In this article we will talk about which pipes are best to choose for underground sewer and let's look at their pros and cons.

So, which pipe is better to choose for underground sewerage?

This question always arises when seeing diversity on the market.

To avoid making a mistake in your choice, you must consider the following factors:

1. chemical composition of the discharged waste and its temperature;
2. maximum discharge volume;
3. maximum possible temperature drop in winter period;
4. type of soil;
5. how deep and at what angle the sewer will be laid.

Pipes in external sewerage must be very strong and durable, able to withstand negative temperatures well.

This is what guarantees their reliability and longevity of the entire sewerage system.

Materials for sewer pipes

There are several types of materials used in the manufacture of pipes:

• cast iron,
• polyethylene,
• polypropylene,
• ceramics,
• asbestos cement.

And two latest material used extremely rarely. Pipes made of plastic or cast iron are most often used.

Cast iron pipes

Malleable cast iron has many advantages over gray cast iron. Nowadays, socketless pipes made of cast iron (sml) are most often used.

The advantages of such pipes:

Very durable

Will last up to 85 years,

They can easily tolerate negative temperatures.

But there are also disadvantages:

Absolutely not suitable for salty soils,

Very heavy, making installation and delivery difficult

Uneven, rough walls contribute to the gradual clogging of the pipe,

Expensive.

PVC pipes

PVC pipes used for external sewerage, orange color.

Pipes gray have thin walls (2.7 mm) and therefore deform under soil pressure. They are used only for internal sewerage.

If the laying depth of the pipe is more than two meters and boxes are not used, then in this case it is better to use corrugated pipes.

Pros:

Cheapness,

Easily tolerate temperature changes,

Durability,

Smoothness of the inner walls, which prevents blockages from forming,

Light weight of the pipe, which makes installation easier,

They don't rust.

Minuses:

At a temperature drain water more than 40°C the pipes are deformed,

Used only for non-pressure sewerage,

Suitable for small houses.

There are some differences between pipes different manufacturers. And this also needs to be taken into account.

In addition, there are three classes of pipe stiffness:

1) S - rigid (used at depths up to 8 m),

2) N - medium hardness (depth up to 6 m),

3) L - light (up to 2 m).

Polypropylene pipes

Pros:

Smooth inner walls

Service life is about 100 years,

Easily tolerate temperatures of 100° C,

Not affected by chemicals

Not heavy weight pipes,

Easy to install.

Minuses:

Soft, easily deformed when pressure increases,

Pipes with thick walls are very expensive,

They become unusable when exposed to sunlight.

Polyethylene pipes

There are smooth and corrugated. The latter, by the way, are more durable.

Pros:

Possibility of laying pipes to a depth of up to 15 m, since they do not deform under the weight of the soil,

Smooth inner walls

Small mass

Easy installation due to the presence of connectors and tees,

Service life more than 50 years.

Minuses:

Deforms at temperatures above 65° C,

They become unusable when exposed to sunlight,

Installs only in the ground.

Despite all their advantages, polyethylene pipes have little strength, so their rigidity is increased due to the outer corrugated layer.

Asbestos cement pipes

Such pipes are made from a water mixture of cement and asbestos.

Pros:

Resistant to any chemicals,

Service life up to 100 years,

Easy to install and simply connect to each other,

Small mass

They rarely get clogged.

Minuses:

Very fragile (this must be taken into account when purchasing and carefully inspect the pipes for chips and cracks),

Difficult transportation, again, due to fragility.

These two disadvantages overshadow all the advantages of such pipes, so they are now practically not used.

Ceramic pipes

Ceramic pipes were used even before our era, but even now they are also used in sewer construction.

Pros:

Easily tolerate temperature changes,

Resistant to any chemicals, even the most caustic ones,

Easy to install,

They practically do not clog due to the slight roughness of the internal walls.

Minuses:

Very fragile and this makes their installation and delivery difficult,

Small length, which leads to a large number of joints between them.

Because of its fragility ceramic pipes have practically disappeared from the market because they are difficult to use.

Pipe diameter selection

When choosing the diameter of a sewer pipe, you need to pay attention to both the internal and external diameters.

For sewerage of a small private house, a pipe with a standard diameter of 110 mm is suitable. When combining several sewers into one network, the diameter of the pipe must increase. Pipes for polyurethane foam are used largest size diameter

In most cases, pipes with round. But there are cases when pipes with a rectangular or elliptical cross-section are used.

