Iron pole for electricity in the country. Electric wooden and reinforced concrete poles.

Power lines are needed in both large cities and small villages, as they supply electricity to every home. Until recently, only wooden poles were installed, but they are impractical and eventually rot from rainy weather and the scorching sun. Today, reinforced concrete and metal structures are installed, they are more durable and reliable.

If we compare all these three types, it can be noted that wooden structures are still popular due to their low cost. However, in the city you will not see them anymore, they are most often installed in villages.

The most common today are those that are resistant to various corrosion and destruction and have high strength. They are able to withstand even the lowest temperature conditions (up to -55 degrees). They are circular and rectangular in size.

Features of the installation of electric poles made of reinforced concrete

In order for the supports to be strong, durable and reliable, it is necessary to take into account the natural landscape of the area, the possible maximum wind load on them and the distance between the two supports. The following types have proven to be excellent for street lighting: SV 105-3, SV 95-2, SV 105-5 and SV 110-4.9.

The installation of poles for electricity begins, first of all, with marking the ground, after which you need to install the poles themselves under the supports and run electrical wires on them.
You can pre-mark the installation site using wooden pegs. In this case, the distance between the two supports should not be more than 45 meters, otherwise the wires will sag and break in strong gusts of wind.

Even preparing pits for supports, one more important detail should also be taken into account - the depth of the pit itself should be deeper than the freezing level of the soil. If you do not follow this advice, it may cause the support to be pushed out of the ground as a result of its expansion.

The supports are installed using an indispensable device for these purposes - a manipulator, however, before installation, it is necessary to carefully check the support for various damages. The support must stand vertically, plumb lines and levels will help to install it evenly. After it is correctly vertically installed, its base must be fixed with a thick concrete mortar.

Only specialists should connect electrical wires, otherwise the commission will not accept the work and, as a result, will not allow the pole to be connected to the main power source.

What is the price of electric poles?

If we consider the prices for electricity poles in general, it can be noted that they depend on the size of the pole, on its material and, of course, on the quality.

Reinforced concrete structures are considered the most expensive, their prices range from 11,000 ($ 330) rubles. and up to 15850 rubles. ($475) for one section. The cheaper models are just a simple empty rack, the more expensive models are a nice square shaped rack. Such a rack is designed to install nine wires, in addition to this lighting wire and 4 broadcast wires. They are able to withstand voltages from 0.38 kV to 10 kV.

In many private houses there is a need to conduct electricity from a neighbor's destroyed house or change the existing power line support, cable, many questions arise. Consider what to do, what are the standards for a concrete pillar and is it possible to install it on your own?

What are the standards for installing a concrete pillar on your site?

First, it should be noted that the depth of digging the support in the ground should be below the freezing level, that is, about 1.5-2 meters. It is not possible to install a concrete pillar on your own. Because:

• The height reaches a minimum of 5 meters, it is impossible to install it strictly in a vertical position without the help of a machine.
• The need for insulators, and a special reliable metal mount on the pole, which must reliably withstand all gusts of wind and ice in winter.
• The need to de-energize the line, which finally breaks all the hopes of desperate self-taught electricians.

Is it possible to use alternative methods for installing power lines on your own?

There are many options for homemade poles with a special foundation underneath, four metal posts, insulators, etc. but they are often used in villages. The most affordable way to quickly and efficiently make a power line support is to install a concrete pole.

The height of the pole, as stated by the rules for the installation of electrical installations (PUE), should be at least 5 m, and a maximum of 12, in practice 7-meter concrete supports are used. The distance in hard-to-reach places should be at least 2.5 m, in inaccessible places (mountains, cliffs, rocks) - at least 1 m. installation of the inlet shield, its height must be at least 160 cm from the ground.

In villages, the height is often made about 4 m, so that the truck can safely drive, and since the PUE does not set any restrictions on the design, all available materials, home-made metal trusses, beams are used, which is highly discouraged.

To install a concrete support you will need:

• Drilling machine;
• A crane that will set the pole in a vertical position;
• Truck for transportation of the post;
• A team of electricians, with a special lifting machine with a retractable cage for line installation.

This team is able to reliably install a support for many decades in a matter of hours, and guarantee us uninterrupted power supply for many years.

Today humanity cannot imagine existence without electricity. An uninterrupted supply of electricity to each room depends on the competent laying of networks from directly to each consumer. This goal led specialists to the invention of reinforced concrete electric poles. The devices do their job very well. Before starting work, you should calculate how much the materials cost and how long the installation will take.

