ᐅ Cistern overflow into a soakaway or infiltration pit

Created on: 15 Apr 2019 11:37
A
Andre77
Hello,

I am currently considering the sizing of the rainwater cistern and the connected infiltration shaft. According to calculations, a cistern with a capacity of just over 3000 liters (around 790 gallons) should be sufficient (rainwater from the roof). However, I would prefer to have a larger buffer and am thinking of something in the range of 4,000 to 5,000 liters (1,050 to 1,320 gallons). Now, my question is how to plan the subsequent infiltration shaft?

There are plastic shafts available with a capacity of 140 liters (37 gallons) for about 160€, the next size up is 500 liters (130 gallons) for around 350€, and another option is 900 liters (240 gallons) at about 430€. Does anyone have any ideas or experience using a similar combination? Introducing the water into the stormwater/sewage system should preferably be avoided.

Thanks!
A
Andre77
25 Aug 2019 12:42
How many shafts/channels/covers for underground "containers" are typically found on a property?

Wastewater shaft
Cistern
Infiltration shaft
Subsurface filter
(Driveway with drain to stormwater)
Rainwater shaft
....

These are what I can think of now.

Which of these, or which ones are absolutely necessary, which should you (still) have, and which are not needed?
H
hampshire
25 Aug 2019 14:48
We have 2 inspection shafts for wastewater and 3 for rainwater/rainwater cistern. For short distances, one shaft each is sufficient.