Hi,
we’re 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. I’ve 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 doesn’t create a “wet biotope” 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 I’m 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.
we’re 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. I’ve 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 doesn’t create a “wet biotope” 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 I’m 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.
@Alex85 It depends on the size. Of course, in this case, you should use soil that is most suitable for infiltration. But the contractor also needs to make a profit somewhere.
For comparison, regarding the infiltration trench/filter pit system: was everything considered for the filter pit, or were only the prices for the filter pit taken into account?
For comparison, regarding the infiltration trench/filter pit system: was everything considered for the filter pit, or were only the prices for the filter pit taken into account?
However, there is probably more involved with the infiltration trench (rigole) that you might not have considered yet for the infiltration chambers (Iglus).
You also need an access point for maintenance, ventilation, and filter fleece to prevent the chambers from silting up. This means the costs will quickly become similar. Another advantage of soakaway crates (sicker boxes) is that they can be installed deeper, whereas infiltration chambers can only be installed horizontally.
You also need an access point for maintenance, ventilation, and filter fleece to prevent the chambers from silting up. This means the costs will quickly become similar. Another advantage of soakaway crates (sicker boxes) is that they can be installed deeper, whereas infiltration chambers can only be installed horizontally.