Before making an electric pole, it is necessary to take into account the advantages of such supports. The advantages include durability. Reinforced concrete electric poles can serve consumers for many years. It is important to take into account that high-quality building materials should be used in the construction of supports. They are more expensive, but their use guarantees durability to each concrete pillar.

Another plus is the choice of design. With the help of additional building materials (panels and other means), you can arrange. In addition, during installation work, specialists will not need expensive special equipment. This allows you to do the installation yourself and not turn to professionals.

How many disadvantages do such supports have? A concrete pole for electricity has only one drawback. We are talking about laying the foundation, which is necessary in order to securely install a reinforced concrete electric pole. Otherwise, the structure may fall.

Application

• power lines;
• street lighting electrically;
• transmission of electricity.

Installation

When installing an electric concrete pole, it is important to observe a number of conditions. First of all, builders must take into account the landscape, the strength of the wind gusts in the region, the traffic density of cars. Also, specialists should measure the distance between reinforced concrete supports. It is necessary to determine how many meters there are between each pillar. During installation work, a thorough check on the strength of the supports is carried out.

Execution of work

For uninterrupted transmission of electricity, it is necessary to install a structure in accordance with safety regulations. For the correct construction of supports, builders should adhere to the following rules:

• install poles depending on the purpose, terrain features and laying, special equipment systems;
• perform high-quality installation work;
• fix the wires on the poles according to all the rules (PUE).

Each reinforced concrete support is installed in stages:

1. First you need to mark the selected territory.
2. Then the specialists begin drilling holes for the poles.
3. After that, you can start installing the supporting structures. For this, special equipment is used.
4. The last stage is the installation of electrical wires.

Selection and marking of the territory

For proper installation of concrete structures, it is necessary to adhere to safety rules. In particular, the marking of the selected territory involves choosing the place for erecting supports and determining the distance directly between the pillars.

The calculations should take into account the expected loads, as well as the characteristics of a particular area and soil. The markup should be done in such a way that as a result, uniform illumination of the areas by each pillar is achieved. Specialists carry out installation according to the technology of installation work. When marking, the number of concrete pillars and their location are determined.

Drilling

After marking is completed, specialists begin drilling, following the marked parameters and taking into account the characteristics of the soil at the installation site. At this stage of work, a technique is used, which is a drill placed on a special platform.

Installation of reinforced concrete pillars

Before starting work, it is necessary to recheck the supporting structures for possible cracks. Their vertical alignment is carried out using special levels and other means. A manipulator is used to erect concrete pillars. A thick cement mortar is poured into each pit where the supporting structures were installed. To give structures additional stability, specialists install props made of reinforced concrete or metal.

Work control

When installing and assembling support structures, you must carefully monitor the strict observance of the parameters:

1. Measurement of a pit intended for reinforced concrete supports. For reliable installation, the design of the pit must be deep.
2. The quality of the material from which the structure is made. If the reinforcement is visible and cannot be covered with concrete, the product will soon begin to collapse.
3. Specialists must install metal spacers in a dug hole in the place where the post is in contact with the ground. The Zeta workers should cement the support structure with high quality cement mortar.
4. Specialists need to install the structures in a strictly vertical position using a special plumb line.

After the installation is completed, the installation of metal structures for attaching insulators begins. For this, clamps are used. There are also traverses that are not intended to transmit current. They are only needed to secure the electrical wires. Their dimensions will depend on the number of electrical wires that they have to hold.

To prevent possible corrosion of the traverses, it is necessary to cover them with a special agent that will ensure their protection. In addition, experts fix a cover that will protect them from the harmful effects of the environment. The laying is completed with the installation of electrical wires. At the same time, workers should take into account that the above actions must be carried out by representatives of an organization that has the appropriate permission.

Conclusion

Work on the installation of reinforced concrete structures for power lines is a responsible and complex process that involves the use of special equipment. If workers take into account the prescribed rules and safety precautions, they will be able to build a reliable and durable structure. Such a support will transmit electricity uninterruptedly for many years.

It is also important to remember that installation work should be carried out by employees of organizations with the appropriate permit.

Installation of additional electric poles may be needed in the private sector, especially if the wooden poles have become unusable. You probably noticed rotting and rickety wood poles from which power lines run? Previously, only these were mounted, but after the expiration of the service life, old samples should be replaced with new ones.

