Distance between storm sewer manholes. Distance between sewer wells and other normalized requirements

When planning the construction of external sewerage, the requirements that are determined by SNiP should be observed. In particular, the correct distance from the building to the sewer well must be maintained. The necessary information can be searched for a very long time, given the volume of regulatory documentation and the difficulty of reading it for an ordinary person. To simplify the search and save time, below are only the data that you should rely on when choosing a location for placing sewer facilities in a private area.

The choice of the optimal location depends not only on the nature of the internal buildings, but also on the type of sewer facility. It is especially important to correctly locate the facilities intended for wastewater treatment, which can be conditionally divided into accumulative (with a sealed bottom) and filtration (without a bottom).

The position of sewer facilities on the site is regulated by SNiP

Cumulative

The minimum distance from the house to the storage type sewer well is 3 m. This is the necessary distance at which the construction of a treatment plant will not have a devastating effect on the foundation of the building. In this case, the maximum distance to the first well should not exceed 12 m. A more remote location can lead to frequent blockages and complicate the maintenance of the pipeline.

When choosing a place for the location of a treatment plant, one should also take into account its volume. If the capacity does not exceed 1 m³, then the object can be placed at the minimum possible distance from the house. With an increase in volume, it is desirable to proportionally increase the distance.

The location of storage septic tanks relative to a residential building

As for the roadway and the neighboring fence, in this case the same requirements are imposed as for a residential building - a distance of at least 3 m. But the location relative to outbuildings has not so strict criteria. The main thing here is to maintain a distance of 1 m.

Filtration

If the sewage treatment plant does not provide for a sealed bottom, that is, the effluents after preliminary filtration are discharged into the ground, then the distance between the sewer well and the building must be increased to 10-12 m. This arrangement will not allow to provoke the destruction of the foundation from high soil moisture.

In the case of domestic wastewater treatment, in addition to protecting the foundations of buildings, sanitary standards should be followed. To prevent contamination of the drinking water source, the filtration well is located 50 m from it. The minimum possible distance to the nearest reservoir is 30 m.

The layout of the point of wastewater discharge into the ground

Distance between sewer wells

In addition to storage and filtration structures, there are other types of wells that are used for installation and maintenance of external sewage. Among them:

• viewing;
• rotary;
• differential.

Since such devices are not designed to accumulate wastewater, they do not pose a danger to the foundations of buildings and natural objects. In this case, these structures must be correctly positioned relative to each other.

Lookouts

Such designs are intended for the revision and maintenance of sewers. They are used in complex outdoor networks with a large length of the pipeline. According to SNiP, the distance between manholes depends on the size of the pipe. There are the following standards:

• Ø110 mm - 15 m;
• Ø150 mm - 35 m;
• Ø200-450 mm - 50 m;
• Ø500-600 mm - 75 m.

In domestic systems, pipes with a diameter of more than 150 mm are rarely used. Usually, a diameter of 100-110 mm is sufficient for arranging external sewage. Accordingly, in this case, it is necessary to mount an observation structure every 15 m. Although for straight sections it is allowed to increase the interval by several meters.

Swivel

Rotary devices perform the same function as viewing devices. The distance between them is not regulated, since they are located in strictly allotted places - on the bend of the pipeline, the angle of which exceeds 45 °. These points are most prone to blockages, therefore, in these places it is necessary to have access for cleaning activities.

The distance between the turning wells of domestic and storm sewers depends on the design of the network. However, if there is a long straight line segment between the turns, a viewing point is additionally set at this interval.

Large pipeline bends should be equipped with swivel structures

Variable

If it is necessary to install a sewer network on a slope, drop structures are used. Such wells are designed to normalize the flow rate of the liquid, since too much movement of drains can lead to blockages.

The distance between such structures depends on the specifics of the relief and is individual for each area. In this case, some technical nuances should be taken into account:

• the height of the drop should not be more than 3 m;
• to reduce the flow rate, damping baffles can be additionally installed;
• with a drop of less than 0.5 m and a pipeline diameter of 600 mm, it is allowed to replace the drop well with a viewing structure with a drain.

