Rings cesspool: how to make the most of the ring of concrete and plastic

To do something with his hands - some fun, especially if you end up with something to be proud of. Besides moral satisfaction with the results of their efforts can be also good to save money, make a ring for cesspool in their area.

Materials for this is not difficult to find, but the result depends only on the strict observance of technology. Therefore, in this article we will focus on how to make their own rings for raking, and that this will require.

manufacture of rings of concrete technology

To a home septic tank had served for many years to do his best not to brick and of concrete rings. Buy them is not difficult, but also to make their own do not have to be a great professional.

The cost is cheaper, and the cesspool do not have to fit a standard size when the designer himself can choose any convenient.

Getting to the implementation of the conceived need, first of all, decide on the place - choose a fairly large and flat area. Concrete mix will have to prepare a lot, so you need a cement mixer.

Since the product is badly, as they move not do without lifting devices. Forming rings need a special form.

For the production of rings

Form rings has a simple geometry: a pair of cylinders - internal and external. Difference between the diameters should be equal to the wall thickness, which is about 1.5-2 cm.

You can get them in different ways. The most simple - buy the factory product with an internal cone-shaped core and an outer ring, strengthening ribs and installed on it a vibrator.

After installation of this form on a flat pad in her laying reinforcement and pour its solution. Shrinkage mixture on each fill step provides a vibrator. This prevents the formation of air voids in the concrete walls of the body. Reinforcement - operation is not mandatory, but desirable, as the product is getting harder.

Even simpler - take two drums with suitable parameters or pipe. It can be manufactured from sheet metal cylinders. Sheets of interconnected canopies - door or window. The most accessible way - the production of forms with planed boards.

Production of form boards

To produce such a shape required board thickness of 2 to 5 cm. The outer and inner cylinders made collapsible, consisting of several wooden rings. On wheels for stuffed inside the outer cylinder is well treated boards.

The inner cylinder should also be assembled and disassembled easily. Make it the same rules as the outer portion of the mold, but not sheathe the inner and the outer diameter. After the mold assembly between the cylinder should remain a gap of 1.5-2 cm.

For articles relevant parameters need to compute the dimensions of the mold. Assume for the sump need diameter ring 840 with a wall thickness of 140 mm and 890 mm. To calculate the internal diameter using the formula: Dv.n. = D + 2h, where D = 840 mm, h = 20 mm (thickness of lining board).

These values ​​are substituted into the formula: Dv.n. = 840 + 2 x 20 = 880 mm. If we assume the width of 100 mm diameter of the rings of the ring outdoor areas Dn.n. = Dn.v. + 2S = 2 x 880 + 100 = 1080 mm.

Given that the need to make a ring with a wall thickness of 140 mm, an outer diameter of the wood core is: Dn.v. = D - 2B - 2h. Where D - diameter of the product, B - the thickness of the finished rings, h - the thickness of the board. Dn.v. = 840 - 2 x 140 - 2 x 20 = 520 mm.

If manufactured formwork inner wall of the ring width is also equal to 100 mm, the core must have an inner diameter Dv.v. = Dn.v. - 2S = 520 - 2 x 100 = 320 mm.

Express User pouring rings

The process of making concrete rings with filling solution in the formwork made of boards, the steps to submit the following photo-selection:

These steps are in fact preparing to work on the casting. Now you're ready to direct the production of concrete rings:

Manufacture from reinforcement belt

You need to prepare round ribbed rolled thickness of 0.8-1 cm, from which the knit reinforcement ring.

Ring, the number of which depends on the height of the articles to be interconnected vertically, using reinforcement sections. It is desirable to maintain a distance between the reinforcing zones approximately 25 cm. Between the sections reinforcement, mounted vertically, it is recommended to comply with a step of 35 cm.

For the convenience of transporting the finished product up armirovochnogo frame tied the workpiece in the form of loops of wire. Can be used and the stainless steel grid with a minimum thickness for the reinforcing cage 0, 4 cm. A ring formed therefrom and fixed by means of the wire edge.