Today, factories produce reinforced concrete and metal structures, and all because they are more durable, stable and reliable, they are not afraid of temperature changes, insects and precipitation. Unfortunately, products for electricity are not cheap, so the installation of metal or reinforced concrete poles is affordable only for organizations funded by the state.

You can put wooden poles with your own hands; in villages and villages, just such poles for electricity are still used.

Instructions for installing poles for electricity

Before starting the installation process, it is necessary to study the features of the area, which can significantly affect the quality and duration of the use of electricity poles. So, pay attention to the factors:

• natural landscape - on which site the installation is being carried out, for example, in a lowland;
• optimal spacing between supports.

The installation guide for electricity poles is as follows:

1. Mark the ground. Use pegs and twine for this. The distance between the supports should be approximately the same.
2. Now you need to drill a well of great depth, so you can not do without special equipment. Drilling and crane transport comes to the aid of builders.
3. While one part of the brigade is working on the machines, the second part can, without wasting time, take up other earthworks. Armed with a hand drill, the workers dig holes, laying the diameter in accordance with the type of hand drill. An ideal handy tool would be a gas drill for drilling holes, installing poles with its use takes much less time, especially since the process can be done by hand.
4. Further, the finished supports are fixed using a drilling machine manipulator or a crane.
5. Specialists carry out reconciliation vertically.
6. The pillars are firmly fixed in the pits, and the bases are securely fixed.
7. It remains to mount power transmission line traverses on electric poles and lay wires through which current will flow to houses, to the street, etc., depending on the purpose of laying highways.

Rules for installing poles for electricity

It may seem to the layman that the post holes have the same depth, but this is not so, because each recess depends on the following factors:

• line type;
• the nature of the earth, the composition of the soil;
• copy option.

The depth of the pit is laid taking into account the turning of the poles for electricity - the overturning of the supports should not occur even in a natural disaster. There are also intermediate and main pillars - holes for the first ones are dug by self-propelled drilling equipment, where there is a crane for fixing the pillars in the soil.

Where the track is characterized by poor passability, the pit is reached by manual digging. At the same time, it is important to observe the period between fixing the pit and installing the support - no more than 1 day.

As for equipment, the following equipment cannot be dispensed with during installation:

• jib cranes;
• cranes, with the help of which the installation of supports of the KVL type is carried out;
• tractor.

If the pit has a cylindrical shape, the diameter of the rack becomes the reference point - the first indicator cannot exceed the second by more than 25%. If the difference increases, then the upper crossbar is installed. Crossbars on intermediate pillars are placed along the axis of the overhead line.

It is impossible to lift and immediately fix the free-standing poles with a crane, so that the supports do not fall, the workers securely fix the base with temporary braces, after which they place the upper and lower crossbars. The final fastening is carried out using the method of backfilling with soil, when alignment has already been made by backfilling into the sinuses of the earth with layer-by-layer tamping.

Whether the verticality of the poles for electricity, the voltage on which is 10 kV, is taken into account, is checked with a plumb line. If the voltage is increased to 35 kV, a theodolite is used. So that the traverses do not rust over time, it is advisable to walk over the material with a bituminous varnish composition.

The installation of insulation is carried out with polyethylene caps, in fact, the procedure looks like this:

1. Caps should be heated in water up to 80-90 degrees Celsius.
2. Heated caps are sequentially placed on the pin, lightly hitting with a wood hammer.
3. The outer surface of the tip is a thread onto which the insulator is screwed.

Who should deal with the arrangement of pillars

You already understood that installing poles for electricity with your own hands is problematic - this requires equipment and special knowledge. Therefore, if there is a need to equip poles, you can leave a request at the nearest RES department. Privately, certain firms also perform such work, only this requires obtaining permission.

Before using the help of employees of a private company, read reviews on the Internet, find out how many objects the company has already equipped. If everything is in order, it is desirable to conclude an agreement on the provision of services and responsibilities of each party to the contract.

How to install power lines

The technological procedure for the installation of a power line (power line) is carried out by the same company that you hired. It consists of several stages:

1. Preparatory. The task of specialists is to get acquainted with the section of the route, outline it, dig pits for poles and bring the necessary premises.
2. Basic. It includes the installation of poles for electricity, the fixation of insulators, the pulling of wires and cables.

