After about nine months, I accidentally discovered the following:
A plumbing company installed a drain pipe in my new bathroom with a slight slope over a length of 1.20 m (4 feet).
Why can I judge this so well? The pipes (from the toilet and shower) were installed from the bathroom down to the room below (the heating room), where they run along the ceiling to the main sewer pipe. It was this section on the ceiling that looked suspicious to me, so I held a spirit level against it – there was a slope.
Now the question is: Is this poor workmanship, or could it be legitimate or even common practice?
A plumbing company installed a drain pipe in my new bathroom with a slight slope over a length of 1.20 m (4 feet).
Why can I judge this so well? The pipes (from the toilet and shower) were installed from the bathroom down to the room below (the heating room), where they run along the ceiling to the main sewer pipe. It was this section on the ceiling that looked suspicious to me, so I held a spirit level against it – there was a slope.
Now the question is: Is this poor workmanship, or could it be legitimate or even common practice?
bauenmk202017 Feb 2021 09:33There will be a "sludge" remaining that unnecessarily slows down all subsequent "flows." The solids will then move more slowly ("mass inertia"), and the water will run off. As a result, more solids will accumulate, and eventually, manual stirring will be required. At the latest then, you will be advised to set a slope from the basin towards the drain.
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hampshire17 Feb 2021 09:44Is it an ultra-flat trap?
Jokes aside, there should be a slight slope, definitely not an incline, even if it has worked so far.
Jokes aside, there should be a slight slope, definitely not an incline, even if it has worked so far.
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Nanopixel17 Feb 2021 13:47Simply moving a clamp a bit further toward the ceiling won’t work: the pipe coming from above would first need to be shortened, as it won’t just slide together.
Yes, the construction isn’t that old yet, so I will contact the plumber again.
Yes, the construction isn’t that old yet, so I will contact the plumber again.
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fach1werk20 Feb 2021 21:50Do it. I can confirm the issue with the sump from my own experience. Also, it can ultimately lead to a serious pipe blockage followed by a damage assessment process and reinstallation. It would be good if you can agree on this beforehand and have the plumber install it correctly. Proper installation with the right slope is unavoidable. The pipes are even exposed, so it's not a big problem.
Best regards
Gabriele
Best regards
Gabriele
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