Do caisson wells to the hands - types , preparation and installation

If you install a stand-alone water supply for your house you need to consider a lot of subtleties.For example, at what depth the soil freezes in the winter.It may happen that the water pump and accessories be frozen, and the house will remain dehydrated.This will help prevent the caisson - the auxiliary chamber is located under the ground around the well below the level of soil freezing.

It is always maintained at a temperature above freezing, and the pipes and equipment are protected against frost damage and ground water.Also in a caisson equipment - an expansion tank, a pump control block, filter, - for a comfortable access and service.

Stages of work:

• Preparatory and excavation work.
• concrete caisson.
• metal caisson.
• installation of plastic and metal caisson.

embodiment caisson few.

caisson of reinforced concrete - robust and durable design, but its construction is not easy and may involve techniques.In concrete high thermal conductivity, so the design will need to insulate.

Caisson of bricks and reliable, and to insulate it will have less, but the cost of the material above.Like concrete, it exerts pressure on the ground, which may eventually lead to deformation of the pipe.
caisson of concrete rings can only build with the help of technology, as the rings themselves are heavy, and they need to establish as accurately as possible.Also, the high price of the items does not contribute to the popularity of this design.

Metal camera caisson can be cooked by yourself or purchased ready-made.Cons - it must be well insulated and waterproofed, as the metal exposed to corrosion.Of the benefits - the ability to design the assembly on the surface and the subsequent lowering of the land poses.If you have experience in welding and low-cost metal such caisson will cost inexpensive.

Plastic caisson - a modern solution.Finished designs are tight, do not corrode, weigh little and have low thermal conductivity, when properly installed, additional insulation is not necessary, and the temperature is below 5 degrees.Reinforced options are more expensive, but do not require casting concrete along the contour as a thin-walled.Plastic caisson will be cheaper than ready-made metal.

caisson sizes are selected depending on what kind of equipment it is supposed to establish, given that the man should be placed there for free maintenance of equipment as standard, it is 1m * 1m * 1.5m or 1.5m.The structure itself must be sealed if the water table is deeper than 3 m from the surface, and there is no flooding.In areas with a high groundwater table plastic caisson - the best choice.

Form caisson - square or round - depends on the material used.Caisson on the site it is possible to install yourself, although equipment and help significantly simplify the work.

Earthworks and preparation

Before the construction of the caisson wells dug around the pit.Its dimensions are determined by the parameters of the future of the caisson.Between his walls and caisson should be 20-30 cm of space.If there is a set of metal or plastic caisson, the pit is dug so deep that after filling pillows and install the upper part of the caisson stood above ground 15 cm. So it will not fall into the water when snow melts or when it rains.If constructed concrete caisson, the depth to do more to cover in-situ concrete with a layer of soil on it is flush with the ground.

Be positioned pit must so that the hole of the casing was not in the center, and slightly off the edge.Since the equipment in the caisson location was convenient.In itself the casing is welded sleeve length of 10-15 cm and a diameter slightly larger, Sanchez pipe itself.

dug pit obkladyvaetsya layer waterproofing, as which can be used roofing material, or film geotextile for foundation.At the bottom it is filled with 15 cm layer of crushed stone. It will be thick and the floor in the case of concrete caisson because moisture gets inside the structure, can return to the ground through the gravel.

from the caisson to the house dripped trench at a depth below the level of soil freezing -. 50-200 cm They are laid water pipes and pump electricity supply.If you are planning the construction of the concrete caisson, the trench is better not to connect with the excavation, then do the walls on one side will serve as formwork.

caisson of reinforced concrete

Before erect concrete caisson, you must make sure that the water table is deeper than 3 meters, since their high occurrence even concrete floor will not save the structure from frequent flooding and the appearance of dampness and mold.For concrete caissons measuring 1.5 * 1.5 m pit should be approximately 18 * 1.8 m.

7-8 cm from the wall begin to knit reinforcing grid with 30 cm increments. It should reach the top of the structure, but ifconcrete will be poured out in several stages, the valves can also be built up gradually.For valves use a rod with a diameter of 8 mm.

6-8 cm from the grid formwork is mounted according to the rules of the board, or OSB sheets.When using the boards it is better to build from within the film, fixing her stapler, so the concrete will not leak through the possible gap, and remove the formwork will be easier in the future.As reinforcement, shuttering can only be set at the height to which you plan to pour concrete on a given day.

When pouring the concrete, each layer provibriryvayut it manually or use Vibroplatformy.The lower portions of the concrete formwork for convenient feeding trough sufficient length of the sheet or sheets bonded OSB.After 4-7 days after the pouring of concrete, depending on humidity and ambient temperature, the formwork can be removed.Fully concrete hardens within a month, and only then can be installed in the caisson equipment.

also after complete solidification within its walls in the place of the supply pipes drill holes using the punch.Pipes should be included in the caisson through a special metal or plastic seals or zapenivatsya at the junction.During laying and construction of the pipe ends to better protect the metal sleeve slightly larger diameter.

Top concrete caisson is closed by a cover of the same material.For its filling made of planks, fastened bars on the screws, collect the shield.He must be able to withstand considerable weight of the concrete, so the lid of the caisson of 1.5 * 1.5 m must be at least 6 bars.On the prepared panel stack valves associated with the step of 15 * 15 cm. In the field, which will host the vent pipe and located hatch openings necessary to provide and install the pieces of pipe and other protections required diameter.

formwork Ready poured concrete, which will also dry 3-4 weeks.To prevent the formation of cracks in it, must be periodically moistened with water.After the final drying of the top of the caisson is filled Zamli, which serves as a good thermal insulator.Luke can be as metal and solid wood.

For better heat and waterproofing the walls inside the caisson treated mastic asphalt (how to do it, read here), or other staff with similar action and insulated with foamed polystyrene.

metal caisson

watertight caisson use plastic or metal construction, and the latter can be made independently, using the welding machine.For this fit steel 4 mm thick and a similar thickness or diameter of the tube (1 m are used in the industry).In the case of construction of sheet steel caisson choose a rectangular or square base with a side of 1 or 1.5 meters, height of construction - 1.8-1.9 meters.Carefully monitor the quality of the seams during welding.Within the walls of the metal caisson provide holes for the input pipe (bottom - Casing, side - water and cable), and in the upper part - to hatch.

Casing installation metal caisson trimmed to ground level and then welded to the hole in the bottom of the caisson.As in the case of concrete construction, it is better if it is not located in the center and closer to the wall structure.The top hatch and protruding above the ground of the need to insulate, for example by spraying foam polystyrene.

Installation of metal and plastic caisson

Sealed caissons mounted on the same circuit.A structure on the bars over the pit, and then removing them gently lowered so that the opening coincides with the casing.With this work can not cope without assistance.Mounted on a level aligned caisson.At the opening of the pipe is carried out and welded them connect electricity, install and connect the equipment.