Hello dear forum users,
I have attached a soil pipe plan and have some questions about it. I hope to receive helpful answers.
We received the following plan from our builder. I have added some measurements for reference. The blue circle indicates the soil stack from the upper floor. The vent pipe is routed through the roof there.
From my research, the main drain (soil pipe) is quite long, and I am concerned that the kitchen (on the far right) might face drainage issues.
Due to the upper floor layout, there is no real possibility to install an additional vent pipe through the roof at the end of the branch.
How would experts assess this situation overall?
I have attached a soil pipe plan and have some questions about it. I hope to receive helpful answers.
We received the following plan from our builder. I have added some measurements for reference. The blue circle indicates the soil stack from the upper floor. The vent pipe is routed through the roof there.
From my research, the main drain (soil pipe) is quite long, and I am concerned that the kitchen (on the far right) might face drainage issues.
Due to the upper floor layout, there is no real possibility to install an additional vent pipe through the roof at the end of the branch.
How would experts assess this situation overall?
Thank you for the feedback.
If I understood the majority correctly, it would make sense to run the kitchen vent line directly outside on its own. The spare connection near the staircase would probably have to be omitted.
In that case, only the core in the upper left would be led outside. Would it make sense to further divide it into two branches there, for example, to vent the utility room area (green) separately and together?
What would be more effective in terms of ventilation and exhaust?
If I understood the majority correctly, it would make sense to run the kitchen vent line directly outside on its own. The spare connection near the staircase would probably have to be omitted.
In that case, only the core in the upper left would be led outside. Would it make sense to further divide it into two branches there, for example, to vent the utility room area (green) separately and together?
What would be more effective in terms of ventilation and exhaust?
M
MachsSelbst21 Mar 2026 20:15I would lead each drain individually to the outside, following the shortest possible route. What is the reserve supposed to be for? What else could come in the stair area that would require wastewater drainage?
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