Rectangular pipes can be installed if the sewage system is located at a depth of up to 1 meter, and ellipsoidal ones in the case where soil or drainage creates very strong pressure on the pipes.

It should also be remembered that if the sewer system is located shallow, then it must be insulated, otherwise you may experience pipe rupture at sub-zero temperatures.

Methods for connecting sewer pipes

There are three connection methods:

1) welding- the most difficult method, as it requires certain skills and special equipment. Used to connect plastic and metal pipes. In case of repair, such connections create some difficulties;

2) bell-shaped- a thin section of pipe is inserted into the wide end of the second pipe (socket), used for tightness rubber seals and sealants, and at the end they add tow;

3) coupling (flange, socketless)- the two pipes are pressed tightly against each other with their cuts, a rubber cuff is placed on top and tightened with a clamp. This is the most convenient method for sewer repair.

From all this we can conclude: before choosing a particular type of pipe, it is necessary to analyze all the factors for specific situation to avoid problems in the future. For example, calculate the slope of a sewer pipe depending on the site.

Video: All about sewer installation

The basis of the sewer system is a high-quality pipe. The higher the load on it, the stronger it should be. Nice pipe for drainage in the ground it lasts for more than 25 years without the risk of clogging, breakdown, or depressurization of the collector. At the same time, temperature indicators do not have a significant effect on it.

How to choose a pipe for underground sewerage

When choosing elements for external sewerage, it is important to consider two important parameters:

• The volume of wastewater that will flow through the collector. The larger it is, the larger the cross-section of the external system will be.
• Level of static and dynamic load on the ground. They mean the intensity of traffic in the area and the pressure of the soil on the collector.

It is good to use a pipe with the smoothest inner surface for underground sewerage. This will avoid silting of the system and its blockages.

Material of manufacture and technical characteristics

For the production of external sewerage pipes, four types of materials are used - polymer, cast iron, ceramics and asbestos cement. Each of them has specific specifications and is good when used in certain conditions.

Ceramics

Ceramic sewer pipes

Ceramic “sleeves” have the following positive characteristics:

• high resistance to medium and higher loads;
• high throughput with increasing diameter (up to 600 mm);
• Possibility of installation using the joint/groove system without the use of additional couplings;
• inertness to aggressive waste media.

Ceramic pipes have two significant disadvantages - they are heavy and inconvenient to use. self-installation reservoir, and the relative fragility of the material. If installed carelessly, the wall may crack. More often, such elements are used to install public sewer systems.

Polymer (PPP and HDPE)

Socketed polypropylene pipes

As polymer materials use polypropylene (PPP) and polyethylene low pressure(PND). In the first case, the positive characteristics of the pipes are as follows:

• high ductility, which reduces the risk of damage to the system during installation;
• good linear stretchability;
• resistance to temperature changes;
• long service life;
• light weight of elements and ease of installation.

However, polypropylene “sleeves” are unsuitable for installing a city sewer, since, according to the maximum cross-section of the sleeve, the system can withstand only average volumes of wastewater.

PVC pipes

HDPE pipes have the following characteristics:

• resistance to temperature changes in the range from -50 to +130 degrees;
• rigidity of the elements due to the corrugated outer structure (the rings act as stiffeners);
• resistance to mechanical loads;
• tensile strength;
• smoothness of the inner walls;
• little weight;
• long service life.

Just like PPP pipes, HDPE elements are not suitable for sewer installations with a large volume of wastewater. In addition, direct exposure to ultraviolet radiation on the polymer destroys it over time. But this does not apply to external sewerage.

Asbestos cement

Asbestos cement pipes

Such a sewer pipe can be laid in the ground for any volume of wastewater. It is important to choose the correct cross-section of the collector. Asbestos-cement elements have the following advantages:

• resistance to aggressive environments and to dynamic/static loads;
• inertness to aggressive components in wastewater;
• smoothness of the inner walls;
• less weight than cast iron or ceramic “sleeves”.

When laying sewers, the weight of an asbestos-cement pipe is often its disadvantage, since such work may not be possible to cope with alone. In addition, the fragility of the material when subjected to a strong mechanical impact on it leads to splitting.

Cast iron

Cast iron sleeves

The main positive aspects of a cast iron pipe are:

• resistance to various types loads;
• inertness to low/high temperatures;
• corrosion resistance;
• service life (up to 80 years).

But cast iron also has disadvantages:

• tendency to siltation due to the imperfectly smooth surface of the internal walls;
• weight that makes installation difficult;
• cost of elements.

