Reinforced concrete pipe 400 meter volume. Reinforced concrete pipes. Reinforced concrete pipes for construction of varying complexity

Reinforced concrete pipes, despite the presence of steel and polymer products on the modern market, have not ceased to be popular. They are usually used in the process of installing highways. They are able to withstand heavy loads.

Application area

Reinforced concrete pipes are common in civil engineering. Most often they are used when laying septic tanks, through which industrial and domestic effluents migrate. Due to the fact that such pipes have a significant diameter, they are widely used in the installation of main collectors. They are indispensable in the arrangement of storm sewer systems. Such pipes can have a different profile, which allows them to be used in the installation of various structures such as supports, foundations and much more.

Varieties of reinforced concrete pipes

Reinforced concrete pipes are classified according to some criteria. Thus, they can be pressureless. Such products are used to transport liquids by gravity. They are unacceptable to be used in conditions that involve significant. However, such pipes can take high mechanical loads, and also have excellent strength characteristics.

The second classification of reinforced concrete pipes is pressure products used in the installation of highways that operate at high loads in the form of internal pressure. This type of product is produced according to a special technology, which provides for the implementation of crimping, which improves quality characteristics. Pressure reinforced concrete pipes have a large wall thickness, which sometimes reaches 10% in relation to the inner diameter.

There are also special-purpose pipes, the diameter of which sometimes reaches 2 m with a length of 5 m. Such products are especially durable. As for pressure pipes, they can have one of four pressure modifications (5-20 atmospheres), they are used for liquids that do not differ in an aggressive environment. In production, products are especially common, the diameter of which is in the range of 40-160 cm.

Reinforced concrete pipes are also classified according to the maximum depth of laying. Three groups can be distinguished, each of which assumes a distance from the earth's surface within 2, 4 and 6 m.

Socket reinforced concrete pipes

Such a pipe looks like a traditional plastic or cast iron sewer. In order to make the pairing of such products airtight, seals should be used. Socket-type products are easy to install, which makes them so common. In this case, the diameter of the joints is larger compared to the main diameter. Such products can be both pressure and non-pressure.

Marking of reinforced concrete products

In order to understand what products are in front of you - reinforced concrete non-pressure socket pipes or others, you need to understand the markings. Thus, the first numbers that can be seen on non-pressure products equipped with a socket indicate the size of the internal section, the data are indicated in centimeters. While the second combination can be used to understand what the length of the pipe is, by the way, it is indicated in decimeters. The last digit is the bearing capacity, which indicates the permissible depth of installation during installation.

If a reinforced concrete culvert pipe can be used when laying a pressure-type system, then it will have the letter abbreviation TN. If there is a side, sole or docking station on the pipe, you can see the marking TB, TP, TS, respectively. But folded products may have the following markings: TF, TFP, TBFP, TO, TE and others.

Advantages of w / w products

Reinforced concrete non-pressure or pressure pipes have a lot of advantages, the first of which involves high strength and reliability of products. These qualities are due to a special production technology. This is what allows us to obtain such durable products. Vibrocompression is also used during manufacturing. Additional advantages of reinforced concrete pipes are their low cost, which is explained by not so high production costs; as well as the ability to withstand temperature changes. In addition, the pipes can be operated over a wide temperature range. They can be used in harsh environments. Concrete does not corrode and also does not rot, which makes consumers choose it much more often compared to steel. Among the advantages, experts highlight the dielectric qualities of the material, this helps to exclude such products. They will last more than half a century.

Cons of reinforced concrete pipes

Reinforced concrete non-pressure and pressure pipes also have some disadvantages. Sometimes for their installation there is a need to use special equipment, which makes the work more costly. In addition, for the smooth passage of liquids, in some cases there is a need to lubricate the inner surface of the pipes with a special composition, which implies additional labor costs.

GOST 6482-88

Manufacturing standards are regulated by GOST: reinforced concrete pipes according to it must meet the characteristics of water resistance, in addition, they must undergo internal within 0.05 MPa. Concrete must be resistant to frost. In addition, the pipes should be based on heavy concrete, prepared in accordance with GOST 26633, its compressive strength should be equal to B25.

