Hi,
in a fixed-price contract, the following is offered to us:
- Are the cistern and wastewater connection directly related?
- Do we need the cistern? What is it for? What happens if we don’t have it?
- What portion of the cost do you think it accounts for (it’s not listed separately, of course, I will ask the supplier as well)?
in a fixed-price contract, the following is offered to us:
Rainwater cistern and wastewater connectionWhat do you think?
Construction of a concrete cistern of approximately 5.4 m³ (190 ft³), up to 5 m (16 ft) from the building structure, including piping and backfilling, connected to the roof drainage system. The wastewater pipe will be routed from the foundation slab to the existing wastewater transfer chamber and connected.
- Are the cistern and wastewater connection directly related?
- Do we need the cistern? What is it for? What happens if we don’t have it?
- What portion of the cost do you think it accounts for (it’s not listed separately, of course, I will ask the supplier as well)?
I
Irgendwoabaier30 Apr 2015 21:56Bieber0815 schrieb:
Do you have a submersible pump in the cistern?Yes. The pump is connected directly to the garden tap. The cistern is located right in the driveway, where the downspouts before and behind the house are connected directly to it. The overflow of the cistern (which is still above the backwater level—we live slightly uphill from the street) leads to the combined sewer system.
EveundGerd1 May 2015 00:57Is there already a soil survey?
Our building authority also considered a cistern desirable. We had to install two pipes for the future wastewater system, which currently lead into the combined sewer system but will separate greywater and rainwater in the future.
We were unable to install a cistern due to pressurized groundwater. So, the authority's wish remained just that. We were happy about the cost savings.
Our building authority also considered a cistern desirable. We had to install two pipes for the future wastewater system, which currently lead into the combined sewer system but will separate greywater and rainwater in the future.
We were unable to install a cistern due to pressurized groundwater. So, the authority's wish remained just that. We were happy about the cost savings.
A cistern is only cost-effective if you have a large garden.
Using Ethernet cards, the water can be distributed quite easily in the garden and on balcony planters (via hoses).
Depending on the weather forecast, the garden irrigation system can then be controlled remotely from abroad without any issues.
However, if you only need about 20 cubic meters (700 cubic feet) of tap water per year for your home garden, a cistern is not necessary.
Two 210-liter (55-gallon) green bins are sufficient.
P.S. In some countries, it is perfectly legal to use this water for toilet flushing (with separate water circuits to the flush tanks). There is often green moss in the toilet, but the color is still acceptable.
Using Ethernet cards, the water can be distributed quite easily in the garden and on balcony planters (via hoses).
Depending on the weather forecast, the garden irrigation system can then be controlled remotely from abroad without any issues.
However, if you only need about 20 cubic meters (700 cubic feet) of tap water per year for your home garden, a cistern is not necessary.
Two 210-liter (55-gallon) green bins are sufficient.
P.S. In some countries, it is perfectly legal to use this water for toilet flushing (with separate water circuits to the flush tanks). There is often green moss in the toilet, but the color is still acceptable.
We are allowed to direct our rainwater straight into a gutter that flows into a small stream a few hundred meters (yards) away. This way, we avoid paying the stormwater fee.
Based on my calculations, installing a cistern for garden irrigation does not make sense for the next few years. Therefore, I decided against it and prefer to use regular tap water without a pump.
Edit: If the garden gets larger, there might be a water barrel at the downpipe behind the garage in the future.
Based on my calculations, installing a cistern for garden irrigation does not make sense for the next few years. Therefore, I decided against it and prefer to use regular tap water without a pump.
Edit: If the garden gets larger, there might be a water barrel at the downpipe behind the garage in the future.
How can I get rid of my rainwater if, according to the development plan, each property owner has to manage infiltration on their own property?
A soakaway is not a solution.
The problem here is that the construction company always initially includes a soakaway in the building application. Changing this later is difficult because the responsible official at the authority is hopelessly overloaded (small village, large new development area, and who wants to work temporarily in such a position for almost no pay?). So, I basically need the rainwater infiltration method finalized this weekend in order to include it in the application next week.
I imagine a tank or something similar buried somewhere in the backyard, where the rainwater from the roof would be collected and infiltrated. Irrigating the garden or similar is not necessary. Neighbors are installing a drainage shaft, but isn’t that even more expensive?!
A soakaway is not a solution.
The problem here is that the construction company always initially includes a soakaway in the building application. Changing this later is difficult because the responsible official at the authority is hopelessly overloaded (small village, large new development area, and who wants to work temporarily in such a position for almost no pay?). So, I basically need the rainwater infiltration method finalized this weekend in order to include it in the application next week.
I imagine a tank or something similar buried somewhere in the backyard, where the rainwater from the roof would be collected and infiltrated. Irrigating the garden or similar is not necessary. Neighbors are installing a drainage shaft, but isn’t that even more expensive?!
Payday schrieb:
How am I supposed to get rid of my rainwater if, according to the development plan, each property owner has to manage their own infiltration?To clarify... I specifically reviewed my old documents: it’s called a rainwater infiltration shaft, installed at the same time by the earthworks contractor along with the supply shaft (wastewater). The former is connected to the rainwater downpipes, collects the rainwater, and lets it infiltrate gradually, as required by the building authorities. In our case, 20 linear meters (66 feet) of pipes were included up to the downpipes. Including excavation, pressure testing for the supply shaft, and measurement: 3300 €.
No pumps, no fuss, or rainwater collection for the garden. What must be, must be... for us, this only became an issue in the last quarter of the construction phase, and by then we didn’t want to deal with any technical hassle.
Regards, Yvonne
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