Replacing heating pipes in an apartment building

Single pipe heating system

Single-pipe heat supply to an apartment building has a lot of disadvantages, the main one being significant heat losses during the transportation of hot water. In this circuit, the coolant is supplied from the bottom up, after which it enters the batteries, gives off heat and returns back to the same pipe. Hot water first reaches the end consumers living on the upper floors in a barely warm state.

Another disadvantage of such heat supply is the impossibility of replacing the radiator during the heating season without draining the water from the entire system. In such cases, it is necessary to install jumpers, which makes it possible to disconnect the battery and direct the coolant through them.

Thus, on the one hand, as a result of installing a single-pipe heating system circuit, savings are obtained, but on the other hand, serious problems arise regarding the distribution of heat throughout the apartments. Residents freeze in them in winter.

Choosing the right material

To install a heating system riser, pipes made of stainless steel or plastic are usually used; let's look at their features:

Plastic

Polypropylene pipes and fittings

Today, the use of plastic pipes for arranging heating pipelines has become widespread due to several undoubted advantages:

1. Easy to do the installation work yourself. Connections are mainly made using a special pipe soldering iron.

Using a soldering iron to install plastic pipes

1. Flexibility. Polypropylene products can bend, which allows you to contour various obstacles without the use of additional fittings.
2. A light weight. This greatly simplifies the transportation and lifting of pipes to the upper floors of apartment buildings.
3. Relatively low price. Plastic is always cheaper than metal.
4. No corrosion processes.

But before choosing polypropylene, you should understand that its strength characteristics strictly comply with the standard operating standards of the heating system and are not designed for such critical conditions as:

• Pressure surges in the heating main from 4-5 to 10-12 atmospheres. Usually this happens only due to the negligence of the mechanics on duty at the boiler room, but, unfortunately, with constant regularity.
• Water hammer. Formed when the heating system suddenly starts up after a summer break.
• Critical temperatures. They can be observed during the annual spring testing of the heating main.

Advice: if you still decide to use plastic pipes, then opt for reinforced models that can withstand much higher temperatures.

Sample of reinforced polypropylene pipes

Metal

Photos of metal pipes intended for heating systems

In this case, everything is exactly the opposite. Steel products are more expensive, heavier and do not have the flexibility of plastic. But they can withstand any possible temperature of the supplied coolant and high internal pressure. So, if you want to have confidence in the stable operation of your heating system, then it is better to choose the installation of a metal pipeline.

The ideal option from the point of view of practicality and reliability would be to use a galvanized pipe DU-20, which, among other things, is protected from the occurrence of corrosive processes.

Sample of steel water and gas pipe DU-20 with anti-corrosion coating

Central heating of apartment buildings

Through main pipelines, coolant from the central boiler room is supplied to the heating unit of an apartment building and is further distributed among the apartments. In this case, additional adjustment of the degree of hot water supply is carried out directly at the heating point, for which circular pumps are used. This method of supplying coolant to the end consumer is called independent (more details: “Central heating is both pros and cons”).

In addition, dependent heating systems are used in apartment buildings. In this case, the coolant is transported to apartment radiators without additional distribution directly from the thermal power plant. In this case, the water temperature is determined regardless of whether it is supplied through a distribution point or directly to consumers.

What you need to start working with galvanized materials

The first step is to purchase galvanized pipes DN20 in the required quantity. In addition, a mandatory element of all work will be a welding machine, without which it is impossible to repair risers in an apartment building.

Gas welding can greatly facilitate the work, especially if installation conditions are difficult. If you have a welding machine, it is worth purchasing long and short threads. Shut-off valves and a radiator will be attached to them.

In addition, you will need:

• three locknuts for the radiator;
• three runs, which will go one at a time to the jumper and liners;
• two cast iron or brass tees;
• two couplings;
• three valves for DN20 pipe.

The latter are needed to control the heat in the room, since they can block or limit the flow of water into the battery. In addition, you should purchase only ball valves, as they are the most convenient to use.

Who should change the batteries is the responsibility of the parties, heating repair

At the same time, the management company must perform its functions in such a way that the condition of the common property at any time ensures the uninterrupted provision of high-quality utility services. An old, rusty riser pipe is an indicator of a clearly low level of work on the maintenance of common property. Find out what the responsibilities of the management company are in the article https://realtyinfo.online/6180-osnovnye-obyazannosti-polnomochiya-uk-soglasno-zakonodatelstvu. Who pays for the work Any work must be paid; Nobody argues with this. The question is who bears the costs: residents who live in an apartment with a problem riser, the management company, or all owners of the premises of this building must pay jointly. This difficult topic causes constant controversy and has different interpretations.

Replacing risers in an apartment building, who should do this?

How to change the heating in this case? ATTENTION! If you need to change the heating elements in your apartment yourself or equip it with improved batteries, this can only be done with the consent of all owners of the apartment building. Now apartment owners are carrying out large-scale work to improve their homes, changing the layout, location of the plumbing and heating systems in the premises

Installation of new radiators without the consent of the remaining residents of a multi-story building is considered arbitrariness. The violator may even be held accountable, especially if the heating operation is disrupted or its quality has decreased. In the event of a pipe or battery leak, the replacement is mandatory by the management company. Also, at the expense of the management company, the heating system is modernized if its service life has expired. How to get permission? Older models of heating devices may not meet quality requirements.

Riser assembly

• Pipes, cut in the required places and having threads on both sides, will need to be passed through the ceilings, after which they are connected by couplings with threads on the riser. As a winding, it is better to use plumbing linen with paint or silicone sealant. In addition, replacing the heating riser in an apartment can also be done using a polymer thread.
• The second option will be cheaper, but given that the work is being done for a long time, it is better to use flax with a sealant, since the first guarantees tightness, and the second can neutralize the effects of fading and rotting.
• Next, you need to screw the tees onto the threads. It is worth maintaining a distance of 50cm between the internal threads in order not to subsequently install the eyeliner under tension. The latter looks ugly, in addition, it ensures that the locknut is skewed, as a result of which a large amount of water and heat will come out.
• Valves are screwed into the tees.
• In the valves that cut off the radiator, it is necessary to screw in long pipes (pipes with a short thread on one side and a long thread on the other). The locknut and radiator cap are installed on them until they stop.
• It is worth mounting the jumper in the same way as the squeegee, namely, it is important to screw a long thread with a lock nut screwed all the way into the tee. Next, the short thread, which is aligned with the thread of the valve, is wound up and screwed into the latter, but at the same time, the long thread must be turned out of the tee to the length of the short analogue. The last step is to rewind and tighten the locknut.
• After all the manipulations, you can proceed to connecting the radiator. It is hung on brackets so that the axes of the connections coincide with the axes of the threads for the plugs (read: “Replacing a heating radiator in an apartment - process guidance”). After this, it is necessary to fit the previously wound plugs into it. The same thing should be repeated with locknuts.

