ᐅ Is an 8 cm deep vertical groove possible in an exterior wall?

Created on: 24 Feb 2021 12:53
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X_SH5_X
Hello everyone,
in another thread, I already asked a few questions regarding my bathroom renovation.
Now I have one more question and I’m hoping to get some initial suggestions from you.
We want to convert a room where oil tanks used to be into a bathroom. In the corner you see in the photo, there will be a shower. I’m a bit bothered by the pipe coming down from the kitchen above, and I would like to "hide" it. The idea from my plumbing company is to build a stud wall to conceal the pipe. My tiler, on the other hand, thinks the pipe could be embedded in the wall (pipe diameter 8cm (3 inches)). This is a basement of a prefabricated house (basement masonry with a 30cm (12 inches) wall, and the upper floor is prefabricated).
I have read that vertical chases should be avoided. However, I would prefer not to build a stud wall if the pipe could be recessed into the wall. What do you think? Thanks

Kellerraum mit Betonwänden, sichtbare Abwasser-/Wasserleitung, kleines Fenster.
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nordanney
24 Feb 2021 13:25
danixf schrieb:

Personally, I would have installed the pipe inside the wall.
However, that does not comply with the DIN standard you mentioned ;-)

Technical table of wall thickness in millimeters with depth and width specifications
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nordanney
24 Feb 2021 13:28
X_SH5_X schrieb:

This is how the bathroom continues, so it would be a wall lining system rather than just covering the entire wall with drywall. The wall lining would then end at about 150-180cm (59-71 inches).

So? I wouldn’t even consider hiding the pipe inside the wall since you also need space for the water supply lines. You could then nicely install a concealed mixer valve, etc.
Use 100mm (4 inches) framing on the right, left, top, and bottom—or as many as needed. Then mount double drywall boards on it, and that’s it. Or you could build a shower niche (with only one door at the front). Then you wouldn’t even be able to tell that drywall was installed on the wall.
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X_SH5_X
24 Feb 2021 13:44
nordanney schrieb:

So? I wouldn’t even consider hiding the pipe inside the wall, since you’ll need space for the water lines anyway. Then you can easily install a built-in mixer, etc.
Use a 100mm (4 inch) frame on the right, left, top, and bottom—or as many as needed. Then double-layer the drywall on it, and that’s it. Or you could build a shower niche (so just one door in front). Then you wouldn’t even be able to see that the wall was built with drywall.

That was also my original idea, which I had more or less accepted. A frame wall about 150–180cm (59–71 inches) high to hide all the pipes, etc.
I would just prefer it looks nicer if the pipes were hidden inside the wall, but that doesn’t seem really practical. And if I look at the DIN standard you posted, such a slot in the wall should only be about 3cm (1¼ inch) deep, which I am exceeding here by almost three times.
It was simply the idea from my tiler that made me reconsider.
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danixf
24 Feb 2021 13:51
nordanney schrieb:

That doesn’t match the DIN standard you mentioned though ;-)
1614169492465.png

That would have been my guess too, which is why I said "personally." My layman’s opinion is that the DIN is interpreted quite strictly...
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X_SH5_X
24 Feb 2021 13:57
Ok, then it seems the only option would be to consult a structural engineer, but is it really worth it?!? I guess I’ll just build the stud wall after all...
11ant24 Feb 2021 14:38
Please show the entire bathroom, including the drainage plan from the building records. With just these two individual photos, it’s difficult to provide a well-founded opinion. Based on the limited information so far, I tend to lean toward the gut feeling not to change the existing system and to make a virtue out of necessity: niches for bath products, reading lights above the bathtub, and so on are generally useful additions in any bathroom.
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