The mentioned compressive strength can be changed, but deviations that go beyond the scope of GOST 13015.0 are not allowed. The water resistance of the pipe walls must comply with class W4. Water absorption should not exceed 6% by weight. As can be used steel A-I and A-III (GOST 5781).

Characteristics of reinforced concrete pipes

All quality characteristics of reinforced concrete pipes are regulated by the mentioned GOST, reinforced concrete free-flow pipes should not have cracks on the walls, otherwise they cannot be used in work. Shrinkage cracks, the width of which does not exceed 0.05 mm, act as an exception. Completeness is also determined by the standards. So, pipes that are marked TB, TSP, TBP, as well as TS must be sold and delivered to the buyer along with rubber-based sealing rings. Quality is also determined by the correctness of marking, which indicates that the manufacturer clearly followed the rules prescribed in GOST. The marking must be applied to the outer surface of the socket; the marking can also be on one end of the seam type pipe.

The diameters of reinforced concrete pipes were indicated above and are very diverse. For laying a particular system, you can select products with certain parameters. You should not think that if during installation you have to spend money on it, the system will be much more expensive than the one that is based on pipes made of another material. After all, concrete pipes are able to pay for themselves during the service life, without requiring repairs for a long time.

Reinforced concrete socket pipes are quite convenient when laying, which is why they are used most often, but before installing the system yourself, you should consult with a specialist.

Reinforced concrete non-pressure socket pipes

Reinforced concrete non-pressure socket pipes- reinforced concrete structures used in many types of construction: industrial, civil, etc. Due to the extensive scope and low cost (compared to similar products from other materials), reinforced concrete pipes are a highly demanded building material. Most often, reinforced concrete pipes are used in the construction of storm (rain) sewers or in the construction of culverts on roads. Non-pressure socket pipes (type T) are made of heavy concrete grade not lower than B25, water resistance grade W6, frost resistance grade F300, length from 2.5 m and 5.0 m, with an internal through hole from ø 400 mm to ø 1600 mm. Concrete concrete socket pipes manufactured in accordance with GOST 6482-88 are not allowed for use in the construction of federal highways (category I and II roads). SNiP 2.05.03-54*.

• Group 3 - withstand loads, subject to backfilling with soil up to 6 meters from the top of the pipe;
• Group 2 - are used, subject to backfilling with soil up to 4 meters to the top of the pipe;
• 1 group - up to 2 meters to the top of the pipe.

Products comply with the technical requirements of GOST 6482-88.

Type T

Reinforced concrete socket pipes- universal high-strength structures used in many types of construction. Designed for laying underground pipelines transporting by gravity household liquids, atmospheric wastewater, as well as groundwater and industrial fluids that are not aggressive to concrete. Most often, reinforced concrete pipes are used in the construction of storm (rain) sewers or in the construction of culverts on highways. The main advantages of reinforced concrete pipes are their ability to withstand severe loads and low cost compared to alternative materials. The disadvantages include - a large weight of products, the complexity of installation (attracting a large number of special equipment), transportation costs. The production of socket pipes is carried out in two main ways: vibrocompression, centrifugation. Non-pressure socket pipes are made of heavy concrete in accordance with GOST 6482-88. Pipes differ from each other in geometric dimensions and characteristics in terms of bearing capacity (in terms of load). Depending on the installed equipment, reinforced concrete enterprises produce pipes with a length of 2.5 m, 3.0 m, 5.0 m, 5.5 m, with a through hole diameter from 400 mm to 2,000 mm.

According to the bearing capacity, reinforced concrete non-pressure pipes are divided into three main strength classes:

• group 3 - up to 6 meters from the top of the pipe;

An increase in the bearing capacity is achieved by changing the reinforcement of the pipes (reinforcement), while the overall dimensions of the reinforced concrete pipes remain unchanged.

