The technology for self-casting concrete rings is not particularly complex. Some difficulties for the owner of the site in the manufacture of such products may arise, perhaps, only with the assembly of the formwork. However, in order for the rings to ultimately turn out strong and truly durable, the owner of the well will, of course, need to choose the right materials for pouring them.

What can you make a mold from?

Reinforced concrete rings are usually poured in formwork made from:

• steel sheet;
• boards

In both of these cases, the finished form is a prefabricated structure consisting of several parts. It is impossible to make continuous formwork for pouring reinforced concrete rings. After all, from the form of such a design, after the cement mortar has hardened, ready product It will be very difficult to get.

Formwork of this type is cut from sheet steel using a grinder with preliminary cutting. Next, the metal is given the appropriate shape by bending and secured in this position.

To make a wooden mold:

1. Four narrow metal rings are welded. The diameter of these formwork elements is selected in accordance with the internal and external diameter of the future reinforced concrete product.
2. The rings made in this way are sheathed vertically with boards. The lumber for assembling such formwork should not be too wide.
3. Divide the internal and external parts of the resulting formwork into compartments.
4. Locks are made to connect the arched parts of the mold.

What dimensions should a reinforced concrete ring have?

When choosing the dimensions of such a product, you should, of course, primarily focus on existing standards. After all, in the end the ring should be as durable as possible. Otherwise, when constructing a well, such a product may simply fall apart.

On the market today you can buy mostly standard rings with a height of 900 mm. There are other versions of similar products on sale - 500, 450 and 350 mm. But ready-made rings of this variety are considered additional ones and, when strengthening the walls of wells, are most often used only at the very top. That is, if the standard ring does not fit in height.

At home, rings are also usually cast with a height of 900 mm. But moving products of such dimensions to the installation site, even by rolling, can still be difficult. Therefore, in the absence of assistants, it may make sense to make rings of smaller height.

The standard diameter of concrete products of this type is usually 1-2 m. In this case, the wall thickness of the ring can vary between 70-140 mm. Such standards are provided for products cast from concrete alone. It is recommended to fill the rings with your own hands with additional reinforcement. When using a metal reinforcing frame, the thickness of such products, made independently, may be less - 60-80 mm.

What you need for filling

In order to make a concrete ring with your own hands, you need to prepare:

• cement, sand, gravel;
• mesh for sifting sand;
• concrete mixer;
• shovel, wheelbarrow, buckets;
• plastic film.

You will also need a reinforcing rod to strengthen the walls of the product.

How to choose the right filling materials

During operation in a well, concrete rings will be constantly exposed to water. And therefore, in order for them to last as long as possible, only the highest quality materials should, of course, be used for their manufacture. It is advisable to use hydrophobic cement for pouring. But you can also use regular ones, brands no lower than “400”.

Quartz sand is usually used as a filler when making concrete rings with your own hands. The presence of any organic inclusions in this material can have a very negative impact on the quality of the finished product. Therefore, before mixing the solution, quartz sand must be sifted and washed with water.

Another component of the mixture for filling well rings is gravel. It is believed that only granite material of this type is suitable for the manufacture of such reinforced concrete products. To fill the rings, you should select cube-shaped gravel that is not too rounded. Plate material of this type is not suitable for such products.

When choosing gravel, among other things, you should pay attention to its fraction. Such a filler should not be too fine. It is also not allowed to use gravel for filling that contains stones larger than ¼ of the wall thickness of the future ring.

How to make a solution

It is best to prepare a solution for filling well rings in a concrete mixer. Manual kneading is also acceptable. However, in a concrete mixer, the finished solution will in any case be of much higher quality. This is due to the fact that when using such equipment, the mixture comes out much more homogeneous in composition.

Of course, you shouldn’t make the solution too liquid for making rings. Otherwise, the product will end up being fragile. The consistency of the finished solution should be such that it does not flow from the shovel and does not stick to it in lumps.

A solution for filling rings is usually prepared in a cement/gravel/sand ratio of 1:2:4. The reinforcing frame for the ring is knitted using a steel rod with a thickness of at least 8 mm. Rusty fittings are not allowed to be used for the manufacture of such products. Such rods must be cleaned before use.

