ᐅ Pre-drilled Holes for Recessed Lights: Any Experiences?

Created on: 5 Aug 2023 23:18
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Stein2023
Hello everyone,

We would like to have openings for recessed lights in the precast concrete ceiling. Has anyone had experience with whether the holes are factory-made in the correct positions? Or did you measure and drill them on site?

Thank you very much
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Stein2023
6 Aug 2023 20:21
Allthewayup schrieb:

These are the Kaiser Halox 1282-74 with a diameter of 180mm (7 inches). In the hallway, we used slightly smaller ones but with 250mm (10 inches) diameter and accordingly larger (and more powerful) LED spots. In the bathroom shown in the photo, there are a total of 10 spots, although 2 are not visible. The walls were not built up high because this is the shower/toilet partition. This allows the steam to escape more easily from the shower area and prevents the corner from staying constantly damp.

*Edit:
The spots are divided into 4 circuits, which matches our idea of room usage and may not be fully applicable to all situations.

Thank you very much @Allthewayup! Sorry to ask again for more details, but could you please specify the models of the LEDs you used for the 180mm (7 inches) and 250mm (10 inches) versions? That way, I can check what lumen output might be needed for our own project and plan the corresponding Kaiser housings. That would be great.
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Allthewayup
7 Aug 2023 14:23
I can only request the models once the electrician is back from the company-wide vacation. Unfortunately, I was unable to remember them.
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xMisterDx
7 Aug 2023 17:04
WilderSueden schrieb:

Probably non-load-bearing. To make sure the wall doesn’t accidentally become load-bearing, it is either fully built only after the slab is poured, or the top course is left out and added later.

Sorry, but you rarely see such nonsense... just had to point it out. But it was funny.
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WilderSueden
7 Aug 2023 22:27
I don’t know how the work was done on your construction site. But a non-load-bearing wall must not be fully built when the ceiling is installed because it should not extend all the way up to the ceiling.

Technical drawing of a wall connection with joint, sealant, and insulation