Pouring concrete mix

To begin the manufacture of the rings can be at a temperature of not lower than 8 and not greater than 22 ° C. formwork elements are inserted into each other after coating them with machine oil - is subsequently facilitate their dismantling. The gap between the cylinders of the carcass reinforcement is inserted.

In order to give stability armature, it is fixed by means of wedges. Subsequently, the wedges are removed as the concrete form filling mixture.

A solution of observing the following proportions:

1. Fresh cement not lower M400 - 1 piece.
2. Crushed granite or limestone with malookatannymi grain size of not more than 0, 2 cm - from 4 to 5 parts.
3. Quartz sand grains with a size of at most 0.22 cm - from 2 to 3 parts.
4. Water - a maximum of 0.7% by weight of cement.

Experts have their own secrets of preparation of the concrete mixture. Sometimes they add to it potassium glass in order to increase the plasticity of the mass and vodopronepronitsaemost. To castle, the composition has increased, it is administered in a component such as PVA adhesive. Fluidity of the mixture is increased by adding detergent.

It is important to immediately consume ready-mixed concrete, because it is better to calculate the right amount for a potting mix.

Stiffness to the eye can be determined by placing the mixture on a horizontal plane. If the slope it will drain quickly, the mixture is very liquid. On average ductility of the mixture indicates its slow drift.

When the mixture is stuck and does not slip, so it is a little plastic, and if the mass does not even change its shape and lay a lump, it shows its rigidity.

To navigate in this matter, as the selection of the number of components required for the preparation of 1 mᶾ concrete, you can use this table.

Since rings cesspool - reinforced construction, there is more suitable for a small concrete hardness. When using Portland cement M500, M400 standards for multiplied by 0.88. For other brands are taking and other factors.

Preparing a mixture of a consistency resembling a stiff dough, is sent to the first formwork layer thickness of about 10 cm. The skip is then performed: taking a steel rod 20 mm in diameter and carefully compacted material.

In this manner, fill the entire volume between the two cylinders. When you are finished, close the product out of direct sunlight, throwing on top of a piece of thick fabric.

Remove the formwork for the incident 14 days left in the same place more days at 4, not forgetting periodically watered. If the filling is performed less dense mixture, then the process is called casting. Formwork from articles obtained by the second method, is removed in a week.

On the surface will sink and fill with cement mortar. The products manufactured by the second method, is formed smaller shells. Oil, which covered the surface of the cylinder is removed. Tighter connection ring provides a lock.

To obtain this element is added to form another ring 2, a Shared mounting chamfer forming a projection on one article and the neck on the other. This will allow firmly fix the ring during installation, preventing them from shifting.

A method for manufacturing rings, eliminating from the process laborious operation such as transportation of the finished product. For this form of rings are made on the spot, where he subsequently suggested digging a cesspool. First molded ring, and then the ground underneath is selected and gradually lowered to the bottom of it, by immersing in a hole completely.

When the upper edge of the product will be on the same level with the ground on it constructing a new formwork. Do the following ring and again choose the ground as long as the product edge is flush with the ground. Continue to make new rings until the desired depth of the sump.

The most high-quality products are obtained, if it is possible to use a block-making technology, involves the installation of a special form on the vibration plate with a drive.

Stove executes oscillatory movements of small amplitude and high frequency that maximizes the compacted concrete mass.

The use of plastic rings

Advantages of plastic rings for cesspool in their low weight, durability and ease of installation. For their production the raw material is low density polyethylene, which is characterized by excellent strength characteristics.

The most common size - height 150 cm, diameter of about 95 cm, a wall thickness of 25 cm.

Ring without harm to its integrity perceives high mechanical loads due to the ribbed body. For a single sump, as a rule, does not require more than 3-4 ring performing the function of the walls.

For the bottom and top of the sump use other parts: the bottom hatch ring to frame openings serving for connection to a sewage system.