Laying mortar into formwork

The rings for the well need to be filled in one step. These products are relatively small and quickly laying the mortar with your own hands will most likely not be difficult. When pouring, among other things, you should ensure that no air bubbles remain inside the cement-sand mixture. To do this, the mortar in the formwork must be pierced from time to time with a steel rod.

If the rings are supposed to be installed in a ready-made well using special equipment, at the manufacturing stage they should be poured steel hinges for attaching the cable. Subsequently, when assembling the reinforcing layer in the shaft, these elements will have to be cut off with a grinder.

After laying the solution, the upper part of the ring must be covered with polyethylene. The formwork can be removed from the finished frozen product no earlier than after two days. You should not use the rings for their intended purpose right away. You should wait for the concrete to mature. This process usually takes at least 28 days. During the first two weeks after pouring, the finished rings must be moistened with water at least once a day. This will prevent the top layer of concrete from cracking.

Installation of rings

Wells already existing on the site are usually reinforced with concrete rings using special equipment. As a last resort, you can use some homemade fairly reliable lifting mechanism. But in any case, work on installing rings in the well should be done as carefully as possible. They must be placed in the mine only with assistants.

A new concrete well on the site can be installed without the use of special equipment or additional mechanisms. In this case:

• the ring moves by rolling to the site of the future well;
• the product is turned over from its edge to its normal position;
• soil is removed from under the ring in portions until it is buried in the ground to the upper edge;
• the upper edge of the product is coated with concrete mixture, after which the next ring is installed.

According to this scheme, work continues until the required depth is reached. Next, the rings are secured with plates or staples so that they do not move. The work is completed by making a cover for a new well, for example, from sheet metal and installing a bucket lift or pumping equipment.

Autonomous water supply in dacha and suburban areas is carried out using water from a well. To form a source shaft, from 1 to 25 reinforced concrete rings are required. The high cost of products becomes an unbearable burden for some estate owners, but there is an alternative - in-house production. Do-it-yourself molds for well rings will allow you to manufacture building materials for equipping a well or septic tank at minimal cost.

Purpose and design of concrete rings

Reinforced concrete rings are used during engineering and technical work at construction sites. The products are widely used in the installation of autonomous sewage systems: inspection and filtration wells, septic tanks. They can be found when equipping city roads, bridges, highways, facilities landscape design and treatment facilities.

Reinforced concrete rings

Information. Standards for the production of reinforced concrete rings are regulated by GOST 8020-90.

The strength and durability of the structure allows them to be installed in wells for water extraction.

There are several types of products:

• flat end rings;
• rings with a locking end;
• repair;
• supporting

Characteristics of locking rings

For the construction of wells, products marked KS - wall ring are used. Concrete rings with a lock are a structure that has recesses in the end part. The function of the lock is to prevent the rings from shifting under soil pressure and to ensure tightness.

Attention. Reinforced concrete rings with a flat end can shift under the influence of quicksand, blocking up to 40% of the well shaft.

Characteristics of standard rings

Well rings are a cylindrical structure with a frame made of metal reinforcement. For the production of elements, concrete of a grade not lower than M200 is used. The demand for products is explained by their positive qualities:

• strength - the material does not collapse under the influence of moisture and loads;
• durability, service life is 50 years;
• environmental safety, concrete does not have a negative effect on water;
• tightness of the structure - a well-formed structure does not allow moisture to pass through.

Ring design

Production of well rings

Self-production of concrete rings is economically justified if about 10 products are required for construction. The cost of producing concrete structures is significantly lower than their retail cost, even taking into account the fact that molds will have to be made to make well rings. And if you include the money saved on delivery, then the last doubts about the feasibility of the process will disappear.

Factory bench well rings are made using the vibration molding method. This means that the concrete solution is placed in a special form and compacted using vibration. Without this process, high strength cannot be achieved. A mixture of concrete and fillers is prepared directly at the work site.

The factory vibration mold consists of two metal cylinders of different diameters. The outer part, reinforced with stiffening ribs, has a fixed vibrator with an electric motor. The unit helps compact the concrete mixture. A cone is welded to the inner ring, acting as a lid. The equipment is highly productive, but also costs a lot. If making well rings is a one-time event, then there is no point in buying equipment; it is better to do it yourself.

