Plastic caisson for wells: the criteria for the selection, installation

If you have a vacation home, the organization independent water supply - the most logical way. No worries with the presence or absence of pressure in the core networks, water quality problems, and most importantly - connectivity costs and payment. Artesian well will allow you not only to make up for all domestic needs, but also to fully watering the garden and orchardWithout looking at the counter. So that the system does not freeze, and it was possible to use it in the coldest months, need a caisson for wells. Plastic, metal or concrete - what to choose? This will be discussed in our material.

What is it, the caisson, and what it is in the area?

The main threat to the smooth operation of the well - freezing. If the temperature falls below the positive marks on a thermometer, water freezes. This leads to its expansion and extremely unpleasant consequences for pumping equipment and pipeline.

To keep your equipment and tools required for the well caisson. In a nutshell, it is: it's capacity of retaining temperature of the material with the cover. He not only gives the water in the well and pumping equipment freeze, but also eliminates the tenants from extraneous noise operating machinery.

How does the caisson

Firstly, caisson - it is not just the vessel. This design, which includes the tank and the equipment, supplies and water filtration.

The caisson is located at a depth of 1,5 ÷ 2 meters and it includes a casing.

Tip! If you set the tank outgoing pipe, it is possible to connect a hose for watering.

The caisson is made of a material that retains heat. It is clear that it should not be warm, but it is his duty - to protect the water feeding equipment from the frozen ground. With this task well cope polymeric materials, thick metal and concrete.

By what criteria are selected caissons for a well made of plastic

Plastic tanks are gaining popularity due to the reasonable price, long-term use and visual appeal. These caissons weigh little, so that their installation does not require lifting equipment. We can not say that these containers do not have drawbacks and the main one - fragility.

By what criteria are selected caisson:

• Ease of maintenance of the tank. It is not often, but occasionally you may need to cleaning and testing of equipment or its replacement. This means that capacity must have easy access to these manipulations.
• Dimensions suitable to accommodate all the equipment. Besides pump, The reservoir may be placed and heated filtering system.
• tank leaks. Any leakage can cause damage and bad damage expensive equipment. The most unreliable in this respect are considered to be concrete pools.
• The duration of operation. Water pump running, the impact of groundwater on the outside - it all aggressively affects the caisson wall. The stronger and more resistant to chemical attack by the material, the longer it will last.

How to choose the size of the box

Dimensions of the plastic tank must comply with its content. If you plan to install into pumping station and lead pipes, the capacity of half a meter in height and 90 cm in diameter is sufficient.

But to set the filtering and automatic control system and possibly the generator will require much more space. In this case, the caisson should be selected between 2 meters and a diameter of 130 cm.

Note! Many manufacturers offer a caisson well in order for your size. It is very convenient, because you can order the capacity not only to the required height and diameter, but also a form that is suitable for your environment.

What made plastic caissons

Plastic - durable and resistant to chemical attack by the material. He does not rot and rust, not germinate fungus and bacteria. It is these advantages of the material are so valued in the water tank. Another advantage of using plastic is that it can be cast solid form, without welds.

The caissons of complex polymeric materials will last at least fifty years and can be used with any composition of the soil. Plastic containers can safely be installed close to utilities.

The tanks are made of "edible" high pressure polyethylene. This polymer does not emit toxic substances, does not respond to aggressive impact of waste water and groundwater. In addition, the sale can be seen from PVC tanks, they are usually made from a base web and have welds. There are constructions of fiberglass and propylene. They treated epoxy compound and are not inferior to polyethylene in strength and durability.

Advantages and disadvantages of plastic containers

Like any building material, from plastic, has its pluses and minuses, which will affect the operation of the box:

Note! There are types of caissons in which the manufacturers provided "pockets" for pouring concrete. Such constructions are installed in areas with high groundwater table.

Plastic, metal or concrete? Why choose plastic

Let's try to make a comparative analysis of the three types of caissons for the wells that you can install in your home.