Providing heat to apartment buildings with a centralized heating system

As is known, the provision of heat to a significant portion of the housing stock is carried out centrally. And, despite the fact that in recent years more modern heat supply schemes have appeared and are being implemented, central heating remains in demand, if not among owners, then among developers of multi-apartment housing. However, it should be noted that many years of foreign and domestic experience in using this heating option have proven its effectiveness and right to exist in the future, subject to trouble-free and high-quality operation of all elements.

A distinctive feature of this scheme is the generation of heat outside the heated buildings, the delivery of which from the heat source is carried out through pipelines. In other words, centralized heating is a complex engineering system distributed over a large area, providing heat to a large number of objects at the same time.

Central heating system

No one will argue that the centralized system of supplying heat to apartment buildings, in the form in which it now exists, is, to put it mildly, morally outdated.

It's no secret that losses during transportation can reach up to 30% and we have to pay for all this. Refusal of central heating in an apartment building is a complex and troublesome procedure, but first, let's figure out how it works.

Heating a multi-storey building is a complex engineering structure. There is a whole set of drains, distributors, flanges that are connected to a central unit, the so-called elevator unit, through which the heating in an apartment building is controlled.

Two-pipe heating circuit.

There is no point in talking in detail about the intricacies of the operation of this system now, since this is done by professionals and the common man simply does not need it, because nothing depends on him. For clarity, it’s better to consider the heat supply diagram to the apartment.

Bottom filling

As the name implies, the distribution scheme with bottom filling provides for the supply of coolant from bottom to top. Classic heating of a 5-storey building is installed exactly according to this principle.

As a rule, the supply and return lines are installed around the perimeter of the building and run in the basement. The supply and return risers, in this case, are a jumper between the mains. This is a closed system that rises to the top floor and descends again to the basement.

Two types of bottling in comparison.

Despite the fact that this scheme is considered the simplest, putting it into operation is a troublesome task for mechanics. The fact is that at the top point of each riser, a device for bleeding air, the so-called Mayevsky valve, is installed. Before each start, you need to bleed the air, otherwise the air lock will block the system and the riser will not be heated.

Important: some residents of the upper floors try to move the air release valve to the attic so as not to have to deal with housing and communal services workers every season. This kind of modification can be expensive.

The attic is a cold room, and if you stop heating for an hour in winter, the pipes in the attic will freeze and burst.

A serious disadvantage here is that on one side of the five-story building, where the input passes, the batteries are hot, and on the opposite side they are cool. This is especially felt on the lower floors.

Option for connecting radiators.

Top filling

The heating device in the nine-story building is made according to a completely different principle. The supply line, bypassing the apartments, is immediately carried out to the upper technical floor. An expansion tank, an air release valve and a valve system are also located here, allowing the entire riser to be cut off if necessary.

In this case, the heat is distributed more evenly across all radiators in the apartment, regardless of their location. But here another problem emerges: the heating of the first floor in a nine-story building leaves much to be desired. After all, having passed through all the floors, the coolant reaches downstairs already barely warm; this can only be combated by increasing the number of sections in the radiator.

Important: the problem with freezing water on the technical floor, in this case, is not so acute. After all, the cross-section of the supply line is about 50 mm, plus in the event of an accident, you can completely drain the water from the entire riser in a few seconds, you just need to open the vent in the attic and the valve in the basement

Temperature balance

Of course, everyone knows that central heating in an apartment building has its own clearly regulated standards. So during the heating season, the temperature in the rooms should not fall below +20 ºС, in the bathroom or in the combined toilet +25 ºС.

Modern heating of new buildings.

Due to the fact that the kitchen in old houses is not very large, plus it is naturally heated by periodic operation of the stove, the permissible minimum temperature in it is +18 ºС.

Important: all the above data is valid for apartments located in the central part of the building. For side apartments, where most of the walls are external, the instructions prescribe an increase in temperature above the standard by 2 - 5 ºС

Heating standards by region.

Reasons for replacing the heating system

In apartment buildings and private houses of old construction, radiators made of cast iron or steel were installed. This material is prone to corrosion and dirt sticking to the walls, which leads to blockages and leaks. But even modern radiators installed in new houses can fail. There are a number of possible reasons why heating pipes may fail and need to be replaced.

Replacing old pipes with bimetallic ones

1. Incorrectly installed circuit. There are a number of rules, technologies for assembling heating in an apartment, and the order of arrangement of the main elements (taps, pumps, expansion chamber). Trying to reduce the cost of housing, developers save on installing all the necessary fittings. For example, if repairmen did not provide shut-off valves when connecting the radiator, then it will be impossible to remove it for repair or cleaning. You will need to turn off all water supply to the system. It also happens that some unscrupulous craftsmen make changes on their own, without thinking about the consequences, which they then have to resort to completely replacing the riser and heating pipes
2. Low temperature. This is a fairly common reason for redoing your design. The lack of heat can be completely corrected by simply replacing the batteries or increasing the diameter of the pipes.
3. Incorrectly created wiring system. It depends on the circuit how exactly the water will circulate in the radiators, and whether the supply and return directions coincide. If the circuit is chosen incorrectly, you will have to completely redo the entire heating system.
4. High breathability. For high temperature structures, diffusion is a big problem. The material from which the pipeline is made can allow air to pass through. The presence of air accumulations in the hydraulic system can cause serious problems and lead to cavitation processes, that is, the occurrence of noise and water hammer. According to established standards, it is allowed to use materials that have an anti-diffusion coating, the penetration coefficient of which is not higher than 100 mg/m2 per day.

Nevertheless, experts identify two main problems when replacing heating pipes is required:

• Severe wear of the pipeline. This is especially true in old houses where metal structures predominate. Over a long service life, they become overgrown with deposits and cease to function effectively.
• Carrying out major repairs. If you have a private house and you decide to remodel, change the location of the boiler or boiler. If this is an apartment building, then a planned overhaul of the riser and pipes in the basement is carried out.