Factory ring mold

Advice. When purchasing a factory-made mold, pay attention not only to the dimensions, but also to possible modifications: the manufacture of transportation loops or through eyes. The durability of the product and the accuracy of the geometric dimensions of the produced rings depend on the thickness of the metal of the cylinders.

Formwork for well rings is divided into external and internal. The distance between the parts will be the thickness of the walls. Their size is determined by the diameter of the products:

• 70 cm – 7 cm, without reinforcement – ​​12 cm;
• 100 cm – 8 cm, without frame – 14 cm.

Attention. To manufacture products with a lock on the end, a more complex shape will be required.

Standard components include a lid and a bottom. Their sizes correspond to the diameter of the rings.

Wire frame for reinforcing rings

Size range of products

Reinforced concrete rings used for the installation of inspection, sewer and water supply wells have several basic parameters: diameter, height, wall thickness. Classifying the sizes of reinforced concrete rings for a well, they can be divided into 3 groups:

1. Large - products with a diameter of 2 m, weight up to 2.3 tons, height up to 90 cm
2. Medium - internal cross-section 1.5 m, weight - 0.9-1.3 t, height up to 90 cm.
3. Small – diameter – 1 m, weight 600 kg, height up to 90 cm.

These are popular sizes of well rings; if necessary, you can purchase or manufacture additional elements of any height and diameter, depending on individual needs. The strength of products depends on the thickness of their walls and the presence of a reinforcement cage. When choosing a parameter, take into account the type of soil, its tendency to compression and frost heaving.

Information. Products are marked with the internal diameter of the rings in decimeters.

Calculation of the volume of reinforced concrete wells

For production, an indicator such as the volume of concrete required per product is required. The volume of the well ring is calculated by the formula:

For example, for KS10-9 V=3.14x90x (58 2 -50 2) V=0.24 m 3.

The volume of the entire well is calculated using the formula: V=Lx3.14xR 2

L is the height of the structure, R is the radius of the rings.

Making a mold for rings with your own hands

Materials

What materials can formwork be made from? Any available materials strong enough to make several products will do:

• boards;
• sheets or metal products;
• plastic.

Wooden formwork

Metal forms will be the most reliable and durable option; such formwork can be rented out in the future. The use of barrels or pipes of the appropriate diameter will simplify production. Welding individual sheets and then bending them takes more time and requires physical effort.

Homemade mold from metal sheets

Advice. Plastic cylinders are also an acceptable option, especially since polymer containers are sold in all sizes.

Technology

A metal mold for the production of well rings, the material for which is two barrels of different diameters, is constructed using a simple technology:

1. The bottom of both barrels is cut off.
2. Vertical markings are applied to the inside and outside of the larger product, dividing it into two equal parts.
3. Using a welding machine or rivets, metal corners are attached to the outside of the cylinder. They are located along the entire marking line or in three pairs: at the top, in the middle and at the bottom. The elements must be located exactly opposite each other.
4. Holes are drilled in the corners for bolts that will be used to secure the form.
5. The barrel is cut with a grinder with inside, work carefully so as not to touch the welded fastening parts.
6. The next stage is preparing the inner cylinder. A smaller barrel is also marked with vertical lines.
7. According to the markings, corners are welded for subsequent connection of parts. In this case, they are placed on the inside of the cylinder.
8. The barrel is cut from the outside.
9. For convenience, handles are welded to the cylinders - to the outside from the outside, to the inside - from the inside.

Attention. The inner cylinder is divided into one and two thirds; the smaller part can be easily removed inside when dismantling the formwork.

Making well ring with your own hands, we must not forget about the elements for moving it. These can be metal mounting loops connected to a reinforcement frame or through holes. The second option is more acceptable, because when installing wells, the hinges have to be cut off. To make eyelets for the slings, holes are cut in the mold and wooden round blocks 4-5 cm thick are inserted.

Preparation of concrete solution

In order for the concrete to be of high quality, it is necessary to follow the recommended proportions of ingredients. The calculation of shares is carried out based on the base - cement:

• sand 2:1;
• gravel 3:1, 4:1;
• water – 0.5-0.7.

The gravel is pre-soaked in water. Sand and cement are mixed first, then water is added. After mixing the solution, add gravel.

