ᐅ Wall chase 11.5 cm / Alternatives

Hello,

During our renovation, the house electrical system will be updated. The electrician who will carry out the work offered that I could do the chase cutting myself to save some costs. He would mark everything, set up the machine, and provide a brief instruction.

Most of the walls are 11.5 cm (4.5 inches) thick. Vertical chasing is not allowed there. Currently, there are also cable ducts installed. Is it still permitted to use these nowadays?

Horizontally, conduits with two conductors are installed. It would be possible to simply chase over them and install the new cables flush-mounted (such as NYM cables and network cables).

What alternatives are there for vertical chases, and what is allowed?

Best regards,
Jan

To my knowledge, vertical chasing should be allowed for wall thicknesses of 11.5cm (4.5 inches) up to a depth of 1cm (0.4 inches). However, certain distances must be observed. Horizontal chasing is prohibited for this wall thickness.

Edit: However, some vertical conduits are also installed in the 11.5cm (4.5 inches) walls. Could I simply follow their path and chisel new channels there? That way, I wouldn’t have to put additional strain on the masonry.

Musketier schrieb:
To my knowledge, vertical chasing is allowed for wall thicknesses of 11.5cm (4.5 inches) up to a depth of 1cm (0.4 inches). However, certain spacing requirements must be observed. Horizontal chasing is prohibited for this wall thickness.

That’s exactly what I have read as well. But there are definitely also empty conduits for the 2 wires in the 11.5cm (4.5 inches) walls.

If you have an electrician available, why not have the electrician mark it out?

He also drafts everything, I just wanted to get some information beforehand.