Accumulation of rust and dirt in cast iron batteries

But whatever the reason, it will take a lot of effort and financial costs to create a high-quality heating pipeline. To do this, first select the material from which the structure will be made.

About autonomous heating

An autonomous heating system for an apartment building is the dream of many apartment owners, but the process of switching to independent heating is difficult and expensive. This includes lengthy legal hassles and a technical solution to the issue - the correct selection of equipment, installation and commissioning. And the problems associated with the technical implementation of the project are much simpler.

Autonomous boiler room of an apartment building

The market for household appliances, including heating, offers a wide range of boilers, radiators, pipes and all kinds of fittings, and in every city there are several dozen specialized companies working in this direction. The organization will not only do all the installation and configuration work, but also issue all the necessary acts and permits. But the cheapest thing, of course, is to install a heating boiler and install the pipes yourself.

Basic documents required to connect the autonomous heating of an apartment building yourself:

Diagram of violations in the operation of the DSP

Having completed all the certificates and acts, you can begin to put your dream into practice and cut off the radiators and pipes of the house or apartment DSP wiring. And don’t forget to shut off the heat pipe input and seal it. In houses to which a central heating system is connected, this is easier to do than in high-rise buildings - in apartment buildings, pipe risers were laid throughout the premises, and to dismantle them, you will have to obtain the consent of the neighbors above and below, and the continuation of the cut pipes will have to be looped.

Important: Risers that are not connected to your radiators, but pass through the apartment, are considered a heat source. In order not to pay for their thermal energy to the housing office, the pipes should be properly insulated - this way you can prove that you do not use central heating

Replacing heating risers in an apartment and increasing heat transfer

Over time, any heating system deteriorates and heats the room much worse. This is especially critical for old houses. In most of them, the pipes and radiators are cast iron; in many places they have become corroded and are beginning to leak. Or they have become clogged with salt deposits during operation and are unable to provide the necessary heat transfer and transfer of coolant in the required volume. It is in such conditions that replacement of heating risers, pipes and radiators is required.

Replacement of heating risers, pipes and radiators

However, not everything is as simple as it looks at first glance. Technically, replacing heating risers is quite simple. The question is: do you have the right to do this? And who will be responsible for the consequences. And there is another problem - how will replacing the heating riser in the apartment (yours) relate to what the neighbors did (above and below).

In any case, it is quite difficult to find an unambiguous solution. Everything will depend on the specific management company (MC) and the locksmith, as well as your persistence and determination to resist the management company’s attacks. According to current regulatory documents and regulations, in-house heating, which includes: risers, heating elements, shut-off and control equipment, is classified as common property.

Central heating riser in the basement of a multi-storey building

Therefore, you have already paid for its maintenance, including the replacement of heating pipes in the apartment, as part of your monthly payments under the heading “general household expenses”. This is where the main contradiction arises - you yourself do not have the right to do anything, and the management company will not do anything at its own expense. Any alteration or replacement of heating pipes is met with hostility, and in the best case, you will be asked to do it at your own expense.

True, there is one nuance here. If there is a shut-off valve at the outlet from the common house riser, then everything located behind it is already your property; if there is no such tap, then it is common property, and it is managed either by the management company or the general meeting. This is a rather complex issue, and you may need to seek the help of a lawyer if, for example, it is important for you to replace heating pipes with polypropylene.

It is much easier to do such work in your own home. In this case, there are no described difficulties, and you can change the heating in a private house at any time, if you, of course, are the owner.

Example of replacing part of a riser

But leaving aside for now the questions of who should do what and be responsible for what, let’s consider purely technically how it is possible, for example, to replace old pipes with plastic ones. This will allow you to remove worn-out pipes clogged with deposits, installing new ones, and thus help solve the problem of how to increase the heat transfer of a heating pipe - due to the passage of more coolant.

In this case, what your neighbors have will be critical for completing the work. If the neighbors above have already replaced the metal riser pipe with a polypropylene one, then you should install the same one.

It is best if you can agree with them on the possibility of connecting to their junction. In this case, you are dismantling the heating in the apartment, i.e. cut out all the old pipes, cut out an adapter from plastic to metal from a neighbor, determine locally the required length of pipes that need to be laid. Then the metal scrap is pulled out from the ceiling, a propylene pipe is inserted in its place and soldered through a propylene coupling to the neighbor’s pipe.

Connecting a metal and polypropylene pipe using a special coupling

In cases where your neighbors have metal left and they do not allow you to make a joint at their place in order to go through the ceiling, you will have to cut your pipe under the ceiling and cut a thread on its remains. A transition coupling for polypropylene is placed on it, and the corresponding pipe is already connected to it.

If you want the heating replacement in the apartment to be complete, i.e. If you are planning to replace radiators, then you need to start work with them.

There are quite a lot of them, and of very different types, but regardless of this, there are general rules, the implementation of which will allow you to get a good result:

• all radiators in the apartment must be placed equally, on the same level;
• the battery must be positioned strictly vertically;
• its top should be five cm below the window sill and six cm above the floor;
• when attaching a radiator, there should be one mounting bracket per square meter of its surface;
• the front surface of the battery should protrude beyond the edge of the window sill.

Correct installation of a heating radiator

What else can be done to improve heating in the apartment?

If you set yourself the task of how to improve heating in an apartment, then perhaps the measures listed will not be enough for this. In many cases, a good result can be achieved by ordinary window insulation, which reduces heat loss. A heat-reflecting film located on the wall behind the radiator may also be useful. Together with the fact that the heating will be replaced (pipes and clogged radiators), such measures will ensure the flow of additional heat into the apartment.

Foil screen behind the radiator

In those cases when you want to have complete independence and not depend on the timing of the start-up of central heating, you should think about how to convert the heating in the apartment to individual heating. This task is far from simple, but if you have a gas water heater installed, then it is quite possible that you will be able to get permission to turn off the central heating and install your own gas boiler.

Of course, this will require significant financial costs and lengthy approvals, which will not necessarily be completed successfully. But replacing the heating system (central with individual) will allow you to adjust both the temperature in the apartment and the ability to turn on the heating at any time you need according to your needs.