Advice. The brand of concrete used affects the strength and durability of the products, so you should not skimp on the components of the solution.

The production site is located away from sunlight, under a canopy. Rapid drying of moisture from concrete reduces its strength. It is better to work on making rings for a well of any diameter at a temperature not lower than +8 0.

Concrete mixer for mortar

Ring production technology

For production you will need the following materials:

• cement M400;
• sand;
• gravel;
• fine crushed stone;
• water;
• metal reinforcement or wire 6-10 mm.

To carry out work on the manufacture of well rings, a flat platform is required; it is important to set the mold level. The list of equipment for the production of reinforced concrete products includes:

• springform;
• concrete mixer;
• vibrator for concrete;
• lifting device.

Before starting work, a frame is assembled from reinforcement; welding or wire is used for this. The process then proceeds in the following sequence:

1. Place the form on a flat surface or metal stand. The distance between the inner and outer parts is adjusted according to the wall thickness. You should check that there is an equal gap around the entire perimeter. The halves of the inner and outer cylinders are pulled together using bolts inserted into the holes of the welded corners.
2. Spacers are installed between the cylinders. These can be metal pins or wooden wedges placed at 2/3 of the height of the structure.
3. Concrete is placed in the mold, if compaction is done with vibrators, then to the very top. If you use improvised means (a metal rod or a shovel handle), compaction is carried out every 20 cm of the solution layer.
4. When the level of the spacers is reached, they are removed and the mixture is applied to the edges.
5. The top of the solution is carefully leveled with a trowel, because this will be the connecting end.

Ring made in handicraft form

Is it possible to make concrete rings with your own hands so that they meet all the requirements for strength and reliability, or is it better to buy these products in a store? Any problem can be solved if you find it the right approach. If there is a need to build a well, septic tank or cesspool on a site, there is no way to do without reinforced concrete rings. To do everything correctly, you need to carefully study this topic. In the article you will find detailed information regarding how concrete rings are made.

Make it yourself or buy ready-made ones?

Many people, believing that it is more profitable and reliable to buy a finished product in a store, do not even think about the benefits of making a reinforced concrete ring themselves:

• Firstly, it is more profitable financially. To make a ring with a diameter of 1.5 m you will need 0.3 cubic meters of concrete. The price of concrete depends on its brand, but even so the cost homemade product It turns out to be half the price of buying ready-made.
• Secondly, after analyzing labor costs, the purchase of ready-made rings also comes first. In this case, all efforts will be aimed at finding a trusted manufacturer that produces a quality product. It is also important to organize delivery of the purchase to the site, which means additional hassle and financial costs.

Important! In case of independent work, it is necessary to purchase high-quality materials and tools for making forms for pouring reinforced concrete products.

Equipment and materials

In order to make concrete rings with your own hands at home, you will need the following:

• Sand;
• High-quality cement for the production of concrete mixture M400-M500;
• Crushed stone;
• Concrete mixer;
• Large containers;
• Garden wheelbarrow;
• Form for pouring concrete mixture.

DIY mold for concrete rings

To manufacture the mold, the following technological conditions must be met:

• The formwork must have an even ring-shaped form and include two collapsible rings that are installed inside each other.

Important! The inner cylinder should be ten centimeters higher than the outer one.

• The optimal material for making formwork is wood or metal.

Important! For the manufacture of molds as a material the most the best option there will be an old metal barrel. You can quickly cut it out required sizes finished cylinders.

DIY mold for concrete rings. Manufacturing technology:

1. It is necessary to draw two longitudinal vertical lines from the outside of a large cylinder, which will divide it into two identical parts.
2. At least two door or window awnings must be installed on the marking line on each side. Their flaps should be located at the edges of the line, and the hinge joint should be located strictly on the line.

Important! The doors can be attached using welding or rivets.

1. On one side, it is necessary to cut off the lower caps of the spindles. This will make it possible to easily disassemble the canopies.
2. Project vertical lines onto the outside of the cylinder.
3. Using a grinder, cut the cylinder along the marked lines with a thin disk.

Important! To avoid damaging the awnings, this procedure must be done very carefully.

1. After this, the process of manufacturing the outer wall of the formwork is considered complete. Pull out the canopy spindles and open the cylinder.