Diameter of sewer pipes

All pipes for external sewerage made from various materials, have a specific gradation of sizes/sections:

• Polymers. The diameter of the sewerage elements ranges from 40 to 200 mm. As a rule, elements with a cross section of 40, 50 and 110 mm are used inside the house. The external collector is mounted from pipes of larger cross-section.
• Cast iron. The internal section (DN) starts from 150 mm and reaches a maximum value of 600 mm in increments of 50 mm.
• Asbestos cement. Such elements have a diameter from 75 mm to 600 mm.

All pipes with a diameter of 110 mm or more are intended only for the installation of external sewer networks.

Basic requirements for pipes for sewerage in the ground

In order for the sewer system to operate without failures, it is important that the pipes for the external collector meet the following requirements:

• Durability and long service life. For private sewer it is from 30 years.
• Inert to aggressive/chemical environments.
• Resistance to temperature changes.
• Maximum smoothness of the inner walls.

Given that correct installation systems with a slope towards the wastewater receiver will work properly without the need for expensive repairs. In this case, it is advisable to flush the collector under high pressure at least once every 5 years.

The construction of communications brings real comfort to country life, but their open location does not in the best possible way is reflected in the aesthetic component of the site. It is a completely different matter if the sewer pipeline is buried in the ground: it is not visible, the pipeline does not interfere with movement.

However for underground device system requires compliance with rules and regulations. They should be studied, don’t you agree?

The fundamental laws and subtle nuances according to which sewer pipes are laid in the ground are presented on our website. Based on the information we offer, you will build a trouble-free external sewer system.

A pipeline constructed in accordance with our advice will work perfectly at any time of the year. The article presented to your attention scrupulously describes the technology for constructing the underground part of the sewer system.

The material describes the nuances of design and installation details. Recommendations are given on the implementation of preventive measures and compliance with sewerage operating rules. To make it easier to understand, the information is supplemented with photo images and video instructions.

Today, almost every household has the necessary set of amenities for a comfortable stay: washbasin, sink, toilet, shower or full bath, washing machine and other benefits of civilization. Many houses are equipped with not one, but several bathrooms and bathrooms.

All this equipment, when fully operational, produces per day a large number of waste and wastewater. According to standards, the amount of liquid waste per person per day is from 5.4 to 9.5 liters, which must be discharged somewhere.

Usually, country houses where people live permanently have many different plumbing fixtures, which makes it necessary to equip an autonomous sewer system

Therefore, the drainage system is a mandatory part engineering communications individual house. It consists of , release from residential building and an external sewer network laid on the site.

Many owners of private houses, paying Special attention internal system, for some reason they do not always treat the arrangement of external networks properly.

Indeed, the process of laying a pipeline seems simple; it is enough to dig a trench, connect the pipes to each other, the intra-house system and the collector, and then cover everything with earth.

But this is only at first glance. In fact, in this, as in any other work, there are many nuances that must be taken into account. Failure to comply with technological standards and improper installation of the pipeline may in the future lead to siltation and other significant problems.

If the site has a natural slope that exceeds the recommended standards, it is possible to lay a sewer system with several vertical transitions. In this case, on horizontal sections of the pipeline it is necessary to comply with regulatory indicators.

Actions to take when the sewer freezes

If you have not insulated your sewer pipes, or have not insulated them sufficiently, and they are frozen, first of all, you need to identify the damaged section of the pipeline in order to choose a method to solve the problem. Metal pipes can be heated using a blowtorch.

If the pipeline is made of plastic, open fire cannot be used. You can pour hot water into the sewer, in which you have previously dissolved salt (2 kg per 10 liters of water). You can direct a jet of steam or hot water to the audit office closest to the frozen area.

If the damaged pipe is located in the middle of the main line, you can use a steam generator to warm the soil. However, this process can take quite a long time. It is best to prevent the system from freezing, and when laying pipes, provide them with high-quality thermal insulation.

Conclusions and useful video on the topic

This video covers the process of laying external sewerage in great detail, and also provides regulatory indicators that must be adhered to during installation:

This video shows how to lay sewer pipes in the ground:

Despite its apparent simplicity, the work of laying sewer pipes requires a competent approach and knowledge of regulatory laying rules. Only if the necessary indicators are met and correct execution work, you can build a truly effective and durable sewer system.

Are you trying to install sewer pipes yourself? Or maybe you don’t agree with the material presented? We welcome your comments and questions – the contact form is located below.