In many cases, especially in old houses, the heating has been running for many years, and sometimes the pipes become clogged with salt deposits, and even begin to leak due to corrosion. One of the measures to improve heating in an apartment is replacing pipes, risers and radiators.

otoplenie-doma.org

Self-replacement

Not many apartment owners wait for major repairs or an emergency. Many people decide to replace old equipment with modern equipment at their own expense. There are several options for notifying the management company of your intentions:

• Phone call to the building management. The dispatcher, whose number is on the bills for utility bills, will give a substantive answer when it is possible to carry out the necessary work. In this case, it is worth asking the dispatcher to introduce himself. This usually speeds up the process.
• Internet sites where you can present a problem and ask for it to be solved. Not all management companies provide this opportunity, of course, but many already do.
• The usual way is to go to the management company and leave a request to replace the existing radiators with bimetallic ones (or others) throughout the apartment. It is better if several residents submit such applications.

Artist selection

Replacement of heating devices can also be carried out by third-party certified plumbers. On the one hand, it makes more sense to order this service from a familiar company, which in any case will turn off the risers. On the other hand, as experience shows, it turns out to be more expensive. When making a decision, you must remember that hiring even very competent plumbers will not relieve the apartment owner from responsibility in the event of problems with the system as a whole. Therefore, it is more reliable to replace heating batteries in an apartment through the housing office. And remind the management company employees of this right. For example, the choice of new heaters is up to the resident. And he chooses them to his taste, taking into account his interior. Exceptions may be made to technical specifications, which must be agreed upon with professionals - UK plumbers.

Having concluded an agreement with a certain management company, you involuntarily gain confidence in its specialists in the field of housing and communal services. Therefore, it is easier to immediately be persistent and get the desired equipment replaced. A huge advantage of cooperation with the management company is the confidence that new heating devices will be approved, registered, and you won’t have to wait for any claims regarding their installation.

Housing and communal services in Russia.

The battery, which is a common property of the house, must be replaced by the management company at the expense of the money that you regularly and monthly paid and are paying under the article “maintenance and repair of the home.” Here is what is determined by the laws and rules in this regard: (hereinafter - abbreviated excerpts without changing the meaning of the document ):

A. RULES FOR MAINTENANCE OF COMMON PROPERTY IN AN APARTMENT BUILDING (approved by the Resolution of the Government of the Russian Federation of August 13, 2006 N 491):

“...2. The common property includes: ... e) mechanical, electrical, SANITARY and other equipment located in an apartment building outside or inside the premises and serving more than one residential and (or) non-residential premises (apartment);

6. The common property includes an intra-house HEATING system, consisting of risers, HEATING ELEMENTS, control and shut-off valves, collective (common house) heat energy metering devices, as well as other equipment located on these networks...”

B. MDK 2-04.2004 “METHODOLOGICAL MANUAL FOR MAINTENANCE AND REPAIR OF HOUSING STOCK” (approved by order of the USSR State Construction Committee in 2004):

LIST OF WORK INCLUDED IN THE FEE FOR HOUSING MAINTENANCE

LIST OF WORK INCLUDED IN THE PAYMENT FOR REPAIR OF HOUSING (current repairs) ... 1. Central HEATING: Replacement of individual sections of pipelines, sections of heating devices, shut-off and control valves; ... restoration of destroyed thermal insulation.

B. “RULES AND STANDARDS FOR TECHNICAL OPERATION OF HOUSING STOCK” (approved by the Post of the State Construction Committee of the Russian Federation dated September 27, 2003 No. 170):

“... II. ORGANIZATION OF MAINTENANCE AND CURRENT REPAIR OF HOUSING STOCK

LIST OF WORK RELATED TO CURRENT REPAIRS... 11. Central heating Installation, REPLACEMENT and restoration of functionality of INDIVIDUAL ELEMENTS and parts of elements of internal central heating systems, including house boiler rooms.” Anastasia! In fact, to replace an EMERGENCY radiator, the management company must buy a new one at the expense of funds “for the maintenance and repair of property,” but for this it is necessary that the appropriate paper be drawn up - an act on the inspection of the radiator, the discovery of an irreparable defect on it and the need to replace it, signed You and the management company employees, which, of course, they won’t do.

Anastasia! Politely shove the above text under the noses of the impudent robbers from the Criminal Code and threaten them to send a letter of complaint to the prosecutor's office about their extortion.. And if the Criminal Code refuses to replace the battery at the expense of funds for the maintenance and repair of common property, write letters of complaint to the State. housing inspection, the city administration and the prosecutor's office. Good luck to you!

Replacing risers in an apartment: legal aspect and step-by-step instructions

When we move into a new apartment, we will never see rusty and dilapidated pipes there. If you wish, you can create designer masterpieces without thinking about replacing the risers in the house. When the apartment is already over thirty, you can’t get away with cosmetic repairs. Often in such houses, water supply and sewerage systems break down, pipes and risers leak. Buying new plumbing fixtures will not solve the problem. Even installing a pipeline made of modern materials inside the home does not always help. The risers in the apartment need to be replaced. Perhaps the root of evil is there.

Changing the riser: legal aspect

The riser is the common property of the management organization (housing office, housing department, etc.). An agreement is drawn up with this organization. Let us highlight the main points in the standard document.

1. The tenant (that is, we, mere mortals) is obliged to carry out routine repairs in the occupied premises (at his own expense):

• whitewash, paint or paste over walls, ceilings;
• paint floors, doors, window sills, window frames;
• paint radiators;
• change window and door fixtures;
• repair internal engineering networks (heating, hot and cold water supply, electrical wiring, gas supply).

2. The landlord (the one to whom we pay for the apartment) is obliged:

• participate in the decent maintenance and repair of the common property of an apartment building;
• carry out major renovations to residential premises.

If the landlord does not fulfill these obligations or performs them improperly, then the Tenant has the right, at his own discretion, to demand:

• reduce rent (corresponding utility bills);
• reimburse your expenses for repairing common property in an apartment building and eliminating deficiencies in residential premises;
• compensate for losses incurred due to improper performance or failure by the lessor to fulfill its obligations.

Thus, replacement of risers in a municipal apartment, as well as in the premises of an apartment building, should be carried out by the management organization at no additional cost.

Pipes need to be dealt with separately. Everything that goes from the riser to the first shut-off valve is the common property of the management organization. If there is no shut-off device up to the mixer, then this area is also common property. Everything after the valve is repaired by the employer at his own expense.

One more point: if the house is not the property of the housing department, then repairs to the common property are paid for by all residents.

Replacing riser pipes in an apartment

The risers of hot and cold water supply, heating and sewerage can be replaced. The work will look like this step by step:

1. Dismantling old risers.

2. Installation of new heating, sewer or hot water pipes.

3. Connection to wiring, control over operation.

Let's look separately at the systems of how risers are replaced in an apartment building.

