Hello! I’m working on the bathroom and have finished with the drains and pipes.
Now I’m going to pour concrete into the "pit" where the pipes are.

Any tips on concrete? I was thinking about some type of cellular concrete.
It’s about 160x30x20 LxWxD. I'm going to lay water loops over it and then level it.

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C
I would probably have used "regular" concrete, like coarse concrete from byggmax or similar, I think. EPS concrete probably doesn't provide much insulation value on that small area.

Reflecting a bit on your routing of the sewage pipes, it looks a bit hard to clean..? Or is it just me who thinks so?
 
cheetah1 said:
I would probably choose "regular" concrete, like coarse concrete from Byggmax or similar, I think. EPS-concrete probably doesn't provide much insulation value on that small surface.

I'm reflecting a bit on your sewer pipe routing, it looks a bit difficult to clean..? Or is it just me who thinks so?
I should add that there is a heated basement underneath.

What do you mean by difficult to clean? The 50 pipes to the vanity?

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90-degree angles and T-pipes down to the basement is what I was thinking about.

If there's only a basement underneath, it's definitely the easiest/cheapest with "ordinary" concrete.
 
Okay!

I have only relied on my rörkrängare! ;)

The old pipes were positioned in a similar way.
So he probably did what fit!
 
Sometimes two 45s can be easier from a cleaning perspective. But as mentioned, 90 bends work too.
 
45s are always better. The smoother the bend, the less risk of blockage.

And regarding the concrete.. buy coarse concrete and fill in the mess :)
 
By now, you've probably already finished the bathroom, but it might be good to know that it's not allowed to splice tap water in the wall without having an inspection hatch. But maybe you have one?
 
I think it looks like those fittings that you press with a special tool. And they are approved for use in wall joints, as far as I know.
 
They are no better than anything else, so they are not allowed either. It's okay to build in heating pipe joints, but not water supply joints. They must be inspectable from the outside, otherwise you might get serious water damage.
 
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