The sewage system of a private house consists of internal and external pipelines. Installation of the internal part of the drainage system is complex and requires professionalism and the use of special equipment. In areas where there are outbuildings, plantings or road surfaces, special equipment is used and sewer pipes are laid using the horizontal puncture method.

When choosing pipes, you need to consider:

• ability to cope well main task– drainage, do not allow small debris to cling to the internal walls and accumulate, forming blockages;
• resistance to aggressive substances contained in wastewater and soil;
• strength that does not allow the pipes to deform under the weight of the soil laid on top of the pipeline.

Sewage pipes have their advantages and disadvantages, which vary depending on the material from which they are made:

Pipe material	Advantages	Flaws
cast iron	durability,	heavy weight, difficulty in transportation and installation, roughness of the internal surface, high cost
steel	resistance to mechanical stress, smooth internal walls	instability to moisture, susceptibility to corrosion
asbestos cement	durability, lightness, low cost	instability to mechanical stress, roughness of the internal surface
polyethylene	low cost, ease of transportation and installation, durability, resistance to chemicals, smooth internal surface	withstandable temperature - up to 50 degrees, instability to ultraviolet radiation
polypropylene	withstandable temperature – up to 80 degrees	low rigidity, susceptibility to deformation under mechanical stress
polyvinyl chloride	variety of types and sizes, ease of transportation and installation, smooth inner surface, wear resistance	withstandable temperature – up to 40 degrees

Pipes made of polymers, in addition, can be smooth-walled or corrugated: the former are cheaper, the latter are more durable and elastic.

There are also insulated pipes and pipes with a built-in heating cable - they are used when installing shallow sewers.

How to lay sewer pipes in the ground

Installation of external sewerage into the ground occurs in three stages:

1. Preparation of trenches.
2. Pipeline installation.
3. Backfilling.

Digging a trench

Before digging trenches for laying sewers, calculate the network configuration and determine:

• Optimal geometric shape pipeline: the most efficient and easiest to maintain will be a pipeline with a minimum number of corners and branches; if possible, the pipeline is led in a straight line from the house to the place of wastewater discharge. To avoid obstacles, it is permissible to turn the pipeline at an angle of 30-45 degrees. Right angles in the sewer network are unacceptable due to the increased pressure of wastewater on the walls of the pipeline and the increased likelihood of blockages.
• The depth of the trenches, which allows maintaining the operability of the channels in winter: below the depth of soil freezing per pipe diameter plus 15-20 cm per sand cushion. The minimum permissible trench depth is 0.5 m, the optimum varies from 2 m in the southern regions of Russia to 3.5 m in the northern regions.
• Angle of inclination ensuring free flow of wastewater: usually, a slope of 1-2 cm per meter of pipeline is sufficient;
• Trench width: 40 cm is added to the pipe diameter; for large depths and pipe diameters greater than 20 cm, the trench width is increased for ease of installation.

Mainly for construction modern sewerage PVC products are used, which have many advantages and disadvantages. But pipes of other materials, which have their own characteristics, can be used. Due to the fact that the consumer is primarily interested in which pipe to use for underground sewerage in accordance with his budget, we will consider suitable and affordable varieties.

Preparing trenches for laying sewer pipes

Pipelines with standard sizes are available for sale. Their diameter is determined by GOSTs, that is, pipes can have sizes of 10, 50, 90, 110, 300 and 160 mm. There are also products of large diameters, but they are not suitable for private construction.

Basically, the connection of plastic pipes is made using a similar technology by inserting into a fitting or other pipeline. Fittings include tees, angles, crosses, bends, revisions, plugs.

All plastic products They are light in weight, density 0.95-1.4 g/cm3, and differ in dielectric properties. Pipes have a slippery and smooth surface, which protects them from deposits.

PVC pipes are resistant to alkalis, acids and mineral oils. They differ long-term operation, but at a temperature of 70 degrees their strength begins to lose. Therefore they are not suitable for equipment industrial sewerage. Also, PVC pipes are hard and slightly brittle and have low sound insulation.

Polyethylene pipes differ from PVC products in being more slippery and pliable. Polyethylene is characterized by better noise absorption, resistance to mechanical damage, and better chemical resistance to acids, biomass and alkalis. Polyethylene can be used to produce corrugated products intended for underground installation, resistant to pressure and soil displacement. But there is a risk of pipe deformation when pouring hot water.

installation of inspection wells

More durable material for production pressure pipes is polypropylene. Its softening temperature reaches 140 ºС, melting temperature – 175 degrees. Polypropylene sewerage is resistant to boiling water, but at temperatures below 5 ºС the material becomes brittle. Because of this, pipelines need to be laid underground or thermally insulated. Polypropylene is highly resistant to wear, so it can be used for draining wastewater with a high content of solid abrasive elements.