If we compare the plastic rings with concrete, then, in addition to low weight, one can see a number of other advantages first:

1. Quick installation using existing locking systems.
2. Ease of disassembly.
3. Fully sealed.
4. Ability to perform a replace a failed ring.
5. Lack of response to exposure to moisture. Plastic never razmoknet and will not corrode.
6. On the plastic does not affect any aggressive chemicals or waste products found in the waste and soil bacteria.
7. Smoother inner surface, not conducive to accumulation of plaque on it.
   Reasonable price.

Lightweight construction can sometimes cause it to move under the influence of groundwater. To this did not happen by pouring the bottom of the pit, a special metal hooks inserted into the concrete floor. Through these devices reliably fix light plastic ring.

And how to spend waterproofing septic tank plastic insert can be found in this material.

Sometimes, the first ring is lowered into the sump at an even screed uncured. This is much easier than to fix it with hooks and ropes. There is in this negative side - will have to make great efforts in the case, if necessary dismantling construction.

Deciding to make a cesspool of plastic rings, it is necessary to define the place for her.

Health rules concerning the location of any septic tank, the same:

• at least 5 meters from the front door of the house and windows;
• not less than 3 m from the road and the landmark with the adjacent portion;
• 15 m or more from a well or wells with potable water;
• having access to work assenizatorskaya machines;
• the absence of a pit next to the fruit trees.

The next step - defining the scope. Shall be based on the daily consumption of water for 1 person living in the house. The common rate - 200 l. Digging a trench, satisfied at the bottom of the concrete screed 200 mm high, strictly controlling horizontality.

Between the walls of the excavated pit and corrugated rings surface should be a gap of at least 30 mm. From the bottom and left 20 cm margin. If the bottom sump not plan concrete, this parameter is increased to 0.5 m.

When the latter option is selected, the device must filter layer composed of gravel and sand, separated by their inability to mix, geotextile. In the manufacture of plastic rings in their design has been laid in the form of insulation prodolnopoloy layer, but if in your area there are severe frosts in winter, and it is useful to further insulation.

For device insulation layer is necessary to take the cloth reflective material dimensioned such that the entire surface of the pit was covered after the lowering of the Rings. A material with reflective layer will not allow to leave the heat in the soil. Its edges are fixed on the perimeter of the top of the pit string.

The rings are immersed alternately using ropes. To each of them apply a little effort to connect with the previous. To do this, the design of grooves are provided.

The cable with which the immersed ring, tied at one end to a metal hook walled up the formwork, and the other throws on the opposite side of the hole and is fixed there. Received additional strengthening rings.

Now you can begin to backfill the tank. Typically, the outer side of the rings poured ground. But if the water table is high, the gap between the container and the excavation is placed a mixture of cement and sand in the ratio 1: 1.

Simultaneously with this operation in the capacity necessary to pour the water, making sure to pour a level below ground water level was 200 mm. If you do not, on the plastic under pressure created by the soil can cause cracks.

It remains to cover the hole sealed hatch, Which prevents the sump from getting into the rainwater. Furthermore hatch diameter 0.7 m, it is necessary to install the vent pipe with a cross section of 100 mm, which will be withdrawn from the well gases.

You can buy a special tool for purification of sewage, comprising live bacteriaFeeding organic and processing it to a liquid state. When the sump is not the bottom, most of its contents will go into the ground. In a closed sump collects more waste, so it has to be pumped out frequently.

Conclusions and useful videos on the topic

Here you will see how to make concrete rings in a suburban area:

This video will be discussed about the manufacture of split molds in which the concrete rings formed:

Following the recommendations given in the article, you can make a ring for sump independently. If this process will seem very tedious, you can always buy ready concrete rings or plastic. As for their installation, and our article in this issue will be useful to you.

Any questions about the topic of the article? Or can ever build by the concrete ring septic tank, and you can give some advice to our readers? Leave your comments, photos loaded homemade, share their secrets in the manufacture of a section block.