Replacing the heating riser

Ideally, the entire span should be replaced. Neighbors should also take up repair work. In practice it turns out differently. Perhaps the neighbors have already replaced the riser and pipes of the heating system. Either they don’t need it, and so everything is fine. We act on the spot, depending on the current situation.

Stages of replacing a heating riser:

1. Shut off the system and drain the water from it (this can only be done through the housing department). If replacing the heating riser is not a necessity, but only a whim of the owner, then all work will be paid.

2. Using a grinder, cut out the old pipes and carefully pull them out of the floor slabs.

3. Mark the area where the new heating radiators will be located.

4. Place the battery level and screw it in using a hammer drill.

5. After installing the battery, the pipes are connected. The top and bottom of the radiator should go to its neighbors.

6. Install the jumper and run water into the riser.

A jumper will help block a certain section of the system in case of a leak. The rest of the network will continue to operate.

Replacement of water supply risers

As a rule, cast iron pipes are replaced with polypropylene ones. And this replacement is justified. Advantages of the new material:

• Corrosion resistant;
• has ideal smoothness of the inner surface, due to which limescale does not accumulate;
• characterized by high strength and environmental safety.

If hot water supply pipes are to be changed, then you need to look for options that are resistant to high temperatures.

Preparatory work:

• drawing up a diagram showing the wiring to the bathroom, toilet and kitchen;
• counting and purchasing materials.

Stages of work:

1. Settlement of all issues with the management organization and neighbors.

2. Dismantling the old water supply system.

3. Marking areas for clips, which are used to fasten pipes to the wall at the distribution points.

4. Cutting new pipes. Cleaning adhesion sites, treating them with alcohol.

5. Preparing the welding machine. A Teflon nozzle is used for welding polypropylene. The required temperature is two hundred and fifty degrees.

6. The pipe and fitting are simultaneously put on the heated apparatus. They are scrolled to the full depth of the nozzles.

7. When the elements heat up, they need to be removed and connected.

Even before the pipe and fitting are heated, marks must be made on these parts. To what point will the connection be made?

8. To solder your own riser to your neighbor’s, a special coupling is used. If your neighbors have metal pipes, then use an adapter coupling.

Using soldering, the entire system is assembled, the water is connected and the leaks are checked.

Replacement of sewer risers

It’s better not to deal with sewer risers yourself at all. This pipe is large and heavy. If it suddenly falls down, it will break the neighbor's or basement system. An emergency situation will arise that will have to be resolved at your own expense. Therefore, it is best to go to the management organization and get the sewer riser replaced.

Schematically, the work of plumbers can be represented as follows:

1. Dismantling the old system. They punch holes in the ceilings and pull out the pipe.

2. Installation of a new riser. They start from the bottom. One pipe is inserted into another using a rubber ring.

3. The top point of the pipe, as a rule, goes into the attic, or goes into the sewer riser.

If the neighbors above do not change the riser, then the new pipe is simply inserted into their old one.

stroy-king.ru

At whose expense should the heating radiators in the apartment be replaced?

We find out the causes of the accident. The heating system of the apartment consists of:

• a riser that runs through the toilet;
• supply pipes (return);
• connections between pipes;
• batteries

No one is safe from these pipes bursting. This happens often and there can be several causes of accidents:

old equipment that has become unusable due to a long service life; careless use of batteries; incorrectly installed heating pipes; pipes may burst during a scheduled inspection by the services of the management company, as described above.

How to behave, where to contact If an accident does occur, then you immediately need to call the housing office and report the break. If the accident occurred at night, you need to notify the emergency services. The telephone numbers of these organizations should always be at hand.

Removal and replacement of emergency radiator. at whose expense

For example, faulty plumbing. However, repairs to these devices can only be carried out by a company specialist with the consent of the housing office. If the owner changes the plumbing himself, then if the neighbors below flood, all responsibility will most likely fall solely on him. The management company must repair and conduct routine inspections of the heating system in apartments at least 2 times a year.

After the inspection, a report with the results is issued. If the owners do not allow a specialist into the premises, then this amounts to improper use of communications.

Replacing heating batteries in an apartment.

One of the rarest types of repair work in an apartment building is replacing a heating battery. The service life of heating devices is from 15 to 40 years. Management companies that have taken over the functions of housing offices are required to carry out measures to change heating equipment as part of the capital repair program. If desired, apartment owners can change heating batteries unscheduled, but this service is provided on a paid basis.

Which is better to choose a heating riser for an apartment building: purpose and installation of the device

Unfortunately, in multi-storey buildings of old buildings there are still heating systems installed at the time of their commissioning.

With each new heating season, residents of such houses risk that the heating riser in the apartment will either leak or completely burst.

As sad statistics indicate, such accidents occur mainly at the height of the heating season.

The most logical question that arises in this case is the heating risers in an apartment building - whose property is it, and who should change them?

Replacing the heating riser, whose concern is it?

According to the law, planned replacement of elements of the heating system in apartment buildings must be carried out every 25-30 years at the expense of the management organization, since they are part of the general building communications. When their breakdown occurs before the specified period, then replacing the heating riser in the apartment is the responsibility of the housing and communal services, since all residents pay monthly rent, part of which is aimed at maintaining all utilities of the building.

When residents decide to update outdated risers and heating radiators in their apartment on their own, they will have to do it at their own expense. The same applies to the repair of such a heating system if it breaks down during operation or was initially installed incorrectly.

Replacing heating risers in a municipal building apartment must be done at the expense of the city. In the event that the system breaks down, it is enough to submit an application to the district municipal council, which they, in turn, forward to the management company.

When an apartment is privatized along with all communications included in it, then residents carry out any replacements or repairs of heating risers at their own expense.

Purpose of the device

As the long-term practice of equipping high-rise buildings with heating systems has shown, wiring using risers is an outdated and extremely inconvenient scheme that is practically no longer used. But since there are many buildings with such a system, utility workers have only one choice - to repair them or replace them completely when the service life of the heating risers in an apartment building has expired.

As a rule, the service life of heating system elements directly depends on the quality of their connections, the diameter of the pipes and the material from which they are made.

To replace a riser in an apartment, you need to have a good understanding of its purpose in the general communications system of the building:

1. Firstly, they participate in the distribution of coolant throughout the system. One entrance of a multi-storey building can have up to 8 risers, while in each individual apartment there are up to 4 of them.
2. Secondly, the “duties” of the risers include delivering hot water to each heating system, while simultaneously transporting cooled water back to the boilers. If the system is two-pipe, then there are, respectively, two elements that perform this work.
3. Thirdly, risers regulate hydraulic loads, distributing them evenly throughout the system.