Important! If necessary, the awnings should be lubricated so that the mold opens easily.

1. The inner ring is made in a similar way. Only vertical lines should be drawn in such a way that they do not divide the cylinder into equal parts, as is the case with the outer ring, but are spaced at a distance of ⅔ from each other from the length of the entire circumference. In addition, the lines should be located on the inside.
2. In exactly the same way, you need to install the canopies and cut off the spindle caps, only they should be on the inside of the structure.
3. Project lines onto the outside of the cylinder and cut carefully with a grinder.

Thus, both forms are ready.

Important! The inner ring should easily open inward, and the outer ring should open outward.

DIY concrete rings. Production stages

Once the mold for making concrete rings is ready, you can proceed directly to the production of products.

This process consists of several stages:

• Preparation of formwork and reinforcement;
• Preparation of the solution;
• Filling the form;
• Removing the finished ring.

Let's take a closer look at each stage so that your own concrete rings are of the highest quality.

Preparation of formwork and reinforcement:

• The finished rings must be installed on a flat surface. The inner cylinder must be located strictly in the middle of the outer one.

Important! If the operation is carried out in the summer, then it is better to place the forms in a shady place so that the mixture does not dry out ahead of time, as this will significantly reduce the strength of the concrete.

• Reinforcement can be done using a special metal mesh, which is installed between the cylinders in the middle. If such a mesh is not available, then wire can be used for these purposes, laying it in a spiral during the process of pouring concrete.

Important! Making rings without reinforcement is also allowed, but in this case the wall thickness must be at least 15 cm.

• To prevent the cylinders from moving during pouring, it is necessary to install several spacer wedges between them.

Preparation of the solution

The strength and durability of the finished product depends on the correct execution of this stage of work.

Enterprises use special vibration molds to produce concrete rings. However, at home there are no electric vibrators of any kind, so a plasticizer is used to improve the properties of concrete. This remedy is especially relevant if the ring comes into contact with water.

Important! How to use the plasticizer correctly, and in what doses, is detailed on the packaging.

Mixture preparation process:

1. Mix 1 part cement and 2-2.5 parts sand.
2. Add 0.5-0.7 parts of water and plasticizer to the dry mixture.
3. The next stage is adding 3-4 parts of gravel or crushed stone. It must first be moistened with water.
4. The resulting mixture must be thoroughly mixed in a concrete mixer.

Filling the form

You can begin this stage of work only if the air temperature is at least +8 degrees Celsius.

Procedure:

1. Carefully pour the concrete solution around the entire circumference to a height of 15-25 centimeters.
2. After this, compact the mixture using a thick metal rod.

Important! A wooden stick or a shovel handle is also suitable for these purposes.

1. Fill the solution another 20 cm and compact it in the same way.
2. When the solution level reaches visually above average, you will need to pull out the wooden spacers.
3. Next, the solution is poured to the very top of the mold and compacted. If necessary, you need to add concrete.
4. Carefully level the top. It is advisable that the end of the ring be without flaws, since it will be a connecting one.

Important! If the pouring took place in hot weather, then the mold must be covered with damp burlap and periodically moistened.

Removing the finished ring:

• With optimal air temperature and humidity parameters, after 3-4 days it will be possible to disassemble the formwork, opening the inner cylinder first, and then the outer one. However, the concrete cannot yet be moved or rolled, since it has not yet gained the necessary strength to withstand even the most minimal load.
• For another 7 days, the concrete also needs to be periodically moistened.
• After 10 days, the finished product can be moved.

Important! It is advisable to use a concrete ring with your own hands for its intended purpose only after the solution has fully gained strength, which usually happens no earlier than after 28 days.

An autonomous source of drinking water in a suburban area is a good alternative to the central water supply. Very often, a well or borehole is the only way to get water not only for food consumption, but also for watering the garden. Despite the fact that wells are gaining more and more popularity, traditional wells should not be discounted just yet.

The simplest version of such a source is made of concrete rings. Molds for the production of well rings can be purchased ready-made or made by yourself. The article will tell you in detail how to do this yourself.

General information

The classic shape for well rings resembles a cylinder, but there are also rectangular options. It should be noted that they can also be with or without a lock.

Traditional products have a flat end. If a lock is provided, then they are provided with connecting ends. According to experts, in this case the rings have better tightness and the entire system is more reliable.

Standard sizes of base rings are divided into groups:

• big– weight 1.5 t, internal diameter 2 m;
• average– weight 1 t, height – 900 mm, internal diameter – 1.5 m;
• small– weight 600 kg, height 900 mm, wall thickness – 160 mm, internal diameter – 1 m.

In addition to standard well rings, wall extensions are also produced, which differ in height and are used to create a well sector protruding above the surface of the site. They have less than standard options, height. An important element of the well design are those included in the kit and having a certain diameter.

Every year, the production of reinforced concrete rings becomes better due to the constant introduction of new developments. For example, laser cutting is now used when laying metal reinforcement. Innovations contribute to the production of high-quality and reliable products. Due to the simplification of production, the final cost of reinforced concrete rings is steadily decreasing.

We make rings for a well from reinforced concrete yourself

In this case, it is necessary to purchase or manufacture, or maybe rent, special forms of well rings. To create the outer and inner diameters, metal formwork is used.

Wire or a reinforcing mesh frame is installed in the free space between the formwork sheets, and then the entire structure is filled with concrete mortar. It is best to compact the mold with a vibrator; if you don’t have one at home, then this is carefully done with a wooden block.

You must remove air from the mixture so that the concrete can be compacted as best as possible. If you do everything correctly, the result is a very durable product that can withstand heavy loads and perform its function quite effectively.

When making products yourself, special running brackets are often installed. Manufacturing plants often install special rebated locks. This allows the structure to have a tight and reliable fixation of the barrel, which eliminates displacement of its elements.

Technology

Advice: take your time, the main thing is to carefully follow all the steps, then you will get the expected result.

Below are step-by-step instructions.

At first glance, it is complex, but during the manufacturing process you will realize that everything is simpler than it seems.

1. To create a mold, select 2 metal barrels that will match it, usually their price is junk. The fact that they will be technologically stamped will not affect the manufacturing process. If you don’t find barrels, you can take air ducts or pipes of the required diameter.
   Assemble the formwork cylinders and connect them together separate sheets. Good results are observed with formworks made from plastic cylinders.
2. Make two longitudinal markings on the outside of the outer barrel of the future shape, which will divide it vertically into two equal halves.
3. Take a pair of door awnings and install them on the markings so that their curves are on top and along the markings, and the leaves are located on the edges of the line. Attach the canopies by welding or riveting.
4. Copy the markings onto the inner ring of the formwork. At the place where the canopies are installed, cut off the lower bending fixing caps on each side only.

Tip: When working, be careful not to damage the outer ring.

1. Pull out the cut spindles and open the resulting shape. The closure of the valves will be secured by cut-off spindles or others, but suitable in diameter.

1. Prepare the inside. Use a prepared form or a metal barrel for this. Draw two marking lines inside, which are spaced apart from each other at 1/3 of the circumference. Make sure that the cylinder is not divided vertically into equal parts; the difference between the width of one part and the other should be almost 2 times greater. Install awnings on the internal formwork in the same way as outside.
2. Copy the markings from the inside to the outside. Then cut the cylinder carefully along the lines so as not to disturb the internal overhangs. Cut the spindles, pull them out and work out the resulting shape. Adjust the comparability of the parties.
   Make sure that when assembled, the internal formwork is 50-100 mm higher than the external formwork. The outer part of the structure should be easy to open, close and lock. Internal - easy to open inward.

After releasing the ring, first remove the inner mold. Then free the canopies from the spindles, assemble the smaller part of the mold inward and remove it from the fresh product, remove the outer part with the opening outward. This mold for the production of well rings can be used repeatedly.

Conclusion

Making a mold for a concrete well ring is easy. To do this, you need to select metal sheets of appropriate size and assemble them in a certain order. In the video presented in this article you will find Additional information on this topic.

Country farming cannot do without hydraulic structures: septic tanks, sewers and wells. The easiest way to build such objects is using reinforced concrete rings. We will tell you how to make concrete rings yourself, how to make a mold for them and how to properly mix the concrete solution.

There is nothing more familiar than the fruits of your own labor.

FormworkGeneral information

In the photo we see one of the formwork design options.