The cost of the pillars

Many are interested in how much the purchase of supports will cost. Prices vary within different limits and depend on the size of the pillars, the material used and its quality:

1. Reinforced concrete installations cost from $330 (in Stavropol) to $475 (in a joint venture for 1 section).
2. Metal ones are cheaper - from $ 58 to $ 105 for 1 piece.
3. Wooden ones are not in demand in the city, which cannot be said about the villages - the cave age still reigns here. $26 per rack saves rural budget money.

In any case, no matter how reliable the supports are, it is important to fix them not only in the reinforced concrete foundation, but also in the soil - this is the correct installation, which will extend the service life to the maximum possible.

At present, we are surrounded by everyday bustle and all the "charms" of city life. The noise of vehicles, the polluted air of the metropolis and much more, to which, in principle, we are already accustomed.

But sometimes, an uncontrollable desire to drop everything and rush away from all worries and problems creeps into our thoughts. In this case, those people who have a summer cottage outside the city are lucky.

In the country, we can spend the weekend and “move away” from everyday worries. But most of us are already accustomed to urban comfort and all the benefits of civilization.

As you might have guessed, the most important factor for a comfortable stay in the country is electricity. Below we will discuss what is needed to connect suburban area to the power line .

First of all, we should make sure that there is a power line nearby along the street.

After we are convinced, we need to connect our site to the power line. How to do it? Of course, before calling the fitters from the power grid, we need to prepare the conditions for their work.

Of course, if our house is located near a power line, we can ask to "throw" the eyeliner directly on the house, without unnecessary supports and poles. But if the house is removed from the line? Then we have to install a pole for electricity.

You can buy these in special companies. They may cost differently. The price will depend on both the material and its dimensions.

Regarding the materials of manufacture, they are different. For example:

• concrete;
• wooden;
• metal;
• composite.

Which is better to install, it's up to you. If you want to install the supports yourself, then you will have to familiarize yourself with the rules for installing poles from the selected material.

It's important to know: if you make poles from improvised materials that have not undergone special processing, then in this case there can be no question of its durability and reliability.

It is worth noting that if you decide to install wooden poles, it is better not to engage in "amateur activities", but to buy material for manufacturing in a specialized store. And only then, with your own hands or with the help of specialists, make poles of the size, shape and height you need. Or just order ready-made ones.

What material to choose

Each of the materials has its pros and cons. For example, take wooden poles.

They have a number of advantages relative to reinforced concrete, which are widely used in our country.

The positive aspects of wooden poles are in the following indicators:

• Elasticity (due to which the pillars withstand twice the bending load);
• Price;
• Dielectric properties;
• In the event of a column falling, there is no domino effect;
• The service life in contact with the soil is 20% longer than that of a reinforced concrete pole.

Of course, it weighs a lot, so you should not count on the fact that you can handle the installation without the help of technology.

But reinforced concrete electric poles are good because they are resistant to different kind corrosion and temperature fluctuations. However, they are quite expensive.

Just concrete poles are cheaper. They have the shape of an ordinary pipe, but, due to their fragility, require additional support.

A metal pole is much more common in our time, due to its cost relative to reinforced concrete structures. As a rule, they are most often galvanized.

Composite poles, on the other hand, have not yet been widely used in our country due to their high cost and their shortage. To get acquainted with the appearance of each, you can find a photo of the type of column of interest on the Internet.

Installation cost

The final price will be the sum of the cost of the pillars themselves plus the cost of installing them.

The approximate price for the installation of electric poles is as follows:

• to install one pole costs about 30-35 thousand rubles;
• the cost of five pillars will cost 100-120 thousand rubles;
• for ten supports you will have to pay at least 170 thousand rubles.

How to properly install

After you decide on the choice of material, you need to calculate how far the poles will be from each other, and how many of them you will need in general to provide electricity to the entire site.

For this, there are standards established by electrical network engineers. This takes into account the length of the pole, and which wire will be used. From the calculations you can find out how many meters should be between the pillars. After that, you can start drilling wells for further installation of pillars in them.

Also, if you need to deviate from the course of the line and, for example, “power up” the shed, it is not necessary to install all the same poles on the way to it. There are small intermediate racks for these purposes. They do not require a support post due to their small size. They can also be used for street lighting at their summer cottage.

Note: you should not independently connect the site to the main line, even if you know how to handle electricity! For self-connection, you will be fined unambiguously! Therefore, it is better to obey the requirements of the authorities. And then your home will be bright and comfortable.

How to put a support under the power line manually, see the following video: