Hello everyone,
We are currently working on building our single-family house. The building application has been submitted, and we promptly received the first letter from the building authority stating:
Rainwater must generally be infiltrated or directed into a nearby open water body, as long as this is possible without excessive effort and damage (§ 48 b Abs. 3 WG-BW).
After a phone consultation with the building authority, we were told that rainwater is not allowed to be discharged into the sewer system due to water protection zone III. The proposed solution (if you can call it that, as they basically said “there’s no way around it”) is a cistern. Permeable paving was also mentioned for the driveway, although we’re not sure what that is for. There is no water body nearby, by the way.
We had actually considered a cistern for watering the garden but excluded it due to the cost. Now we are being forced to install one despite the financial strain, so I have a question for you.
There seem to be countless types of cisterns (according to Google). Can you tell me which type would suit our purpose and where it’s most important not to cut corners?
Kind regards
We are currently working on building our single-family house. The building application has been submitted, and we promptly received the first letter from the building authority stating:
Rainwater must generally be infiltrated or directed into a nearby open water body, as long as this is possible without excessive effort and damage (§ 48 b Abs. 3 WG-BW).
After a phone consultation with the building authority, we were told that rainwater is not allowed to be discharged into the sewer system due to water protection zone III. The proposed solution (if you can call it that, as they basically said “there’s no way around it”) is a cistern. Permeable paving was also mentioned for the driveway, although we’re not sure what that is for. There is no water body nearby, by the way.
We had actually considered a cistern for watering the garden but excluded it due to the cost. Now we are being forced to install one despite the financial strain, so I have a question for you.
There seem to be countless types of cisterns (according to Google). Can you tell me which type would suit our purpose and where it’s most important not to cut corners?
Kind regards
NRW Lower Rhine 2021: 33 EUR net for a standard sewer pipe (100mm (4 inches)) and up to 10 EUR extra for the KG2000 pipe. Installation and disposal included, if necessary.
The more expensive suppliers, however, charged around 65 EUR net for the KG2000 pipe. So, 100 EUR all-in is quite a high price, but not completely unrealistic.
Regarding the topic of "not frost-free" and with a slight slope: Our home builder routed the drainage pipes under the slab foundation quite deep and left them there. The excavation contractor then had to dig even deeper to carry the drainage with a slope over a distance of 30m (98 feet)... Doing this by hand would have been really tedious.
The more expensive suppliers, however, charged around 65 EUR net for the KG2000 pipe. So, 100 EUR all-in is quite a high price, but not completely unrealistic.
Regarding the topic of "not frost-free" and with a slight slope: Our home builder routed the drainage pipes under the slab foundation quite deep and left them there. The excavation contractor then had to dig even deeper to carry the drainage with a slope over a distance of 30m (98 feet)... Doing this by hand would have been really tedious.
W
WilderSueden21 Mar 2022 14:36RE-1407 schrieb:
Regarding being motivated:
Of course, I would like to leave something to my children that I personally helped build, but as I already mentioned, if time, equipment, and expertise are lacking, I won’t just start forcing my way into doing something. I understand where you’re coming from, but you shouldn’t overdo it. Paving is done at the very end, so it doesn’t really matter at first whether you lay pipes under paving or grass. You can read up on experiences. Machines can be rented if necessary, and some equipment can be bought (preferably used) and resold if you only need it for a short time. Of course, not every task is suitable for DIY, but some are.
I also decided against doing the flooring and painting myself. Simply because with a job and a child, time is precious, and a construction site 45m (about 28 miles) away is too far to drop by quickly after work. But we will do the garden shed, carport, landscaping ourselves, and of course also the connection to the rainwater cistern. It’s really no rocket science.
M
motorradsilke21 Mar 2022 14:44netuser schrieb:
North Rhine-Westphalia Lower Rhine region 2021: 33 EUR net for a standard KG pipe (100mm (4 inches)) and up to 10 EUR extra for the KG2000. Including installation and disposal, if necessary.
The more expensive suppliers wanted around 65 EUR net for the KG2000. So 100 EUR all in is quite a steep price, but not entirely unrealistic.
Regarding "not frost-free" and with a slight slope: Our builder routed the drainage pipes under the slab quite deep and left them there. The excavator then had to dig even deeper to install the drainage with a slope over a distance of 30m (98 feet)... Doing that by hand would have been very tedious 😉 This was about rainwater pipes.
Yes, I would definitely never install the wastewater pipe myself. If sewage ever backs up under our driveway, I want to have someone responsible for it who I don’t see in the mirror every morning.
I will probably install the rainwater pipes myself, we’ll see.
However, I would rather not install a cistern myself either. Mainly because we don’t have much space to create a proper slope for the pit. Digging straight down probably won’t work with the mini excavator, and with our sandy soil, it doesn’t feel safe to me. When we excavated before, we even had a wall collapse where one person was trapped up to their waist. Fortunately, it ended without serious injury.
I will probably install the rainwater pipes myself, we’ll see.
However, I would rather not install a cistern myself either. Mainly because we don’t have much space to create a proper slope for the pit. Digging straight down probably won’t work with the mini excavator, and with our sandy soil, it doesn’t feel safe to me. When we excavated before, we even had a wall collapse where one person was trapped up to their waist. Fortunately, it ended without serious injury.
motorradsilke schrieb:
This was about rainwater pipes, right?You’re right, sorry. I was thinking of something else, or rather our civil engineer who took care of both tasks directly....
netuser schrieb:
You’re probably right. However, I was more thinking of a similar solution and personally don’t find it ugly or impractical at all... That’s exactly how I could imagine the second connection at the other end of the property. It really looks like something well thought out.
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