Slope sewer installation scheme

If the correct distances between sewerage wells and other objects are observed in accordance with SNiP, you will not have problems with either supervisory authorities or neighbors. At the same time, it is better to plan a complex system together with specialists in order to prevent technical errors and inconsistencies that can lead to unpleasant consequences.

With the independent construction of local sewage, it is very important to comply with all the requirements of SNiP. Only in this case, the installed networks will function effectively and will not threaten to disturb the ecological balance of the area. Important design points are the distance from the house to the sewer well, as well as the length of the zone separating the place where drinking water is received from the sewer installation.

Any construction must be carried out taking into account the requirements of SNiP. The standards present the basic requirements for the choice of building materials, as well as for the placement of objects on the ground. In particular, it is important to maintain the recommended distance from the sewer well to the well with water intended for drinking, as well as correctly locate sewer installations relative to buildings, plantings, roads.

Local sewer systems

The construction of a local sewage disposal system is practically the only acceptable solution to the problem of improving private households and other suburban facilities.

In order for such a local sewage system to function effectively, it is important to take into account all the requirements of building rules and regulations during its construction. When designing a drainage system, the following points should be considered:

• terrain in the building area;
• soil characteristics at the construction site;

• location near the construction site of drinking water sources and sanitary zones;
• the presence of buildings and other communications already existing on the site.

The main difficulty in constructing a sewerage system is the construction of a facility for receiving and disposing of wastewater. Such a building can be represented:

• storage tanks - sealed containers for accumulating liquids, which will need to be pumped out as they fill up with the help of special equipment - sewage trucks;
• settling tanks are ordinary septic tanks in which wastewater is cleaned by settling. Final cleaning occurs when the liquid is filtered through a soil filter;
• deep biotreatment stations - modern installations that provide a full cycle of wastewater treatment.

Wells must be included in any local drainage system. These can be ready-made plastic structures or makeshift structures.

Kinds

The number of wells in sewer pipeline networks depends on their length and complexity. The simpler the scheme used, the fewer wells will be required. Let's figure out what types of sewer shafts exist and what should be the distance between network elements and other objects on the site.

Observation (revision)

The name of this type of well speaks for itself. The purpose of the inspection shafts is to provide an opportunity to revise the work and, if necessary, to clean it. Installation of revision shafts is necessary:

• when building extended networks;
• when switching to a different pipe size;
• at branch points.

The maximum distance between sewer wells depends on the dimensions used for the installation of sewer pipes (provided that the pipeline runs in a straight line):

• when assembling a pipeline with a cross section of 100 mm, mines should be installed for inspections and for servicing networks every 15 meters;
• if 150 mm pipes are used, then the inspection shafts should be separated from each other by at least 30 meters;
• with 200-450 mm pipe size - the distance is increased to fifty meters;
• when building large-sized sewerage networks, it is necessary to plan the installation of revision shafts with an interval of 75 meters.

Advice! From the foregoing, it becomes clear that the larger the size of the pipeline, the more distance can separate the inspection shafts from each other.

Swivel

This variety is mounted where the straight line changes its direction. The purpose of such a mine and its design features are no different from revision ones.

The installation of shafts at the turning points is necessary for the reason that blockages often form in the corners, and the presence of the shaft allows cleaning and removing the blockage, restoring the operation of the system. The distance between the rotary shafts depends on the configuration of the networks, since they need to be installed at the turning points.

Variable

When building a local sewerage system on a site with a difficult terrain, one cannot do without the use of differential revision shafts. This type of wells has to be installed in areas with difficult terrain, since it is necessary to lay a pipeline, maintaining the optimal slope of the pipes.

To compensate for differences in the depth of laying in difficult areas, a differential well is installed. The distances between these network elements depend on the complexity of the terrain and the configuration of the pipeline. Additional conditions for the installation of drop wells:

• the height of the depth difference should not exceed three meters;
• if the drop height is small (up to 0.5 meters), then instead of a drop well, you can install an inspection shaft with a drain.

Accumulators and settling tanks

The storage well is the final element of the system. But more often, when building a local sewage system, they use a sump instead of storage tanks. In this case, several wells are built at a distance of 1.5 meters from each other. The last well is made filtering (without a bottom), crushed stone is poured into it with a layer of about 0.5 meters.