Having an idea of ​​why risers are needed in a centralized heating system, when replacing batteries and pipes in an apartment, it is important to take into account that the new elements are compatible with the old ones. If they do not fit together, this can either lead to serious problems in the general heating structure of the house, or cause an accident in the apartment itself.

Heating risers in an apartment building: which one to choose?

As a rule, most multi-apartment buildings are equipped with steel risers. They have their positive qualities, but still, after several decades, they have to be changed, as they “harmoniously” fail one after another. This means they have reached the end of their useful life and require an update to the entire system.

Difficulties often arise in this case, since modern materials are fundamentally different from those that were installed on heating systems 30-40 years ago. Therefore, it is necessary to correlate their parameters with those of old risers. This is especially true for those residents who decided not to wait for emergency situations, but to take the safety and quality of heating in their apartments into their own hands.

The equipment must meet the following criteria:

1. The first of them is the temperature of the heating riser in an apartment building. This means that new pipes must withstand the same heating of the coolant as the previous ones or even exceed them.
2. An equally important indicator is the pressure in the system. Depending on the number of storeys of the building, it can range from 3-8 atm. In addition to constant pressure in a working system, there are also so-called water hammers that occur during its startup. Find out from the heat suppliers what operating pressure in the system, you need to add 30-35% to this indicator and purchase pipes that can withstand it.
3. In the event that some part of the riser passes through a non-residential, unheated room, then it will need to be thermally insulated.

As practice shows, today most consumers choose polypropylene pipes. The best choice for such an important part of the heating system is the PN25 model, which is characterized by increased strength, but provided that the upper temperature of the coolant does not exceed +90 degrees. If this is not the case, then you will have to install the usual steel pipes again.

Sometimes those who want to extend the “life” of the heating system in their apartment install metal-plastic risers, not knowing that they are extremely vulnerable at the joints. This is caused by pressure changes, which these pipes do not tolerate very well.

Preliminary actions

Even before all the necessary equipment, pipes and elements for them are purchased, it is necessary to legalize the change of the riser in the apartment, if it is not planned.

To do this you need:

1. Submit an application for replacement of heating pipes to the housing office long before the start of the heating season (be sure to indicate why replacement is required).
2. Then the application will “migrate” to the organization of the heating network.
3. An employee of the management company is obliged to come and check the validity of the request to replace the riser. If it is caused by an emergency condition of the pipes, then all costs for dismantling the old system and installing a new one are borne by the organization. In the event that residents decide to replace old risers with new ones in order to reduce heat loss (this reason is considered valid), then all work is paid for by the owner of the property.
4. It is necessary to collect the signatures of neighbors who agree to such work, present them to the management company, and only after all permits have been received, begin to dismantle the old pipes.

If the heating risers in an apartment building are in emergency condition, then there is no need to collect signatures, since such a situation requires urgent intervention and repair.
As a rule, there are no prohibitions on unauthorized replacement of pipes in critical condition. Therefore, if the management delays the start of work, then in order to protect property, you can begin to dismantle and install new risers without permits, but only during the non-heating period.

Installation of the device

Before installing a new riser, it is necessary to drain the coolant and disconnect the liner, and in this case it is better to have good relations with the neighbors. Experience shows that the most vulnerable spot in a heating system is the ceiling, where the pipes come into contact with the concrete. If it is not possible to connect the riser from your neighbors’ apartment, you will have to cut it off in your own.

Depending on the material from which it is made, connection to the system can be made in different ways, but the most reliable and most often used is welding. For a single-pipe circuit, it is necessary to install a bypass to connect the inlet and outlet pipes of the radiator. In order to avoid creating a zone of low pressure in the system, the bypass must be one size smaller than the diameter of the riser.

During the installation of the heating system, before handing over the house, the interfloor laying of the riser is carried out using special sleeves, which should provide sound insulation. As a rule, the distance between the riser and the sleeve, which was initially filled with some kind of soundproofing material, diverges over time and through the heating riser you can hear what is happening in the apartment above or below.

To avoid such problems, soundproofing of heating risers in an apartment must be carried out without fail when replacing them.

It should also be taken into account that in order to distribute heat evenly throughout all rooms, balancing the heating risers of an apartment building will be required. For this purpose, in older buildings a balancing valve is used.

It makes no sense to install it specifically if in a high-rise building the distribution of coolant is carried out efficiently due to, for example, the correctly selected pipe diameter.

In any case, it is better to entrust the replacement and inspection of heating risers to specialists, since in the event of an emergency due to unauthorized actions, all the burdens, both financial and production, will fall on the shoulders of the violator.

To summarize, we can draw the following conclusions:

1. Any work with communication systems belonging to the housing office or another organization, even if they are located inside the apartment, is not acceptable without prior agreement with them. Even simply draining water without warning the heating network service is considered a violation. Subsequent “flirts” with employees of these services will not lead to anything good.
2. When choosing risers from new materials, you must first check the technical indicators of the old system and purchase those that are compatible with them.
3. It is better to entrust the replacement of heating risers to professionals, since in the event of an accident when carrying out independent work, the client is always in the wrong.
4. Residents do not have to pay to replace pipes if they have reached the end of their useful life or are in critical condition.

Otherwise, changing the riser is a simple job that, with the right skill, can be done within a day.

netholodu.com

Individual heating in residential buildings

In addition to central heating, you can find autonomous heating of an apartment in an apartment building; usually such a heat supply is rare and has been installed in new buildings in recent years. Local heat supply systems are also used in the private residential sector. For individual heating in an apartment building, the boiler room is usually located either in the building itself in a separate room or close to the house, since it is necessary to regulate the temperature of the coolant in the heating system.

The cost of autonomous heating in an apartment building is quite high, so it is preferable to commission one powerful boiler house that can provide heat and hot water to a residential neighborhood.

Heating system diagram - “Leningradka”

Heating systems of multi-apartment residential buildings are most often built according to a single-pipe scheme - the so-called “Leningradka”. Heating devices in this scheme are installed in series, with a bypass mounted next to them. However, the installation of a ball valve is not approved by management companies.

Through the bypass, part of the coolant bypasses the radiator and enters the next device in the group. This allows you to partially equalize the temperatures of the radiators, because a series connection entails a decrease in the temperature at each subsequent radiator (convector) in the series.

