Rainwater cistern - construction and benefits

03-18  Source: Network gathering  Views:1 

Advertisement

Rainwater cistern - construction and benefits

Take the water that comes from your roof.

Function and use of a rainwater cistern

The use of rainwater is becoming increasingly important. Drinking water is not only expensive, it is ecologically too precious to use it for purposes other than for drinking and for personal hygiene. The principle of a rainwater harvesting system is simple.

  • When it rains, a large amount of water hits the roof of your house. This collects in the gutter and runs into a downpipe. Without a gathering at the house of this water flows through the sewage waste in rivers or streams.
  • If a rainwater tank connected, cleans a rainwater filter this water. It flows into the lower portion of the cistern. Thus there are no turbulences, sheets or curved lines are needed. Thus, the dirt settles to the bottom.
  • The collector is also connected to the sewage system of the house. About an overflow, the water flows from the tank into the waste water when it is filled. Depending on the surface, the water can seep into a percolation basin in the ground.
  • The tank is fitted a pump to remove the water. As above is the cleanest water, the water flows through a float to the pump. So you always take the water, which is located at the top of the cistern.
  • If the water used in the garden only for casting, this pump is sufficient. If you want to use the water for flushing the toilet and washing machine, you need a house waterworks. This ensures a uniform pressure in the domestic water pipe.

The use of rainwater is useful for watering of plants, for flushing toilets and for washing in a washing machine. It is also due to brushing. The use of rain water for bathing, showering or in the dishwasher is not possible for reasons of hygiene.

Costs and benefits of rainwater harvesting systems

The costs for water and waste water costs rise. In the long run makes it more sense to use rainwater. One cubic meter of water cost, together with the fee for the waste water depending on the region in 2014 up to five euros, significant cost increases are expected.

  • Rain barrels are small rain collector. They cost less than a hundred euros. However, they are only suitable for the casting of potted plants and individual beds. A barrel of 200 liters costs about 30 euros. It pays for itself if you have saved six cubic meters of water with it. The 30 panels of the barrel.
  • If you want to collect more water, you need to set up a more complex calculation: Firstly, the required amount of water plays a role, on the other hand the potential yield of rainwater. The need depends on the size of the irrigated garden and on the number of people, if you want to use toilet and laundry with rainwater. The yield depends on the roof, the flashing of the roof and the region in which the house stands. Use a calculation tool from the Internet to determine the right size of the cistern.
  • A rough estimate, you need 3,000 to 4,000 liters of storage volume in a four-person household. The square meter of roof you can fill between 30 to 50 liters of storage. With a roof area of ​​50 square meters, is worthwhile only a plant with more than 2,500 liters, although you need more water. Does your roof 150 square meters, you can fill a memory 4500-7500 liters. Such a great memory does not make sense if you do not need the water.
  • Even a rainwater cistern at the optimum size gets paid only long term. A walk-in plastic tank with the art equipment for domestic water use in the house will cost about 2,000 euros, with a volume of 4,000 liters. These costs are amortized only after years. You must save 400 cubic meters of water, before the investment is worthwhile. This is usually only after ten years of the case. As the most expensive on the equipment, the technology, the cost of concrete cisterns are only slightly lower.

Installation of the system

there is a long way from the planning to the connection of the system.

  1. Determine based on your water needs and the possible yield the size of the tank. If you know this, you consider whether you are at the underground tank is possible.
  2. Check what type tank installing the best. For hard floors or a high groundwater level is a flat tank which requires only a small excavation depth, meaningful. Opt for a system that suits the income, the needs and the local conditions.
  3. Prepare the connections for the tank. You need three lines must have a slope of at least one percent each. One line goes from the downspout to the tank, the overflow to the sewer line and the tank for the hot water system of your home.
  4. If you do not have a separate hot water system in the house, install the cables from the planned input terminal of rainwater into the house to all toilets and washing machine.
  5. Insert the pit and the trenches in which the lines are intended to be, from. You need in the pit of movement. You should be a meter wider than the tank in all directions.
  6. Let the pit digging of a civil engineering company. With bucket and shovel it takes too long and is too cumbersome. This is also the ground condense, so that the tank has a firm footing.
  7. Once the pit is prepared so the tank can into the ground. Orders him to an appointment, shortly after completion of the pit. The company should put the tank into the pit. Unless you have chosen a concrete cistern, must be sealed with sealing compound this now.
  8. Lay the cables in the trenches and connect these. Install the pump and install a water level indicator.
  9. The construction company will fill the pit with rounded gravel with a maximum grain size of 8/16. Cover the gravel layer with fleece before applying ten centimeters of topsoil and plant the grass. Alternatively, you can concrete the area or cover with stones.

The planning and construction of a large rainwater cistern is costly. Ask if necessary a professional for help to determine the optimal size.