Cast iron pipes can often be found in old buildings, but they are no longer recommended for new buildings. The only advantage cast iron pipes The advantage of plastic ones is their high noise absorption. Otherwise, they are characterized by large mass, high cost, complex installation. They can be used for laying under roads due to their high strength. If you have chosen these pipes, then it is better to choose products treated with an anti-corrosion compound.

When constructing a sewer system in cities and enterprises, ceramic, reinforced concrete and asbestos-cement pipelines can be used. But they are not used in domestic conditions.

Mostly, home owners refuse cast iron products due to difficult installation and large mass, preferring their plastic counterparts. Plastic pipelines can be laid independently without specialists. In addition, plastic is characterized by resistance to aggressive environmental influences and durability.

For laying internal sewerage, it is better to choose polyvinyl chloride products that are resistant to wastewater with different temperature indicators. The pipes withstand freezing and soil pressure, do not form cracks and there is no loss of shape. In addition, plastic structures are sealed and corrosion resistant.

The rules for laying sewers have one condition that must be strictly adhered to - avoid sudden changes in levels and turns. When laying sewerage, you must comply regulatory documentation SNiP P-G.3-62.

security correct angle sewer pipe slope

If you study SNiP 2.04.01-85, it describes in detail the calculation for choosing the size of pipes for sewerage. It turns out that the suitable pipe diameter for sewerage in a private house is 50 mm, to which you can install plumbing equipment for kitchen and bath. For the riser and toilet, structures with a diameter of more than 10 cm are chosen, since in such places a large water flow is created.

The toilet should be mounted to the riser via a separate pipeline. There is no need to connect products with a smaller size to its drain, otherwise the flow may block the cross-section of the pipeline and create a vacuum in the connected pipe. Because of this, the siphons of other equipment may become dry.

As a result, optimal choice there will be pipes with a diameter of 50 mm for horizontal surfaces that go to the kitchen or bathroom, and for the riser and toilet - 110 mm.

For individual drain points (shower, bidet, sink) you can use smaller pipe diameters of 22-40 mm. Apply here rubber cuffs or couplings with a transition size.

For apartment buildings(with 5 floors) pipes with a diameter of 100 mm are suitable, and in buildings with a higher number of floors pipelines larger than 150 mm should be laid.

Pipes connecting several risers with an outlet to sewer well, can be up to 20 cm in size.

In addition to choosing the appropriate pipe size, you should consider the details of laying the sewer system. The diameter of a horizontal pipeline cannot be big sizes than a riser for draining waste. Installation of horizontal connections is carried out with oblique angles and tees. Right angles are allowed only when connecting the riser to a horizontal section.

At sewer bends, inspections are installed - openings with covers for cleaning pipes.

First, a system design is created, which takes into account the following factors:

• soil composition;
• mechanical loads on the sewer system;
• soil freezing depth;
• burial depth groundwater.

The project reflects the placement of all drain points in the house, on the territory, the location of the water intake point, and the septic tank. The turning points, sewer pipe installation lines, and inspection installation are also indicated.

At this stage, the material used, the need for thermal insulation, drainage system and the number of adapters. For bends and adapters, a slope of 45ºC must be created; from the pipe to the septic tank the slope must be at least 2 cm per linear meter. If the sewerage system is laid above the freezing point of the soil, it is insulated and the connections are sealed with sealant or silicone.

laying sewer pipes at the foundation stage

Do-it-yourself installation of sewer pipes begins after marking the system on the territory, calculating the installation depth, and selecting pipes required diameter, cleaning facility.

Preparatory work involve digging a pit for a septic tank or cesspool, after which a trench is dug for pipe installation. They need to be dug 20 cm lower than the planned level of laying sewer elements.

Plastic is resistant to low temperatures, but to prevent water from freezing in such pipes, they are wrapped with thermal insulation and covered with a dry mixture of cement and sand in a ratio of 1/3.

laying the drain pipe to sewer septic tank

In order for the sewer system to work properly, the slope of the pipes specified in the project must be observed. Trench depth at flat surface near the house should be less than about treatment plant. With a natural slope from the building to the septic tank, a trench is dug with a uniform depth along the entire length of the pipes.

