Hi,
weâre about to start building soon, and the building permit-free process was not objected to.
However, on the advice of the construction manager, we informed the local authority that rainwater would be infiltrated via a soakaway basin in the garden.
The authority states:
Rainwater must be infiltrated; a calculation of the infiltration system according to ATV-DVWK A-138 is required and must be documented. An infiltration test or an equivalent laboratory test is necessary.
We have no expertise in this matter ourselves. Iâve tried to read up a bit, but the whole topic seems very complex.
As mentioned, we specified a soakaway basin, so the local authority was able to approve it directly and did not have to forward it to the lower water authority.
One neighbor in our new development installed a soakaway tank and prefers it over a basin because it doesnât create a âwet biotopeâ in the garden.
Another neighbor who has already built (using the same earthworks company/gardening contractor as we are) installed a trench soakaway system.
Now Iâm wondering which option is better or more cost-effective?
Attached is the offer, which also includes the trench soakaway.
The soakaway tank seems to be quite a bit cheaper??
I hope you can help me decide the best infiltration method.
weâre about to start building soon, and the building permit-free process was not objected to.
However, on the advice of the construction manager, we informed the local authority that rainwater would be infiltrated via a soakaway basin in the garden.
The authority states:
Rainwater must be infiltrated; a calculation of the infiltration system according to ATV-DVWK A-138 is required and must be documented. An infiltration test or an equivalent laboratory test is necessary.
We have no expertise in this matter ourselves. Iâve tried to read up a bit, but the whole topic seems very complex.
As mentioned, we specified a soakaway basin, so the local authority was able to approve it directly and did not have to forward it to the lower water authority.
One neighbor in our new development installed a soakaway tank and prefers it over a basin because it doesnât create a âwet biotopeâ in the garden.
Another neighbor who has already built (using the same earthworks company/gardening contractor as we are) installed a trench soakaway system.
Now Iâm wondering which option is better or more cost-effective?
Attached is the offer, which also includes the trench soakaway.
The soakaway tank seems to be quite a bit cheaper??
I hope you can help me decide the best infiltration method.
Hi, I asked how to provide proof for this.
The answer is in the screenshot.
So, I have to prove it with photos, which means it should be fairly âreal.â
I canât apply for 7 x 4 m (23 x 13 feet) and then install only 4 x 2 m (13 x 7 feet) in the photos. I think that would be noticeable.
The answer is in the screenshot.
So, I have to prove it with photos, which means it should be fairly âreal.â
I canât apply for 7 x 4 m (23 x 13 feet) and then install only 4 x 2 m (13 x 7 feet) in the photos. I think that would be noticeable.
Hi, I had another contact with the UWB regarding the infiltration of traffic areas. Since I included this in the calculation, but made a mistake, I asked again whether I really have to connect them to the soakaway system.
Answer:
Traffic areas need to be drained somewhere because they generate runoff during heavy rain events. Whether this runoff is routed into the same infiltration system as the roof drainage or into a separate system (e.g., adjacent green area) is up to you.
It must be ensured that the rainwater does not leave your property.
So, point one: I will not connect it to the soakaway system. Should I discharge it into a green area? I will probably have some lawn and planting beds in front of the house, but how should I drain it there? Collect it and pump it back up?
Or simply install a drainage/trench channel at the edge or beginning of the property and direct it straight into the soil below without further piping?
Answer:
Traffic areas need to be drained somewhere because they generate runoff during heavy rain events. Whether this runoff is routed into the same infiltration system as the roof drainage or into a separate system (e.g., adjacent green area) is up to you.
It must be ensured that the rainwater does not leave your property.
So, point one: I will not connect it to the soakaway system. Should I discharge it into a green area? I will probably have some lawn and planting beds in front of the house, but how should I drain it there? Collect it and pump it back up?
Or simply install a drainage/trench channel at the edge or beginning of the property and direct it straight into the soil below without further piping?
B
Bieber08159 May 2017 20:51Typically, there is a 3 m (10 feet) wide driveway from the property to the public road. Water from this driveway must not run off the property. Solution: a channel at the end of the driveway, along the boundary. The channel is drained sideways; you can drill holes in a section of pipe and connect it, or create a small gravel bed where the water can infiltrate. Later, nothing will be visible above ground. This solution is sufficient for standard driveways.
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