Prefabricated reinforced concrete well is one of the most popular and sought-after products, which is famous for its long service life and high mechanical strength and reliability. This is the most optimal ratio of quality and price. Such concrete products are built much easier and faster than other wells. The best installation time is considered to be early autumn, when the groundwater level is the lowest. A reinforced concrete well may have a variety of sizes , depending on the size of the rings.
Design features
The device of such wells is quite simple, but when building them, all the requirements of GOST and SNiP should be taken into account. These vertical hollow structures consist of:
- bottom with a deaf bottom;
- wall well rings with a diameter of 1000-1500 mm (they select the desired depth);
- special rings with a diameter of 600 mm, which adjust the height of the well and are placed in the neck;
- cover mounted on the hatch.
As a rule, prefabricated reinforced concrete wells are almost or completely submerged in the ground and are located below or above the groundwater level.
During installation, concrete is poured onto the bottom to form a tray part.
Reinforced concrete rings for a well
These concrete products form the neck of the well. Rings are a crate made of metal reinforcement and coated on top with concrete. Products are manufactured in accordance with GOST 8020-90 by vibrocompression from heavy concrete, so that the exact size and high density of the walls are obtained. Used for the formation and laying of reinforced concrete wells.
Concrete cover
This element of reinforced concrete wells is made of high-strength concrete. It is used as a floor slab at the completion of the installation of well rings. The covers are round in shape and have a hole on top, on which the hatch rests. This feature prevents foreign objects from getting inside and protects against contamination. The lid for the well is made of heavy concrete and without reinforcement, which ensures increased strength and reliability.
Well bottom
This is an important and necessary element for prefabricated wells, which is a circular reinforced concrete monolithic slab. The bottom is the first to drop into the well shaft. From above on it rings of a well and a cover with the hatch fasten. The efficiency of using a well depends on how well it is made and correctly installed.
Types and purpose of wells
According to the purpose, the reinforced concrete wells are divided into several types:
- Sewer (sewage, drainage). Designed to create a sewage system in places of pipe drops, on bends, etc.
- Plumbing. Serve as elements of heat and water supply, water supply network.
- Gas pipelines. They are elements of main gas pipelines.
By functionality, a reinforced concrete well can be:
- Lookout. Serves to control the operation of the entire system.
- Overwhelming. It is used when turning the network, in places where there are strong differences in pipes, when combining pipelines of different depths into one network, etc.
- Rotatable. It is used in the place where the pipes turn to prevent blockages. In addition, they are often used as a viewing point.
- Filtration (filtering). Necessary for wastewater treatment. Reinforced concrete well is installed above the groundwater level.
- Cumulative. It is used to accumulate wastewater and is most often installed at the lowest point of the site in order to ensure the optimal angle of inclination of the sewer pipeline.
Benefits of Reinforced Concrete
- The strength of concrete products. Reinforced concrete can withstand the loads that arise as a result of soil pressure, and due to its dense structure it is not washed out by groundwater.
- Reinforced concrete well can be equipped in any soil.
- The walls of the inner surface of the wells can be easily cleaned without the use of special equipment and qualified specialists.
- Long service life even when operating in places with high humidity and aggressive environments.
- Ease and simplicity of installation and repair.
- Concrete is inert, due to which it does not affect the quality of water when used for a key well.
- Low cost reinforced concrete wells. Its construction and further operation require minimal costs.
Mounting Features
The process of assembling reinforced concrete wells is carried out in several stages:
- First of all, it is necessary to clearly determine the place where the well will be built. It should not be installed on the slopes of ravines, gullies, river banks, because then they will take groundwater. In addition, an important negative factor is the pollution of groundwater by various chemical fertilizers that are used in adjacent areas and enter the ground through emissions and effluents from production facilities.
- After choosing a place, they begin to perform work on punching directly the well trunk (mine). This process is quite time-consuming and largely depends on the depth of the soil and the aquifer. Using modern technology allows you to perform drilling very quickly.
- The incoming water is pumped out.
- The filling and tamping of the filter layers is carried out. Then the first ring is carefully installed. The verticality of the shaft depends on the correct installation.
- To carry out the installation of rings, as a rule, they use lifting equipment or special devices installed directly above the shaft shaft.
- After each installation of the ring, metal brackets are fastened, which are subsequently used as a ladder for work in the well.
- The joints between the rings are sealed, and the free space between the walls of the concrete rings is covered with soil and carefully tamped.
- The hatch is filled with clay, ventilation is installed, and the neck is closed by a lid.
Reinforced concrete wells have more than once proven the reliability of piping protection from various kinds of damage through the use of high-quality materials, strength, and ease of installation.
Sizes and price
The size of the rings depends on the type of well. Today's construction market offers the following products:
- diameter - within 70-250 cm.
- average height - 50 cm (there are products up to 3 m)
For small wells in private construction, small rings are used. The most popular are:
- KS-7-1. The inner diameter of this product is 70 cm, the wall height is 10 cm, the width is 8 cm, and the weight is 46 kg.
- KS-7-10. This is a universal product, the height of which is 1 m, weight - 457 kg.
The price of concrete rings depends on their size. Larger products are more expensive.
For example, small KS-7-1 cost an average of 340 rubles. for a unit. The cost of KS-7-5 and KS-7-6 is 900-920 rubles. The price of universal grades KS-7-10 is approximately 1500 rubles. The largest rings will cost about 5,000 rubles.