The marking of reinforced concrete pipes includes an alphabetic and numerical designation of the type of product, for example - TB 40.25-2

TB 40.25-2 - designation of reinforced concrete socket pipes, where:

• TB - type of butt joint (bell)
• 40 - nominal diameter in cm, in this case it is ø 400mm
• 25 - useful (working) pipe length in dm, in this case - 2.5 meters.
• 2 - compliance with the group in terms of bearing capacity, in this case - 2, i.e. these pipes can be used if the height of the embankment to the top of the pipe does not exceed 4 meters

TB type

The table shows the loading rates for reinforced concrete pipes, subject to the involvement of standard road freight transport with a carrying capacity of 18-20 tons, as well as the railway loading rates for one gondola car agreed with Russian Railways.

Pipe type TB- Supplied complete with rubber o-rings. The use of rubber rings helps to reduce the installation time, and also eliminates financial costs associated with the use of additional materials for caulking seams, increases the tightness of the pipeline. The rubber ring is mounted on the spigot end of the reinforced concrete pipe; when the next pipe link is joined, the ring (rubber seal) is pinched, which ensures the highest tightness of the pipeline.

These reinforced concrete pipes are the standard of reinforced concrete products:

• Strict adherence to all stages of production work
• The production uses high-quality raw materials (granite crushed stone)
• The ideal geometry of the socket connection, the inner side of the socket is ground, which greatly facilitates the installation of pipes.
• Strength characteristics exceed the requirements of GOST 6482-88
• High production capacity. The company specializes in the production of reinforced concrete pipes
• Pipes are supplied complete with rubber o-rings
• Products are certified

Reinforced concrete socket pipes can be divided into three main groups: non-pressure socket pipes, pressure socket pipes, pipes for road construction.

Non-pressure reinforced concrete pipes are designed for laying underground pipelines transporting household liquids and atmospheric wastewater by gravity, as well as underground water and industrial liquids that are not aggressive to reinforced concrete. They have the widest scope. These pipes are used for the construction of storm sewers in the construction of new microdistricts, for the construction of drainage facilities on the territory of industrial parks, logistics centers, and industrial enterprises. The main advantages of reinforced concrete pipes are: low cost, high strength characteristics, ease of installation, short delivery times, product range. The most popular are reinforced concrete socket pipes of the TB type - pipe TB 100.50-3 (length 5.0 m, diameter 1000 mm, wall thickness 75 mm), these reinforced concrete pipes have the most attractive loading rate - 5 pieces in one car, sometimes these pipes are transported by 6 pieces in one car, which significantly increases the competitiveness of the price of this product. For example, ordinary reinforced concrete pipes T100.50-2 or pipes T100.50-3 are usually transported 2 pieces in a car. reinforced concrete pipes of large diameters - pipes TB 120.50-3, pipe TB 140.50-3, culverts TB 160.50-3 transport (deliver) two pieces in one car.

The cost of reinforced concrete pipes has remained significantly lower than the cost of alternative materials for many years. The greatest difference in price per linear meter of pipes becomes noticeable when comparing the cost of large diameter pipes from 600 mm and above. Reinforced concrete is considered the main building material. Due to the presence of many manufacturers of reinforced concrete products, fierce competition in this market segment, the price of reinforced concrete products will never be overpriced.

Standard reinforced concrete pipes are able to withstand severe loads throughout their entire service life. The service life of the sockets is calculated for more than 50 years. Depending on the degree of reinforcement, reinforced concrete pipes are laid at a depth of up to six meters from the top of the pipe. Concrete concrete pipes marked according to the degree of load - 2, are allowed to be used at a depth of four meters, and marked -3, these are more reinforced pipes - up to six meters from the top of the pipe. Concrete and rigid reinforcement make reinforced concrete pipes a very durable and reliable building material. Reinforced concrete pipes do not deform during operation and retain the strength of the culvert structure for the longest possible period. Most of the design institutes stop at reinforced concrete pipes when choosing a material for the construction of culverts.

Ease of installation of reinforced concrete pipes. Reinforced concrete socket pipes are laid in an open way. Modern technologies for the production of reinforced concrete socket pipes allow us to produce high quality products. Reinforced concrete pipes are not deformed during transportation to a construction site, they have an ideal geometry of socket connections, and are easy to install. For ease of installation and increase the tightness of the pipeline, rubber o-rings are used. The use of rubber rings when installing concrete pipes significantly reduces the time of work and does not require the use of additional materials for caulking the seams. Currently, more and more manufacturers of precast concrete pipes offer products complete with rubber sealing rings.

