ᐅ How can you identify drainage pipes embedded in walls or floors?

Created on: 18 Aug 2021 17:15
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Heidi1965
You’ll probably laugh at me again:

In our hallway, the drain pipe from the upstairs apartment runs inside the wall. It’s not exactly centered. I have a photo of the shell construction here. The entire wall is 3.90 m long (12 feet 10 inches). How long do you think one of those white blocks is?

Problem: I bought a wardrobe, and the middle part needs to be fixed to the wall with anchors. It would be really unfortunate to hit the drain pipe while doing that. I believe the calcium silicate brick is 24 cm wide (9.5 inches). So I guess I have to roughly count the blocks. Or is there another method?

Unfinished interior with concrete support, wall blocks, piping, and building materials.


Empty room with white walls, gray tiles, orange stickers on the floor, and entrance mat.
seat8818 Aug 2021 19:41
Heidi1965 schrieb:

What do you use for tapping? And can furniture assemblers do something like that?


With your hand or carefully with something hard. A wooden spoon, a paintbrush handle, a broomstick, a rubber mallet, a screwdriver handle...
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wdreizehn
18 Aug 2021 20:37
Hello,

I would also expect that the position of the soil pipe could be determined by tapping the wall.

If not:
There is a very good photo where, using a simple proportion calculation and the known distance between, for example, the left sockets in reality, you could determine the central distance to the soil pipe from the starting point:

Construction site with two measuring lines: green 12 cm = 2.18 m, red 22 cm = 4 m on the wall.


Here, as an example, assuming the distance between the two left sockets is 4 m (13.12 ft) in reality and a measured distance on the photo of 22 cm (8.66 inches), this results in a central distance to the soil pipe from the left socket of 2.18 m (7.15 ft). Due to perspective, there may be deviations, but it should be accurate enough.

Best regards

Guido
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Heidi1965
22 Aug 2021 12:31
Thank you very much for the helpful tips. Our plumber located the center of the drain pipe and marked it with tape on the floor. The wardrobe is now hung/placed. The tape will remain there forever under the cabinet for all future generations.