Parameters for comparison	Plastic	Metal	Concrete
impermeability	Fully sealed due to the absence of joints, no need for waterproofing	It has a place welding. Seams, even protected by, over time, begin to take place. When seasonal shifting of soil seams may burst under pressure of the soil.	Needs treatment waterproofing compoundsSince not tolerate constant moisture.
Features installation of the caisson for wells	Easy tank does not require any special equipment for installation	Metal caissons for the wells of high-quality thick steel weigh a lot, so that will have to mount them using the hoist.	If the devices are used for caisson concrete ring-without specialized equipment can not do. Fill the tank formwork can be done manually.
Strength	Plastic caissons are resistant to chemical attack, but may seriously suffer from inaccurate installation, soil deformation or inept purification. To increase the structural strength manufacturers equip reservoirs additional stiffeners.	Steel - durable material, which is not afraid of distorting ground motions. At the same time it is quite flexible, and, unlike plastic, does not burst under the strain. Steel caisson can be deformed, yet remain sealed when quality welds are made.	Reinforced concrete structures characterized by high strength. They are not afraid of any ground shifts. Quality concrete is not afraid to soil pressure and gross manipulation of the cleaning.
Resistance to corrosion and fouling	Polymeric materials are resistant to rust, fungi, bacteria, chemical resistance.	Steel caissons are most afraid of rust. To prolong their life, container is treated with protective compounds. If necessary, the protective structure can be updated from within, but to paint the outside of the steel caisson, it is necessary to remove the risk of deformation or damage, so it is no one else does.	In concrete surface fungus germinate and bacteria multiply. This tank will have to be periodically cleaned by special trains, but spores can penetrate so deeply that no cleaning will not help. Concrete It absorbs moisture and it destroys it eventually.
thermal insulation	Synthetic material has low thermal conductivity, so that the reservoirs is not necessary to additionally warm or heated. Only in areas north of St. Petersburg there is a sense in addition to insulate the outside container, especially the cover.	Metal containers require insulation. can be used for this purpose, any building insulation, Which is installed during construction of the installation.	Concrete retains heat poorly, so that such vessels are in need of insulation and heating in the winter, even in the middle lane.
floating	Lightweight containers, plastic pop up under the influence of groundwater, if it is not mounted on a concrete base.	Heavy steel tanks are generally not float. However, they also recommend a fix on the concrete base.	The heavy weight of the structure leaves her indifferent to this factor and concrete well does not require additional consolidation.
cost of	Price plastic caisson on average 20 ÷ 35 thousand rubles, depending on volume.	The price depends on the steel caisson wall thickness. Prices for container start at 40 thousand and above.	If you fill the pool with your own hands, it will be inexpensive, about 10 ÷ 15 thousand.

Note! Sometimes plastic caisson used to the cellar. The container placed outside the area or inside the house, in the basement, convenient to store vegetables and other foods.

Popular manufacturers of plastic caissons

firm "Onyx" among manufacturers of plastic caisson for wells popular. The price of products this manufacturer is very democratic, but the quality has earned many positive reviews from customers. Caissons "Onyx" are made from polypropylene, are lightweight and easy to install.

In addition, the manufacturer, users have reported production of Triton firms, Alta and Rodlex. All tanks of these companies have comfortable hatches, ladders and accessories, which greatly facilitates the operation of the caisson.

How to install a caisson for wells with their own hands

Photo	Description of work
	Before buying the tank and start promerte carefully and calculate the size. Examine the level of groundwater.
	Experts recommend buying a sealing sleeve PFRK. It is durable and good fit. Not all of the clutch, which are attached to the caisson, can boast of such data.
	Tanks are sold with a solid bottom. It is necessary to cut a hole on the inside of the sleeve diameter. On how well you made calculations and picked up a box depends on the tightness design.
	A hole is cut in the usual jigsaw.
	Around the holes in the marked locations are drilled holes for fasteners.
	Before installing the clutch all surfaces thoroughly degreasing solvents.
	Coupling treated with sealant. To install using paronitovye gasket.
	Install the clutch is more convenient with a partner. One work from the outside, the second - inside.
	While the sealant hardens, you can start digging the well under the caisson. The diameter of the well must be 20 centimeters larger than the diameter of the caisson.
	Outside sleeve coated with a waterproofing compound. It will keep the metal elements from corrosion and provide a sealing structure.
	The lid of the box should protrude above the ground on 7 ÷ 10 centimeters, and below it you will need to arrange a concrete pad thickness of about 2 cm. Keep this in mind when digging.
	The bottom of the pit is strengthened reinforcement. It is filled with concrete-sand mixture. For the establishment of "sole" required day.
	Before planting the box casing is trimmed to the desired height and lightly processed edges so they do not have torn sleeve.
	Installing a caisson better assistants. It requires a minimum of 4 people to plant it on the tube and evenly drop into the pit.
	Professionals recommend to the bottom of the caisson pour concrete-sand mixture layer of about 5 ÷ 10 centimeters. It will strengthen the bottom and will not allow the caisson to float.
	After the installation is supplied to the caisson tubes and connected them with the sleeves. Further excavation walls are filled with concrete in two stages: first at a height of 30 centimeters, then to the top. If you try to immediately fill the entire space of concrete, container emerge.
	The final stage of work is the installation of equipment for the well. In this arrangement the box is finished.

For details about installing the box in the following footage:

Price setting plastic caisson for wells

Self-assembly of the reservoir - not an easy task. If there are no assistants alone can not cope with such a case. We professionals such work would cost about 40 thousand, as much as he caisson. So think about it, it might still call an old friend and a liter of spirits to deal with this case? But, keep in mind that the work here is not one but at least two days, so that a liter can not do.

Summing up and go buy the caisson

So, independent water supply impossible without the box. If you plan to install such a structure on the site, make a choice in favor of the plastic tank. When properly installed and gentle treatment caisson will last more than one generation your family. Before you buy a plastic caisson for wells, learn the characteristics of the soil and make a list of necessary equipment. This will help determine the size of the container. The installation of the box and installation of equipment is best left to professionals.

Do not forget to share their invaluable experiences in the comments!