Short delivery times! Reinforced concrete pipes are supplied both by road and by rail. Due to its characteristics, the development of the construction industry, the constantly growing demand for reinforced concrete pipes, the production of reinforced concrete pipes has been mastered in almost all regions of the Russian Federation. Currently, the supply of concrete pipes is possible in any region of Russia in the shortest possible time.

Product range! There are several basic methods for the production of socket pipes. Previously, pipes were produced by centrifugation, now reinforced concrete plants produce products by vibrocompression. This is a modern technology for the production of reinforced concrete pipes that allows you to produce a large number of products per shift, of the highest quality. To increase the level of competitiveness, precast concrete enterprises are constantly introducing new technologies. Concrete pipes are produced in accordance with GOST 6482-88. The minimum through hole of the culvert is 300mm and the maximum is 2000mm. Pipe lengths, depending on the equipment installed at the enterprise, vary from 2.5 meters to 6.0 meters.

* - Radial press - modern high-performance equipment designed for the production of concrete pipes with an internal through hole from ø 300 mm to ø 1200 mm, 2.5 m long.
Radial pressing (manufacturing method) allows you to produce a large number of high-quality products in the shortest possible time.

The production capacity of the manufacturer is able to meet the needs of any large-scale construction.

According to the bearing capacity, reinforced concrete non-pressure pipes are divided into three main strength classes:

• Group 1 - are used, subject to backfilling with soil up to 2 meters to the top of the pipe;
• group 2 - up to 4 meters from the top of the pipe;
• Group 3 - up to 6 meters from the top of the pipe.

An increase in the bearing capacity is achieved by changing the reinforcement of the pipes (reinforcement), while the overall dimensions of the reinforced concrete pipes (wall thickness, etc.) remain unchanged.

The marking of reinforced concrete pipes includes an alphabetic and numerical designation of the type of product, for example - TB 100.50-3

TB 100.50-3 - designation of reinforced concrete socket pipes, where:

• TB - type of butt joint (bell);
• 50 - useful (working) pipe length in dm, in this case - 5.0 m.
• 3 - compliance with the group by bearing capacity, in this case "3" i.e. these pipes are allowed for use if the height of the embankment to the top of the pipe does not exceed 6 meters.

TV type

TV-type pipes are supplied complete with rubber sealing rings, which helps to reduce the installation time, and also eliminates the financial costs associated with the use of additional materials for caulking butt joints. The rubber ring is put on the edge of the reinforced concrete pipe, then the pipe is inserted into the socket joint of the next (joining) pipe, while compression (pinching, squeezing) of the sealing ring occurs, which ensures high tightness of the pipeline.

According to the bearing capacity, reinforced concrete pipes of the TV type are divided into three main strength classes:

• Group 1 - are used, subject to backfilling with soil up to 5 meters to the top of the pipe;
• 2 group - up to 10 meters from the top of the pipe;
• group 3 - up to 15 meters from the top of the pipe;
• Group 4 - up to 20 meters from the top of the pipe.

An increase in the bearing capacity is achieved by changing the reinforcement of the pipes, while the overall dimensions of the reinforced concrete pipes (wall thickness, etc.) remain unchanged.

Marking of reinforced concrete road pipes includes an alphabetic and numerical designation of the type of product, for example - TV 100.50-3

TV 100.50-3 - designation of reinforced concrete road socket pipes, where:

• TV - symbol for the type (type) of the product, reinforced concrete road pipe;
• 100 - nominal diameter in cm, in this case - ø 1000mm;
• 50 - useful (working) pipe length in dm, in this case - 5.0 m;
• 3 - compliance with the group in terms of bearing capacity, in this case, "3rd group" i.e. these pipes are allowed for use if the height of the embankment to the top of the pipe does not exceed 15 meters.

* The cost of concrete pipes of the 3rd class of occurrence is calculated individually. Estimated price is +15% to the cost of pipes of the 2nd class

Concrete pipes in construction

A single common component of all construction and economic work is reinforced concrete products used for their intended purpose. So, concrete pipes are widely used in the restoration and construction of suburban roads, laying engineering communications.