Related articles
  • Rainwater cistern - construction and benefits 03-18

    Take the water that comes from your roof. Function and use of a rainwater cistern The use of rainwater is becoming increasingly important. Drinking water is not only expensive, it is ecologically too precious to use it for purposes other than for dri

  • Water works in test - should you consider when choosing the instrument 01-29

    About a tested domestic waterworks get the optimal care. A Domestic Waterworks, as own water supply system (EVA) referred, is used to supply households with drinking water, which are located in buildings that are not integrated into the public drinki

  • Teamwork - its benefits through constructive cooperation 01-21

    Good teamwork is not self-evident. In the project teams are often assembled from various departments and for a limited period. If the project is to succeed, everyone should be able identify the benefits of this special team teamwork. Team work can be

  • Rainwater control - so expect wise homeowner 05-11

    In heavily built-up areas of any heavy rain for huge puddles provides. If you check with the municipality for the reason and the sense of stormwater control, you get a simple explanation. The sewage system can not withstand the loads without new inve

  • GEZ: unemployment benefits 1 - Find out exempting the obligation to pay fees 05-14

    pay the GEZ with unemployment benefits. 1 Unemployment benefit 1 do not have enough of the GEZ The GEZ would have as many license fee payers, therefore it was decided that recipients of unemployment benefits 1 No exemption received from the fees. Nev

  • Install cistern - Here's how 07-22

    A cistern looks decorative. A cistern is very decorative and is in many bathroom renovations of the alternative, which is installed on plaster, preferred. The biggest advantage is that it can be connected with a hanging toilet. After installation of

  • Calculate the cost of home owners in the construction of a garage 08-23

    The Garage incurs costs for homeowners. Gisela Peter / Pixelio When building a garage come to the homeowners sometimes high costs. Cost is of course dependent on the size and design of the garage. Further, the overhead can be reduced by proper perfor

  • Creating water tank for rainwater - Here's how 09-29

    Use rainwater in the garden. There are several ways to collect rainwater, in order to subsequently use for watering the garden or in the household. The easiest way is with a rain barrel, but hold only 200 liters. A cistern can hold up to 3 cubic mete

  • Construction of an orchestra - so you create a seating plan 03-08

    From surround sound for music enjoyment Sound and the structure of an orchestra In face of a music event you are in the role of the orchestra conductor schlüpfen.Dieser has to consider rule which local conditions. The place for the construction is al

  • A cistern built in the garden - how it works 03-09

    Building a cistern, making work. Gorgeous water from our own cistern What can be better than in water consumption, such. As the washing, cleaning and watering the garden to save by using the free rainwater? It has even been found that rainwater prote

  • Remove the cistern cover - Here's how 03-20

    The toilet should work. The cover of the cistern is tight The "classic version" is still the wall-mounted cistern with visible cover, in older installations also detached. In new buildings the cistern disappears into the wall, it is mounted unde

  • recycle rainwater to drinking water - so succeeds's 05-10

    Rainwater can be filtered to drinking water. What to consider when collecting rainwater To make rainwater potable water, rain water must be collected only once. Most often this passes through the roof and the gutter the water then in a pit, or in a l

  • Benefits of immigration - a digression 06-05

    Immigrants can boost the domestic labor market. Benefits of immigration for economic Demographic change is a big issue in many industrialized countries. Especially in Germany is the steady decline in births to the growing problem of the pension syste

  • Not a team player? - To learn constructive approach with colleagues 09-25

    A good team swings and holds together. Gerd_Altmann_Shapes_AllSilhouettes.com / Pixelio There is hardly Occupations nonteamed - They bring together Large Familiarize yourself aware of why your team is at all: There is a common vision: They all want f

  • Filter rainwater - Here's how 05-03

    Filter rainwater - this is possible in different ways Who collect a rain barrel to water has standing in his garden, can sing of the ongoing contamination of the collected water for a song. Again, one is forced to remove at least the top floating deb

  • Construction with base plate - advantages and disadvantages of the method 06-03

    The base plate transfers the power evenly into the soil. Construction of foundations If you build a fence or carport, only individual posts must be anchored. All it takes is a point foundation. They dig in the case simply depending anchor point a hol

  • Construction of a beam pump - instructions for beginners 08-29

    You can build a hand pump problems himself. Construction of a water transportation system There is already a well or a cistern available, a hand pump is ideal for water transport. Using a manual build the practical element easy on himself. Unlike a d

  • Construction industry: Occupations with winter construction - consequences simply explained 09-29

    Construction sites should not rest using the winter construction in winter. Established in 2006, entered into force law on the promotion of the year-round employment has regulated the seasonal short-time allowance for winter construction. Bad weather

  • make rainwater chute concrete - how it works 11-05

    To save water costs. Jakob_Ehrhardt / Pixelio To build a rainwater chute concrete Rainwater manholes are outstandingly to cover the demand for water for gardens. You do not need a lot of space and it is therefore also perfectly suited to small plots

  • Cistern seal - so succeeds's 11-30

    Seal the cistern. Different material for tanks Much houses have unused, brick septic tanks, which could provide enough space for large quantities of water in the ground, if you were just tight. Cesspools you can seal and thus convert into cisterns. C