight across to lamp 1 and then diagonally along the wall following the stairs down to No. 2 (red) and ending at the second switch.
What would be the correct route from the junction box to the first lamp in connection with the slope?