Depending on the scope and features of the forthcoming operation, reinforced concrete pipes are divided into non-pressure, pressure and those intended for the construction of highway and railway embankments. The heavy concrete used in the manufacturing process and the technologies of high-frequency vibration conditioning, radial pressing, make it possible to obtain a high-quality and durable material that is fully suitable for main water pressure systems.

Since the concrete mix is ​​compacted quickly, homogeneously and evenly during the manufacturing process, which ensures watertightness and resistance to all external influences, such pipes are ideal for laying in harsh climatic conditions. According to the bearing capacity, concrete pipes can be divided into three types, based on the estimated height of backfilling with soil, which should reach a maximum of 6m.

Compared with polymer and metal products, it is advantageous to use reinforced concrete pipes not only because of their low cost, but also due to their high strength characteristics. High-quality concrete pipes and concrete wells do not require expensive repairs, are resistant to atmospheric influences and are relatively easy to install sewer and other underground pipeline systems.

GOST for concrete pipes, use of products

All reinforced concrete pipes are produced in accordance with GOST 6482-88. Reinforced concrete pipes are used in almost all types of construction: industrial, civil, rural and road and are intended for laying underground non-pressure pipelines. Also, concrete pipes are used for the construction of sewers and drains. Reinforced concrete pipes have high strength indicators, which increases the duration of their operation. In addition, concrete pipes are easy to install.

Concrete concrete products are complex engineering structures that have found a wide scope of application in residential, agricultural and industrial construction. Today they are created on the basis of high-performance technologies are in no way inferior to their plastic and cast-iron counterparts. Moreover, such products attract the opportunity to save money in residential, agricultural and industrial construction projects.

High-quality ones can last over 70 years. At the same time, such products are not subject to bacterial effects, are not afraid of heat, drought, moisture and frost. At the moment, they are widely used in the following areas:

• In private construction of structures;
• In the industrial production of protective elements, supports, etc.;
• In the arrangement of sites;
• In the creation of ditches, storm systems, collectors;
• In the manufacture of sewer outlets;
• To create stocks.

The choice of such suitable products depends on the purpose, size and complexity of the installation.

Pipes concrete sewer bell-shaped

Modern ones have a throughput diameter of 100 to 2400 millimeters. In this case, the value of this parameter directly depends on the dimensions, purpose and their type. Another important characteristic is their resistance to aggressive environments. To improve this property, modern manufacturers of building materials add various additives to the concrete mixture. Such components improve the resistance to acids and alkalis. Actually for this reason, they are used for the manufacture of not only municipal, but also industrial drains.

Given the wide scope of these products, it becomes clear that they must have high strength in order to withstand linear loads. They withstand internal pressure from 0.1 MPa to 2 MPa.

When choosing, it should be borne in mind that today manufacturers offer several options for joints. In particular, they can be installed in a socket or in folds. At the same time, today all of them can be conditionally divided according to the scope of application into pressure and non-pressure products. The first option is made either from pure concrete, or with impurities of polymers and steel inserts. Bushings made of plastic or steel are designed to provide greater resistance to aggressive environments.

Varieties and sizes are determined by GOST 22000-86.

The main types of concrete pipes

• TBPF;
• TBPS.

Types of concrete pipes

1. Socket sewer with butt joints (TB).

Such products are distinguished by the fact that one of their ends is somewhat expanded. They are classified as non-violent. They are designed to work with non-aggressive liquid, the temperature of which should not exceed 400 degrees. These products are sealed with rings, sealant or impact-resistant materials. As for the installation method, the installation is carried out end-to-end. In turn, TB according to the state standard are divided into:

• T-cylindrical;
• TB with rubber rings and a persistent side;
• TS cylindrical with stepped surface;
• TFP are cylindrical.

1. TBS socket sewer:

This variety belongs to the non-pressure type. Products included in this group, as a rule, have an internal wall diameter of 400 millimeters. Moreover, their lengths can reach 2500 millimeters. Most often, TBS is used for the construction of household sewer networks. These varieties are produced by vibrohydropressing. Actually, the use of this technology is due to high technical characteristics.

