Bathroom drainage, number of downpipes, pre-walls, etc....

Yes, this was planned that way from the beginning in the workshop planning and was also agreed upon with the structural engineer.

Really "in" the wall or recess in the exterior masonry, so that the downpipe is always accessible? Why was this approach chosen? Rhenish greetings

Our structural engineer prohibited downpipes in the wall. We didn’t want them in the cavity insulation we either. So there was a small boxing in the living room. It’s not noticeable and absolutely inaudible (the water noises, not the boxing).

Grooves were chiseled into the wall into which the downpipes were inserted. Here is an excerpt from the ground floor work plan (utility room under the bathroom with the exterior wall to the garage):

Hello Olli,


Not only the thermal insulation .....

Rhenish greetings

Hi Bauexperte

You are of course right, the statics can also be affected in some cases.


Olli

There are two downpipes in the exterior wall with the window: one for the toilet flush with ventilation and another for the bathtub

I assume the first downpipe at the toilet also takes washbasins and the shower. Was it not an option to also drain the bathtub there (in the ceiling, under the ceiling in the room below)? By the way, a nice bathroom! Do you already live there? Can you always get to the toilet with dry feet? We have significantly fewer square meters available.... in the distance, bathrooms where the door and window are opposite each other seem easier to plan.

I assume that the first downpipe at the toilet also collects washbasins and shower. Was it not an option to also drain the bathtub there (in the ceiling, below the ceiling in the room underneath)?

Yes, exactly. We did not want pipes on the ceiling. And for the drainage into the other pipe, the height of the screed would not have been sufficient.

By the way, a nice bathroom! Do you already live in it? Can you always get to the toilet with dry feet? We have significantly fewer square meters available.... in the distance, bathrooms where door and window are opposite each other seem easier to plan to me.

Thank you. No, we do not live in it yet. The tiles are currently being laid. Why shouldn’t we be able to get to the toilet with dry feet? Just post your bathroom layout. Let’s see if something nice can be made out of it.