Concrete rings for septic tanks: dimensions and installation

When developing the system of canalization of countryside and private houses, concrete rings are widely used today, which are one of the successful options for a sewage network of various types of buildings. In order to independently engage in such work, you need to learn more about the technology and size of the products described.

Dimensions of reinforced concrete rings

The most optimal sizes of reinforced concrete rings for the construction of a septic tank, a drain pit, a filter tank or a storage well are 1000/2000 x 900 millimeters, which corresponds to the diameter and height of the product. The required depth of the well can be regulated by the build-up of concrete products, they are mounted one on the other during the installation. However, on sale you can find different models, the internal diameter of which varies from 580 to 2000 millimeters. As for the height, it can be equal to 70-1000 millimeters.

Selecting a location before installing

Before you install the rings for the septic tank, you must select the optimum mounting location. This is an integral stage of the work. In the process of manipulation it is necessary to take into account the tolerances that are prescribed in the regulatory documents. For example, sanitary rules prohibit the disposal of structures in close proximity to residential buildings and sources of drinking water. Before proceeding to the layout of the site, it is necessary to take into account some provisions, among them it is necessary to highlight the fact that the distance from treatment facilities to residential buildings should be 5 meters or more. But do not make it more than 20 meters, otherwise you will face difficulties and additional costs associated with the construction of pipelines. A septic tank and a water source, such as a well or a well, should be 50 meters apart, as an obligatory condition for determining the location is the provision of access for special vehicles. Among other things, septic rings should be installed in a place where the groundwater table is not too high.

For reference

If the pipeline is still too long, then every 20 meters, as well as cornering, you need to install inspection wells. Do not forget about it.

Excavation: foundation pit preparation

Whatever the size of the concrete rings, the excavation will turn out to be quite large, since a filtering well and cleaning chambers must fit into it. Ideal option will be the use of special equipment for digging, as this will save energy and time. For lack of it you have to do everything manually. The soil should not be contaminated with untreated effluent, this indicates that a concrete base must be erected at the installation site of the settling tanks. In the role of drainage, you can use a concrete 50-centimeter pillow.

Council of the master

The system may require the use of concrete rings that have a blind bottom. They are ideal for sedimentation chambers and do not provide for additional bottom concreting. The base of the filter well requires additional training. The best option will be a pillow of sand, gravel and crushed stone, which is laid in a 50-centimeter layer.

Stacking of concrete rings

If you decide to install rings for a septic tank, then most likely, special equipment will be needed. Since the products have an impressive weight, and it will be difficult to lift them. To arrange a septic tank, it is best to use well rings that have a lock joint. They will have to pay about 1500 rubles. For one unit. Correct installation provides for the consecutive construction of wells.

Compound

The rings should be arranged according to the scheme, they should be connected as tightly as possible and cemented with cement mortar. If the ground is quite frequent in the territory, then for the additional fastening of the elements it is possible to use staples or metal plates. After the completion of the installation of the rings, it is possible to proceed with the laying of the pipes, and it should be borne in mind that during the laying of the system it is necessary to use elements with a bend that resemble a hydraulic seal. This will prevent the penetration of an unpleasant smell of sewage into the house.

Nuances of works

Concrete rings for a septic tank, which can be installed by any owner of their own housing on their own, are purchased in the amount of 9 pieces. This number must correspond to the number of holes. In a single row it is necessary to arrange three wells, the depth of each of which is 3 meters. Their diameter should be equal to 2.8 meters. These parameters are somewhat larger than the dimensions of the concrete rings. If it was not possible to rent the equipment, then the formation of trenches should be carried out by enlisting the help of another person. One master performs excavation, while the other takes out buckets with soil to the surface. After this, you can start preparing a concrete cushion and installing a septic tank. Each pit should have three rings. Slots between the joints are filled with liquid glass.

Sealing of joints and backfilling

Rings for the septic must necessarily be sealed, the seams between them are usually sealed with cement mortar or a mixture of the type "AquaBarrier". Outside, it is possible to carry out a lubricating waterproofing, and for reliability it is recommended to use weldable sealants. Seams need to be sealed on both sides. Sometimes the design is reinforced with plastic liners, which are cylinders of the required volume. They are placed inside a previously constructed well. If you provide a reliable waterproofing, the liquid from the septic tank will not fall into the ground. This extends the life of the structure and eliminates unpleasant odors.

Backfilling should be carried out after the completion of installation work. The soil removed from the excavation should be mixed with sand and distributed around the structures, parallel sealing the backfill. A lid is laid on each tank, which looks like a concrete slab with an opening. It is provided for the hatch. Seams need to be sealed according to the scheme described above, on this one can assume that the installation of the septic tank is completed, its service life will depend on how well the installation was made and also the waterproofing works.

Advice of a specialist

Concrete rings for a septic tank, whose dimensions are quite impressive and have been mentioned above, require the allocation of a large area for their installation. This can be considered a minus of such a sewage system. But if you decide to use the described technology, you should know that for reliability from inside the product you can cement, covered with bitumen.

Manufacture of reinforced concrete rings: material preparation

Rings for a septic tank can also be carried out by you. In this case, you will save on the purchase of new products. To begin with, it is necessary to prepare the equipment, namely a concrete mixer, special forms, a vibrator, a reinforced frame, and lifting devices. The concrete mixer can be replaced with a metal sheet and shovels. If you still refuse the idea of renting special equipment, then you need to take into account the moment that the weight of the finished product can reach 500 kilograms. Armored frame you can buy in a building store or weave it yourself using wire.

Self-made mold making

Rings for a septic tank, photos of which you can consider in the article, are sometimes made using self-executed forms. To do this, you can pick up drums of the appropriate diameter, as well as pipes or ducts. If there are no cylindrical shapes of the desired diameter, separate steel sheets can be used, which are connected to each other by door and window awnings. The connecting elements are fixed to the metal form by rivets or by welding. As practice shows, it is easier and easier to perform such products using plastic molds that are sold in stores.

Stages of manufacture

Rings for the septic tank, which can be installed only after the concrete has completely hardened, are manufactured according to a certain technology. The solution is placed in a 25-centimeter layer, and after it is trampled with a metal rod. You can remove the struts after pouring by half the height of the mold. At the final stage, the surface of the solution is leveled. To maximize the compaction of the composition, a vibratory installation can be used. The solution is poured, and the disassembly of the form is carried out after 4 days.

Advice to the home master

The temperature and humidity during the drying of concrete should be maintained at the optimum level. To achieve the necessary strength of the product should be kept for about 10 days.

The size of the future septic tank

The number and diameter of the rings for the septic tank were mentioned above. Before installing the well, you need to determine the amount of household waste per day. If the figure is not more than 1 cubic meter, one well will be needed to create the system. On average, one person spends 200 liters of water per day. If the total amount of impurities varies from 1 to 8 cubic meters, it is recommended to install a well with two tanks. If the costs are large enough, then you can mount a three-chamber septic tank.

Conclusion

If you still have not decided what size rings for a septic tank to choose, it is recommended to take advantage of the experience of many summer residents and owners of private houses that use products with a diameter of 900 millimeters. This is due to a number of factors. First of all, it is worth pointing out that at such sizes it is possible to avoid drying out of the contents during the hot season. If you use wider rings for a septic tank, their contents may dry out, and a natural colmatant forms on the bottom. This substance has a high hardness. To remove such waste, you will have to use a jackhammer and scrap. That is why it is necessary to choose rings for the septic tank, the dimensions of which were mentioned above. This will eliminate the need for repair.