1. TBP seamed cylindrical pipes:

The diameter of this type of socket can vary from 400 to 2400 millimeters. At the same time, when choosing such products, it is important to take into account other parameters. In particular, if you are interested in a diameter of 1600 millimeters, then in terms of bearing capacity, TBP can have 2 grades, depending on the cross-sectional area. This parameter is determined by the height of the pipeline falling asleep. Pipes with a diameter of more than 1600 millimeters are used with a backfill height of not more than 4 meters. When working with TBP, it is very important to install the base over the entire height with soil, supplemented with a layered compactor.

1. TBPV seam pipes with sole:

Concrete rebate type, equipped with a sole, are non-pressure products that are used to conduct pipelines underground. Socket solutions include the use of special couplings that are designed to simplify the installation of materials. The advantages of TBPV include the possibility of installation on an uneven surface.

1. TBPS pipes, the joints of which are sealed with rubber inserts:

This type is produced in accordance with GOST 20054. We are talking about cylindrical socket products with a sole and a butt surface. At their ends there are special bushings that simplify the installation of products and ensure the durability of the structure. For better stability, manufacturers supplement TBPS with special rubber rings.

1. 6. Concrete pipe into the ditch for arrival:

The diameter of these can vary from 400 to 2400 millimeters. The surface of the sleeve end can be equipped with rubber rings. This provides products with greater density and wear resistance.

Concrete sewer pipes, in turn, are divided into:

• non-pressure concrete pipes
• concrete road pipes
• rectangular concrete pipes

Installation of concrete pipes - video

It should be noted right away that the installation of sewer pipes is a complex process that requires the use of special equipment, certain knowledge and skills. For this reason, it is better to turn to professionals who have experience in this work than to try to do the installation yourself.

When laying sewer networks, it should be taken into account that the coupling of concrete structures is mounted in its original position so that the end coincides with the mark. Moreover, if the products are equipped with rings with an elastic band, then they should be as close as possible to the coupling rings. The latter, in turn, must be in a conical coupling gap and go flush. To get them to the specified place, you should use a caulk.

After completing the above steps, an additional rubber ring must be added to the end of the second pipe. It is desirable that it be located near the end. After that, using a special tool, the coupling is advanced to the pipe to be joined strictly in the direction. In parallel with this action, it is necessary to roll the ring on the first pipe. For this reason, the installation of sewerage must be carried out by a group of specialists. It is physically impossible to cope with this task on your own.

After the coupling reaches the mark on the other sewer pipe, a second rubber ring must be placed in the slot. This will ensure proper water tightness, which is necessary for the correct positioning of the rings at the joints. If this quality cannot be achieved, the pipes will not last long.

Dimensions of concrete pipes

T-pipe dimensions

Dimensions of pipes type TB

Attention! Pipes with a diameter exceeding 900 millimeters must be equipped with a double welded frame. Such socket sewer pipes made of concrete are produced in accordance with GOST 6482-88. Regarding the installation of large pipes, it is important that the gap between the joints is 10-15 millimeters. In addition, the joints must be connected with a quality foam strand.

Construction of concrete pipes

How a reinforced concrete pipe is arranged - design

If a few years ago they were made from massive walls equipped with bends, then modern analogues are much more convenient and practical. The walls of modern sewer pipes can have either a separate or a common foundation. Everything depends directly on the geological conditions in which the operation of the product is envisaged.

For weak soils, they are produced with a common foundation, which can significantly reduce the pressure. In some cases, for greater efficiency, manufacturers make a reverse vault for a common foundation. In this case, this element performs two important tasks at once: it provides an outflow of water and acts as a leakage tray. Such products are made from rubble stone.

If they need to be installed on roads that belong to low technical categories, it is better to use products that have a round base of links. At the same time, it is good if they are additionally equipped with a flat sole. In such pipes, the links can have a hole with a diameter of 1 to 1.25 meters. The thickness of their walls in this case can vary from 14 to 16 centimeters.