At steep slope It is better to divide the sewer system into compartments with different levels, where drop-off or distribution wells are installed.

The bottom of the trench is compacted and filled with crushed stone or sand layer. Pipes can be laid in a trench to any depth. When the groundwater level is high and the soil is deeply frozen, a buried trench is dug into which the pipeline is laid high. When the water level is low, it is placed near the bottom or in the center of the trench.

Before laying pipes in trenches, you should check the inside for cleanliness. Laying of the pipeline begins from the drain points in the house, after which the sewer is installed towards the treatment plant and connected to the remaining branches of the street drain.

You should remember to install pipes using an O-ring or silicone grease, installing them in areas of turns and branches of auditors. After carefully laying the pipes, they are carefully wrapped with thermal insulation. Inspection wells, auditors and a ventilation pipe are installed near the house. If the highway is long, it will be necessary to create 1 or 2 ventilation pipes.

Before backfilling the system, a control drain should be performed, which will reflect the quality of the pipe installation.

At the end of all work, the sewer pipes are first filled with a mixture of sand and cement to a depth of 15 cm, and then with soil. Inspection wells and revisions are installed 20 cm above the ground level.

Additionally, you can familiarize yourself with video instructions on laying a sewer system, which you can do yourself if you follow the appropriate rules.

Installing sewer pipes for a private area does not require special knowledge and skills, or any special tools. But, at the same time, even small deviations in the installation of pipes in the future can cause major breakdowns.

A layer of earth puts a lot of pressure on sewer pipes; they are sensitive to temperature changes and moisture. It is because of this that it is necessary to prematurely think about the fact that a pipe for a sewerage system in the ground should be installed in all the necessary rules. Installation of sewer pipes underground, installation and insulation of an external sewer system.

Installation of an external sewer system is elementary. The pipes are laid in a pre-dug hole, connected to the system located in the house, and then covered with soil. Before drawing up a plan for laying an external sewer system, you need to find out what type of pipes it is.

The size of the trench depends on the size of the trench you need to dig. An underground sewer pipe has many characteristics. Today, sewer pipes are made from different materials.

Cast iron pipes are very heavy, and the inside is quite rough. Installation of such pipes requires considerable effort. That is why this type of sewer pipes is not often used in private homes. Ceramic pipes are very easy to install, but they are easy to break if accidentally moved.

Concrete sewer pipes are also very difficult to install, so they are rarely used in areas of private houses. Asbestos cement pipes are characterized by their low price and light weight; they are quite easy to install, but they are also easy to damage, and inner surface very rough.

Such pipes have all the needs that are necessary for an external sewer system. They are light weight and resistant to chemicals, very durable, their inner surface is very smooth, resistant to different temperature changes, etc.

Also for sewer systems Fiberglass is also good. It is composed of polyester resins and insulated with fiberglass. But such sewer systems are large in size and have a high price.

The most popular nowadays are plastic pipes.

To install a sewer system on a house site, a plastic underground sewer pipe up to 11 centimeters in size is used and must be red, not gray. Gray PP pipes are used for internal sewerage, and red (orange) pipes are used for external sewerage, as they are thicker and stronger.

Polyethylene, which has high strength, is at an average level.

Sequence of work when installing pipes.

Before installing a sewer system pipe into the ground, you need to make a design. The installation pit should have a small number of bends, and it is best that it be absolutely straight. If this cannot be avoided, then special wells are installed for viewing, so that in case of breakdowns and blockages, this can be easily eliminated.

The correct calculation of the installation depth of the system is also important. In this case, you should take into account how much the ground can freeze in winter. You also need to take into account the required installation slope.

When the project is ready and all factors have been taken into account, the installation of the sewer system can begin. First you need to dig a hole of the required depth, then pour sand onto the bottom and press it. Afterwards, the pipes are laid and combined, and then connected to the sewerage system and drainage system. Next, check the operation and impermeability of the pipes. Then the system is covered with sand, pressing it, and the system is covered with earth.

When designing the installation of a sewer system, you need to take into account the advice of the experts:

• the presence of turns and connections should be kept to a minimum;
• no need to trim parts;
• pay attention to securing the system;
• organize the desired slope; for this you can use a special cable.

Features of insulation of sewer systems.

Experts recommend that the pipes of the sewage system be insulated. For these purposes, you can use insulation in rolls or shaped insulation. Insulation in rolls must be wound around the circumference of the pipe along its entire length during installation of the sewerage system.