ᐅ French drains without ventilation or with ventilation?
Created on: 18 May 2022 20:35
C
Coletrickle_7808
I hope I’m posting this in the right thread.
Today, I had a conversation with two neighbors (new development area).
It was about the topic of infiltration trenches (mandatory infiltration according to the development plan).
All three of us have an infiltration trench. However, the two neighbors have a vent, and mine is without one, with the understanding that a vent is necessary to ensure water flows properly into the trench and can infiltrate.
Also, our inspection chambers are different. The neighbors’ chambers basically look directly into the infiltration trench. Mine does not. Here, you see two pipes coming from the house, and the infiltration pipe starts slightly higher up.
So my questions are: Has something been done improperly with mine? Is a vent necessary?
Today, I had a conversation with two neighbors (new development area).
It was about the topic of infiltration trenches (mandatory infiltration according to the development plan).
All three of us have an infiltration trench. However, the two neighbors have a vent, and mine is without one, with the understanding that a vent is necessary to ensure water flows properly into the trench and can infiltrate.
Also, our inspection chambers are different. The neighbors’ chambers basically look directly into the infiltration trench. Mine does not. Here, you see two pipes coming from the house, and the infiltration pipe starts slightly higher up.
So my questions are: Has something been done improperly with mine? Is a vent necessary?
C
Coletrickle_780819 May 2022 09:46Exactly. However, I am concerned about a possible ventilation.
Hi, I don’t think you need an additional vent for that diameter (it should be around DN 160-200, right?). But I’m not sure how fast the shaft fills up in your case. If the water level rises above the pipe, the drainage will be less effective without venting. However, with your setup, you risk backflow into the downpipes of your house. So that’s a problem anyway...