In the device of the plantar part there is a welded mesh made of reinforcement with a diameter of up to 10 millimeters. The metal used for the manufacture of this structural element must be of class A-II. However, today there are two types of links:

The only drawback of these classes is not efficiency. For laying sewers from such materials, a lot of concrete is needed. As a rule, these pipes are installed under embankments. Their height can reach up to 7 meters.

It should be borne in mind that the links of round sewer pipes are very difficult to evenly place on the base of the foundation or foundation. In order to avoid mistakes during the installation process, manufacturers offer a standard project of links. In addition, you can use additional meshes that allow you to strengthen the heel of the reinforcement.

GOST

Prices and cost of concrete pipes

The cost of reinforced concrete products depends on the manufacturer and their purpose. As a rule, they cost a little more than their plastic counterparts, but they attract with better performance characteristics. For example, in a ditch, it can cost, depending on the manufacturer and diameter (300-2000 millimeters), from 3,000 to 50,000 rubles per unit.

Thus, we examined the features, varieties and features of the installation of sewer BTs. Summing up, it can be noted that they have a number of advantages compared to analogues, which is due not only to their durability, but also to a relatively affordable price.

Reinforced concrete pipes are produced on the basis of highly efficient technologies. They are successfully used in private construction and are a full-fledged replacement for cast-iron and plastic counterparts. The use of reinforced concrete pipes provides financial savings by reducing the actual cost of construction.

The operation of a quality product exceeds 70 years. The product is not affected by bacterial environments, heat, drought, frost, humidity.

In private construction, the application is appropriate in the following cases:

• construction of various buildings and structures (supports for fences, foundation elements, etc.);
• arrangement of the infrastructure of the site (for example, reinforced concrete pipes for a ditch);
• laying of general and storm sewer networks (sewer pipes for drainage);
• laying of collectors, communications, water disposal.

The problem of open ditches is very acute for the owners of suburban areas. The best solution may be the installation of reinforced concrete pipes

The disadvantages include significant weight, which complicates transportation and installation work. The product is used for transporting non-aggressive media. To reduce the resistance of the inner surface to flow, the pipe can be treated with special coatings, which increases its cost.

Classification of concrete pipes

When choosing reinforced concrete products for the needs of private construction, it is advisable to familiarize yourself with the main classification of products. According to performance products are divided into non-pressure and pressure.

Reinforced concrete non-pressure:

• non-pressure reinforced concrete pipes GOST 6482 88 are used to transport various liquids by gravity;
• the material cannot be operated in conditions where the working fluid is supplied under high pressure;
• non-pressure types are able to perceive high loads, are characterized by stable strength.

Pressure:

• used to transport liquids under pressure;
• the pipe is characterized by increased strength characteristics;
• unlike non-pressure, this type of product is produced with a significant wall thickness - up to 10% of the inner diameter;

Pressure types are used for arranging drainage systems passing through major highways and are produced in four basic modifications, with a diameter of 40 to 160 cm and are not used for private purposes and basic types of construction.

Design features

Based on the connection method, It is customary to distinguish two types of products: folded and bell-shaped. In bell-shaped seals, special seals are used. Products are easy to install and are most often used in private construction.

Main characteristics according to GOST:

• pipes are installed at an angle of 1-3 degrees to the horizon;
• the material is produced by centrifugation or vibrohydropressure, when the manufacturing form consists of two parts - internal and external. The outer one is mounted from two half-forms connected by bolts on both sides;
• the product can be with a round or rectangular section.

For small volumes of work, insulating coatings in the pipe are applied manually. When insulating butt joints, bituminous mastic is used.

Folded have selected quarters along the edges, thanks to which the elements are joined. The sealing composition is a cement-sand mixture. Both types of products can be produced pressure and non-pressure. The advantage of seam pipes is that they have the same diameter along the entire line. For socket joints, the diameter of the joints exceeds the cross section of the main part of the pipe.

Aggressiveness of liquids and durability

As noted above, they are used for laying domestic and storm sewers, the water of which is not aggressive towards the material. The aggressiveness of the transported liquid is standardized by SNiP and is divided into non-aggressive, slightly, medium and highly aggressive.