The main supply and return pipelines run horizontally in the basement or on the upper technical floor. From them, vertical heating risers pass through the apartments, and radiators are connected to them in the apartments. Each riser has its own shut-off valve for disconnection.

At whose expense is it possible to replace heating pipes in case of an accident?

The battery burst, the neighbors were flooded - who is to blame? What to do when the heating has become unusable and the neighbors have suffered? Where to find the culprits? First you need to find out whose fault the accident occurred. Who is to blame: the owner of the apartment or the management company that monitors the condition of the heating pipes of the entire house. If the heating breakthrough occurred due to the fault of the owner, then he will compensate for the damage to the neighbors flooded from below.

If it is the fault of the management company, then all expenses for repairing the premises will be borne by it. The Housing Code imposes obligations on the apartment owner to keep the property in good condition and monitor the pipes. If necessary, he must make repairs. If the pipes are in poor condition, you need to contact the housing office and call a specialist. The invitation of a specialist must be officially formalized. It is necessary to fill out a request, which will be registered and a repair time will be set.

Let's figure out how to find an approach to neighbors and resolve the issue from the legal side:

1. Discuss the issue of replacing risers in advance at a meeting of residents

Record all owner votes on paper. If more than 2/3 of all residents in the house agree to replace the riser, then further actions of the “war” with the neighbors will end in your favor.

2. Go around on your own to all the owners of housing located above or below your apartment. Try to convince them to replace the old pipes, explain why you decided to change them.

Example: the Nekiforovs’ neighbors recently made repairs and changed all their heating pipes. During the heating season, those living in apartments located on the floors above noticed that the heat did not “reach” them. We decided to change the riser. But the Nekiforovs refused because they had some repairs done. Long persuasion and requests led to nothing. Then the residents decided to use a trick - they suggested that the Nekiforovs, on the day of replacing the riser, show the foreman their replaced pipes so that he would approve them. When the crew chief checked the neighbors' pipes, he decided to select new pipes of the same size so that the heat would be distributed throughout the riser and reach all apartments.

3. Contact the Management Company

Of course, the management company cannot oblige the owner to install a new riser, but a company specialist can persuade him to organize access to the pipe on a certain day.

4. Talk to the local police officer in your area

Again, he can only influence the homeowner through conversation. He can tell you what laws exist regarding this issue, what rights he will violate if he does not allow the repairman into the apartment and does not organize access to the riser.

Here are the main articles that you can refer to:

1. Part 3 of Article 17 of the Constitution of the Russian Federation. The owner can dispose of his property as he wants, but these actions must not violate the rights and interests of other citizens. In this case, the rights and interests of neighbors who want to change the riser for better living conditions are violated.
2. Clauses 10-12 of the Rules for the maintenance of common property in an apartment building. According to them, homeowners must monitor the repair of all communications and general equipment and restore them as necessary. Therefore, if your neighbors refuse to replace the risers, they are violating these rules and requirements, which are also confirmed by Articles 30, 39,156 of the Housing Code of the Russian Federation.
3. Article 44, 46 of the RF Housing Code. Replacing a riser is a major overhaul, a decision on which must be made taking into account every vote of the owner of a part of an apartment building. If 2/3 of the votes of the total number of residents are collected in favor of the repair, then the decision is positive. If the same part is against replacing the risers, then it is negative.

5. Resolve the issue in court

If you fail to reach an agreement with your neighbors, you will have to go to court. No one will promise you that the process will go quickly, but on the other hand, you will have a decision in your hands.

The judge, relying on the legislative framework, will explain to your neighbor-owner that he is violating the rights of the owners of the neighboring home, and will oblige him to organize access to the riser for repair service specialists in accordance with all the rules and requirements, or will force him to carry out repair work on the riser independently and at his own expense.

Please note that you can enter someone else’s apartment by introducing yourself as a postman or other employee, but such actions will be illegal and will not lead to the result (replacing the riser), they will only turn the neighbors against you. Therefore, it is better to resolve the issue legally, defending your rights.

6. On the day of repair, ask the bailiffs to come to the site and monitor the execution of the court decision

Of course, the bailiffs will know about their work, but it is in your interests to have them come to you and help control your harmful neighbors.

Replacing batteries via UC

At the time of an accident (for example, a radiator has leaked), replacing the heating battery lies entirely within the responsibility of the organization, to whose account residents transfer money for maintaining common property and carrying out major repairs. It cannot be said that such a replacement occurs free of charge. Cases of coercion to purchase new devices are not uncommon. It happens that receipts are issued for the cost of work performed.

IMPORTANT! Residents of apartment buildings, regardless of the type of property, do not have to pay anything additional for emergency work. The most unpleasant thing is if the battery replacement process is needed in emergency mode during the heating season

And representatives of the management company will begin to evade their obligations, citing the fact that they have neither time, nor workers, or even the radiators themselves. They will remove the old one, install plugs and politely ask you to wait. Moreover, there is no statutory deadline for replacing faulty radiators. In such a situation, it is important to eliminate the cause of the accident. Therefore, in order not to wait for anything, you need to act

The most unpleasant thing is if the battery replacement process is needed in emergency mode during the heating season. And representatives of the management company will begin to evade their obligations, citing the fact that they have neither time, nor workers, or even the radiators themselves. They will remove the old one, install plugs and politely ask you to wait. Moreover, there is no statutory deadline for replacing faulty radiators.

In such a situation, it is important to eliminate the cause of the accident. Therefore, in order not to wait for anything, you need to act

Actions are recorded in writing. All complaints, statements, acts, any other documents accompanying the process must be in 2 copies. First, a contractor is called to draw up a report. Further, the claim, together with the act, is referred to the Criminal Code. The claim must refer to 491 Decree of the Government of the Russian Federation. The 2nd copy must contain the date and signature of the management company employee who accepted the application. This may also take some time. In case of refusal, the Housing Inspectorate, when contacting them, will take control of the situation and the issue will be resolved. We previously wrote about who to complain to about the management company.

When do you need to change pipes?

The need to replace pipes may be due to several reasons:

• Wear and tear of the existing heating system. This is especially true for metal pipeline systems, which are inevitably subject to corrosion and deposits during operation. These factors only get worse over the years and can greatly worsen the efficiency of the heating system.
• Carrying out a major overhaul, the design project of which includes the installation of modern aesthetic heating elements.
• The presence of strong noise and excess air in the system.