Reinforced concrete rings are one of the best solutions for construction concrete wells and septic tanks. Specifications concrete rings allow you not to worry about their integrity in conditions of freezing soil, which has become the determining criterion when choosing materials for our climatic conditions.

However, it is not always possible to purchase and deliver concrete products to the construction site, because the delivery price often exceeds the cost of the product itself. Considering how much it costs to bury a concrete ring, the project can cost an arm and a leg. In some regions there are no construction warehouses or stores at all, so you have to do everything yourself.

Reinforced concrete rings are the best solution for a septic tank.

To do this, it is necessary to solve three problems:

It is important to ensure easy dismantling of the formwork.

Important!
You can buy ready-made formwork, but then the whole point of our idea is lost, because we are not going to open an auxiliary production, and for one construction such an acquisition is unprofitable.

Mold making

Learning to make a mold for rings.

A concrete ring is a section of a cylinder with a wall thickness of 80 to 160 mm. Thus, the product itself has internal and external diameters, and the outer one is 8 - 16 cm larger than the inner one. This means that we need to select two steel cylinders with the specified difference in size.

Advice!
Concrete rings with a bottom can be made by first pouring a slab at the bottom of the pit into which the product will be installed.

A standard ring has a height of 90 cm with an internal diameter of 1 m, while the wall thickness is usually 160 mm. However, we can deviate from the dimensions accepted in GOST and proceed from the available means. The only thing that needs to be taken into account is the wall thickness of at least 10 cm and the height and weight of the product adequate for subsequent installation.

Standard product dimensions according to GOST.

Concrete rings with a lock are more difficult to make, so we will make products with a smooth edge.

Important!
For our purposes, metal barrels, sections of air ducts, pipes and other similar products are suitable.
These can also be small tanks or tanks, the main thing is a cylindrical shape, a difference in diameters within 10 - 15 cm and durable metal walls.

Now to the point.

Step-by-step instructions will help you make the mold yourself:

Important!
The height of the inner cylinder should exceed the height of the outer cylinder by 10 - 15 cm for ease of laying the concrete mixture.

Making a ring

How much it costs to dig a concrete ring depends on the installation method.

To make the ring, the formwork cylinders must be installed on a flat pallet. This can be a metal or wooden shield or tightly compacted earth.

Then, in the space between the cylinders, you need to install a reinforcing mesh, which you can purchase or make yourself from steel wire.

This is what a homemade wire grill looks like.

For ease of transportation and installation of the product, thick ears made of thick wire or fittings with a diameter of 5 - 6 mm should be inserted into the grille.

Between the cylinders, at approximately half their height, we insert wooden spacers, the thickness of which is equal to the thickness of the walls of the future product. This is necessary so that during installation the formwork parts do not move relative to each other.

After this, mix the concrete solution. To do this, take cement grade M400 or higher and mix it with sand sifted and washed from clay in a ratio of 1:2.5.

Then add water in an amount of 0.5 - 0.7 from cement, so that the mixture is not too greasy, but not too thin.

Add water carefully, in small portions.

Add 5 parts of crushed stone and mix the mixture thoroughly by hand or using a concrete mixer. Place the finished solution in the mold to a height of about 30 cm, after which we carefully compact it with a piece of reinforcement or a shovel holder. You can lean a hammer drill against the formwork in impact mode and gently vibrate the concrete.

Then we similarly lay layer by layer, when we reach half, the wooden wedges can be removed. Gradually fill the form and carefully level the top edge of the ring, trying to make it as even and smooth as possible.

Don't forget to insert the "ears".

We leave the product for three days in the shade under a canopy. After they expire, we remove the spindle of the internal formwork and open it inward. Then remove the outer part of the mold in the same way. Leave the ring in place for 10–15 days, moisturize it and protect it from direct sunlight and wind.

When making a concrete septic tank, it is important to decide how to seal the concrete rings. The easiest way is to use waterproofing and sealant, but there is a more reliable method.

The polyethylene insert solves the problem of septic tank tightness.

Important!
Plastic inserts into concrete rings eliminate the risk of leaks for 30 to 50 years.

If necessary, make reinforced concrete ring you can do it yourself at home. The video in this article will help you better understand the production technology of the product.