ᐅ Wastewater Plan for New Construction on the Upper Floor (Bathroom)

Dear forum members,

I would like to know if our wastewater plan is appropriate. We are concerned that there might be problems because the toilet drain pipe is too far from the soil stack.
Additionally, we find it strange that the shower is connected to the same pipe as the shower.

Could there be any risk of wastewater from the toilet backing up into the shower or causing odor issues?

BauKauf schrieb:

Also, we find it strange that the shower is connected to the same pipe as the shower.

I also find that strange.

Both the shower and the toilet have a trap. Under normal weather conditions, the ventilation should work properly.

The pipe from the toilet is positioned lower than the one from the shower. Normally, no sewage should reach the shower unless the drain pipe is clogged.