Note! If the work is not emergency, it would be better to schedule it after the end of the heating season. This will help speed up and simplify the implementation of the project without causing inconvenience to neighbors.

Selecting the type of radiators

Among several factors influencing the lifespan of radiators, the main one is the material of manufacture. The most durable is cast iron, which was used to a greater extent in Soviet buildings. Such batteries require replacement in most cases, as their service life is coming to an end. But this factor is not the only one. Conditions of use also affect service life:

• Working pressure of the coolant.
• Chemical composition inside the unit.
• Water temperature.
• Possible water hammer.

It is believed that the best time for such work is summer or early autumn. That is, until the heating season is actually open. At this time, management companies carry out preventive work on the heating systems of all apartment buildings. Therefore, it is easier to obtain permission to carry out work.

Selection of materials

To choose the right material for replacing pipes, you should definitely take into account a number of important parameters:

• Average and maximum media temperature.
• Pressure and workload indicators.
• Desired service life of the heating system. In most cases, everything is clear here - the longer the system lasts, the better. And yet, if, for example, the house will be demolished in the next few years, and the heating system needs urgent repairs, it would be better to choose not very expensive products with a shorter service life.
• Maximum permissible load.

When choosing pipe materials, each of which has its own disadvantages and advantages, it is important to take into account their characteristics:

• Hardware. It can be stainless steel, steel, copper, ordinary iron or galvanized. Unprotected metals are susceptible to corrosion, while stainless steel or galvanization can be used for decades without the slightest loss of their qualities.
• Polypropylene and polyvinyl chloride. Excellent heat transfer, flexibility and strength of materials make heating systems built on their basis extremely efficient. They can easily withstand temperatures up to 95°C and pressures up to 20 atmospheres. The manufacturer's warranty can be up to 50 years.
• Metal-plastic. A relatively inexpensive material, perfect for installing heating systems. Works with temperatures up to 95°C, has good flexibility and reliability. The thin thickness of the pipeline makes it more vulnerable to mechanical damage.

We recommend that you read: Hydrodynamic flushing of the sewerage system - cleaning pipes from various types of blockages

Classification of central heating systems

The variety of central heating organization schemes that exist today makes it possible to rank them according to certain classification criteria.

By thermal energy consumption mode

• seasonal. provision of heat is required only during the cold season;
• year-round. requiring constant heat supply.

By type of coolant used

• water - this is the most common heating option used to heat an apartment building; such systems are easy to operate, allow you to transport coolant over long distances without deteriorating quality indicators and regulate the temperature at a centralized level, and are also characterized by good sanitary and hygienic qualities.
• air - these systems allow not only heating, but also ventilation of buildings; however, due to the high cost, such a scheme is not widely used;

Figure 2 – Air circuit for heating and ventilation of buildings

steam - considered the most economical, because small-diameter pipes are used to heat the house, and the hydrostatic pressure in the system is low, which makes it easier to operate. But such a heat supply scheme is recommended for those objects that, in addition to heat, also require water vapor (mainly industrial enterprises).

According to the method of connecting the heating system to the heat supply

independent. in which the coolant (water or steam) circulating through the heating networks heats the coolant (water) supplied to the heating system in the heat exchanger;

Figure 3 – Independent central heating system

dependent. in which the coolant heated in the heat generator is supplied directly to heat consumers via networks (see Figure 1).

According to the method of connection to the hot water supply system

open. hot water is taken directly from the heating network;

Figure 4 – Open heating system

closed. in such systems, water is drawn from a public water supply, and its heating is carried out in the central network heat exchanger.

Figure 5 – Closed central heating system

At whose expense is it possible to replace the heating battery in the apartment through the housing office?

Housing Code of the Russian Federation), this means that all work on the riser is paid for jointly by all owners of premises in the house. Owners of privatized apartments bear the burden of personal expenses only for intra-apartment piping

Since all homeowners pay for the common property, we once again focus on who should change the risers in a privatized apartment, and who pays for the replacement of risers: the management company does the replacement, all residents pay, transferring money to it monthly

How to protect your rights As planned, the replacement of heating risers in an apartment is carried out in the spring and summer, but emergency situations can arise at any time of the year. Therefore, without delay, call the emergency team, and then take the application to the housing department to replace the riser.

Rules for carrying out work on replacing heating risers

If you plan to change the riser from the valve, then you will not need any permits.
In this case, it is allowed to replace the heating risers in the apartment with your own hands. If you have to change the valve itself, then permission from the Housing Office is required, which is issued on a paid basis. The most optimal solution when performing the above work is a one-time replacement of the heating riser with polypropylene on all floors at once (the entire span). But, in most cases, this wish cannot be realized. For some neighbors, the work is too expensive, others have already changed everything in their apartment, and others are quite satisfied with the condition that exists at the time you start the renovation work.

According to the existing rules for performing work, they must be carried out in the following sequence:

• The system is shut off and water is drained from it. This work must be performed by a housing mechanic. If the work is emergency, the riser will be closed free of charge. In all other cases, you will have to pay a state fee.
• A grinder is used to cut out old riser pipes in an apartment. In this case, the technology of subsequent work should be taken into account.
• If the riser is changed along the entire span, then the pipes are cut in such a way that they can be conveniently removed from the ceiling;
• The installation locations for new heating devices are being outlined.
• Radiators are installed in place and leveled. Otherwise, air will accumulate in them.
• After installation, pipes are connected to the radiator, going, respectively, to the upper and lower neighbors.
• A jumper is installed to block the area in the event of a leak.
• The riser starts.

When neighbors have prohibited them from performing any joining work, the pipes should be cut in such a way that the remaining part can be threaded (at least 6 turns) and a transition coupling can be installed.

If your neighbors have a metal riser and they allow you to connect to them, then it’s better to cut in right here, it’s easier to get through the ceiling.

If your neighbor has a riser made of plastic pipes, in this case you should also choose plastic pipes of the same diameter and connect to the neighbor through a special coupling. If you are planning a metal riser, then you will have to make a threaded fitting, fixing the position of the riser in the neighbor’s apartment. Otherwise, you can turn its riser and you will have to make repairs on it too.

Scheme for replacing risers in a house or apartment

Replacing a cast-iron riser with a plastic one in a private house technically differs from similar work in an apartment only in that in the first case there is no possibility of obtaining a bunch of approvals and permits. Therefore, we consider this issue using the example of work in an apartment.