If the transport of aggressive liquids is required, the standard requires the concrete to be protected with anti-corrosion compounds, which is rarely done in practice. This affects the service life of products - through holes and build-ups are formed in the arch, the cost of restoration and replacement will be high.

Strength

The reliability of products laid in the ground during operation is determined by their deformation and strength characteristics. Therefore, when choosing a product, you should calculate what loads it will take.

If you pay attention to the deformability, then the reinforced concrete pipe (1000, 500, etc.) is a rigid structure that practically does not deform under external operational loads.

To ensure reliable operation of the finished pipeline, the following should be considered:

• the master must pay attention to the thoroughness of laying in the trench;
• high-quality study of the butt joint is required;
• docking of domestic products is recommended to be carried out by caulking with hemp or sealant with cement-sand mortar, which will ensure impermeability for the entire service life;
• no less reliable, but simple, is the sealing of joints with rubber rings;
• the master must take into account the possible subsidence of soils. A set of measures should be taken to prevent soil movements.

Problems of overgrowth of sewer pipes

When buying pipes, you should pay attention to the correct marking. It should be on the outer surface of the socket

Concrete products, the price of which is higher than plastic counterparts, due to their characteristics, well resist overgrowth and sedimentary deposits. This does not depend on the diameter of the product, except in situations where concrete corrosion occurs.

Tunneling

In construction, trenchless technologies for laying pipelines can be used:

• vibro-impact method - it is advisable when driving work up to a length of 80 m, with a diameter of up to 4000 mm. For driving, special machines powered by compressed air are used;
• plow method - used when laying pipes with a sleeveless connection with a diameter of up to 300 mm at a plowing depth of up to 1.8 m;
• microtunneling - used when laying products with a diameter of 250 mm or more. The technology is suitable when working with any type of soil.

In private construction, they most often resort to the standard method of laying pipelines - digging pits.

Marking

According to the labeling standard, the product must be marked with its type, passage diameter, useful length, type of load-bearing capacity. In addition, the characteristics of the permeability of concrete pipes are indicated - O - especially low, H - normal, P - reduced, and resistance to Shch - alkaline environments, K - acidic environments.

Product marking:

• T - reinforced concrete socket cylindrical pipes with a butt joint. Sealing is carried out with sealant and other materials;
• TP - the same type, but with a sole;
• TB - bell-shaped cylindrical, the sleeve end of which is equipped with an additional thrust ledge and a butt joint. Consolidation is realized by a rubber ring;
• TBP - the same type, but with a sole;
• TS - socket cylindrical, the sleeve end of which is equipped with a stepped butt surface and a butt joint. Consolidation is realized by a rubber ring;
• TSP - the same type, but with a sole;
• TI - socket free-flow centrifuged;
• TF - folded non-pressure centrifuged;
• TFP - folded cylindrical with a sole and a butt joint. Sealing is carried out using sealants and other materials.

With an increase in the bearing capacity of the product, reinforcement increases

The bearing capacity is divided into 5 strength classes:

• I - backfilling with soil up to the top of the pipe up to 2 m;
• II - up to 4 m;
• III - up to 6 m;
• IV - up to 8 m;
• V - up to 10 m.

On the surface of the product indicate the stamp of the Quality Control Department, the date of issue, weight.

Reading the marking on the example of a reinforced concrete pipe T 100.50-2:

• T - bell-shaped non-pressure pipe;
• 100 - nominal diameter;
• 50 - useful length - 5110 mm;
• 2 - the second class of bearing capacity.

Price

The average level of financial costs that can be incurred when purchasing products is as follows:

• reinforced concrete pipe 400 - the price will be 6.8 tr;
• reinforced concrete pipe 500, concrete pipe 500 - price 3 tr;
• concrete pipe with a diameter of 800 mm - price 5 tr;
• for reinforced concrete pipes for a ditch, the price starts from 1200 r;
• for concrete pipes of large diameter, the price starts from 12 tr. The maximum cost for large diameter pipes will be 40 tr.

Despite the significant weight and the need to use equipment during installation, reinforced concrete pipes remain one of the most reliable materials for laying pipelines.

How reinforced concrete pipes of large diameter are made is shown in the video: