FlorianBaaske
2019-08-03 19:01:27
- #1
Thank you for the answers.
Maybe a few more details.
According to the city's regulations, it is not allowed to drain into the wastewater sewer, but it must drain onto the street. There, the surface water is directed into soak pits. Infiltration on the property is not permitted. We initially also considered a deep trench soakaway, but this is not allowed due to the soil conditions. Therefore, only overflow onto the street remains.
With some luck, it might be possible that the overflow of the cistern is located below the house’s floor slab, but still above street level. However, we will have backflow of water into the roof rainwater drainage pipes, as these pipes are already laid up to 80 cm deep. This cannot be changed anymore since these pipes are under the already finished floor slab. I don’t consider this a good solution even though the city considers it practical.
The pump would not have to overcome great heights (only a few centimeters). However, the pump should not start immediately and run for 2 seconds and then stop, especially during light rain, as there is too little water coming from the roof.
The cistern itself has 3000 liters. Are there pump systems that pump starting from a certain level X and then pump down to a lower level x-y? So that the pump does not constantly turn on and off during light rain?
A system that serves both irrigation and as an overflow system would of course be the best solution. I have not been able to find such a system so far.
Maybe a few more details.
According to the city's regulations, it is not allowed to drain into the wastewater sewer, but it must drain onto the street. There, the surface water is directed into soak pits. Infiltration on the property is not permitted. We initially also considered a deep trench soakaway, but this is not allowed due to the soil conditions. Therefore, only overflow onto the street remains.
With some luck, it might be possible that the overflow of the cistern is located below the house’s floor slab, but still above street level. However, we will have backflow of water into the roof rainwater drainage pipes, as these pipes are already laid up to 80 cm deep. This cannot be changed anymore since these pipes are under the already finished floor slab. I don’t consider this a good solution even though the city considers it practical.
The pump would not have to overcome great heights (only a few centimeters). However, the pump should not start immediately and run for 2 seconds and then stop, especially during light rain, as there is too little water coming from the roof.
The cistern itself has 3000 liters. Are there pump systems that pump starting from a certain level X and then pump down to a lower level x-y? So that the pump does not constantly turn on and off during light rain?
A system that serves both irrigation and as an overflow system would of course be the best solution. I have not been able to find such a system so far.