I am a bit confused at the moment.
The topic is backflow prevention.
Our architect included a floor drain in the basement and now tells me that this will be more expensive because she recommends installing a backflow preventer.
That’s clear so far.
However, since we want to protect the entire house drainage system against backflow, as a layperson I am now wondering:
My idea was to direct all drainage lines to the sewer, combine them there, and then install the backflow prevention at that point.
Our architect now told us that normally only the “critical” drainage points (i.e., the basement) are protected against backflow, and the rest is not (depending on the sewer’s position).
If we combine everything and install only one backflow prevention device, we should discuss that with the civil engineer, including the cost implications.
What do you think? What would be the recommended approach?
If I am reading the plans correctly, the invert level of the wastewater sewer is at 286 m above sea level, and the top edge of the basement floor is at 287.225 m above sea level.
The plan is to route all drainage (except for the floor drain) through the basement walls. So the house drainage pipes would be about 1.5 m (5 feet) above the sewer, and the floor drain about 1 m (3 feet) above the sewer.
The topic is backflow prevention.
Our architect included a floor drain in the basement and now tells me that this will be more expensive because she recommends installing a backflow preventer.
That’s clear so far.
However, since we want to protect the entire house drainage system against backflow, as a layperson I am now wondering:
My idea was to direct all drainage lines to the sewer, combine them there, and then install the backflow prevention at that point.
Our architect now told us that normally only the “critical” drainage points (i.e., the basement) are protected against backflow, and the rest is not (depending on the sewer’s position).
If we combine everything and install only one backflow prevention device, we should discuss that with the civil engineer, including the cost implications.
What do you think? What would be the recommended approach?
If I am reading the plans correctly, the invert level of the wastewater sewer is at 286 m above sea level, and the top edge of the basement floor is at 287.225 m above sea level.
The plan is to route all drainage (except for the floor drain) through the basement walls. So the house drainage pipes would be about 1.5 m (5 feet) above the sewer, and the floor drain about 1 m (3 feet) above the sewer.
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