When choosing the location of the filter well, it is very important to maintain the optimal distances from this object to other buildings on the site.

Rules for installing filter wells

Let's figure out how to choose the right place to install a filter well relative to other objects on the site.

drinking well

The distance from a well with drinking water or a well is most strictly regulated. Too close placement of two installations threatens with ecological catastrophe. Contaminants that have entered aquifers can make water undrinkable, and this already threatens the health of people living in the area.

It is important to install, in compliance with the requirements of SNiP, not only filter wells, but also sealed storage tanks. It may seem that this precaution is unnecessary, since the effluent in the sealed reservoir does not come into contact with the ground and cannot cause pollution.

However, it is impossible to exclude the occurrence of an emergency situation associated with depressurization of the drive. In this case, dirty water can get not only into the ground, but also into aquifers.

Leakage of contaminated fluid can also occur if the installation is not carried out correctly, for example, if the pipe joints are not properly sealed. The minimum distance between the water intake and the sewer installation depends on the characteristics of the soil, and more precisely on its ability to pass water.

If the soil is predominantly clay, then the minimum distance will be 430 meters. With good soil permeability, the distance will have to be increased to 60-80 meters.

Advice! To determine the qualitative characteristics of the soil, to identify the presence of filter sites, geological research will be required.

When planning the laying of engineering networks, it is important to correctly position the sewer and water pipes. The minimum distance between the water supply pipeline and the drainage pipeline is 10 meters. In this case, the water supply pipes should be located higher in level than the sewer pipes.

House

When building sewer networks, it is very important to properly position the wells relative to the residential building. The treatment plant itself cannot be located close to the house for the following reasons:

• the risk of spreading unpleasant odors;
• the danger of washing away the foundations of buildings with water filtering into the soil;
• basement flooding.

The minimum distance from the filter unit to the foundation of the building is 6 meters. But in practice, it is desirable to carry the treatment plant to 10-15 meters. This placement of the septic tank will provide maximum comfort.

Advice! It is important to install a sewer installation at a distance not only from your home, but also from houses in neighboring areas. The minimum distance separating the septic tank from the house on the neighboring site should be more than 10 meters.

It is extremely important to correctly position sewer wells when building a local sewerage system. Here are some recommendations:

• when choosing a location for filtering sewer installations, it is necessary not only to correctly maintain the distance between the installation, residential buildings and the well, but also not to forget that sedimentation tanks or storage tanks need periodic cleaning. Therefore, it is necessary to provide for the availability of free passage to the storage plant or sump;
• filtering installations should not be located near buildings. And not only to residential buildings, but also to other buildings on the site - a garage, premises for keeping animals, a bathhouse, etc. The distance of utility and utility buildings should be at least one meter;
• should not be placed in the immediate vicinity of the garden and other plantings of installations with water filtration. The root system of plants can be damaged due to high humidity. Therefore, you need to plant trees at a distance of at least four meters. The distance to the bushes should be at least a meter;
• the distance between the filtering unit and the border with the neighboring area must be at least two meters, and with the road - at least five meters.

Failure to comply with the rules for the placement of sewer wells can cause serious problems. The owners of the site may have claims from the SES. If during the inspection it is revealed that the sewer networks were built in violation of the requirements of SNiP, then the owners will be issued an order to eliminate the violations. That is, you will have to completely redo all the work: dismantle the assembled networks and assemble them again, but taking into account sanitary and construction requirements.

So, it is very important to correctly maintain the distance between the sewer wells according to SNiP. Failure to comply with the regulations will lead to a decrease in the efficiency of the wastewater system or to an environmental threat.

So, if the distance between the inspection shafts is greater than required, then it will be extremely difficult to maintain the pipeline in the event of a blockage. Even more serious consequences can be expected by the owners if the norms of distances between the filtering sewer well and the place where drinking water is taken are not observed.

The independence of your own home in providing water and disposing of waste is a priority for every owner. But during the construction of these structures, it is important to know how many meters will be the minimum distance from the well to the well when constructing an artesian working and a septic tank, so as not to create an environmental problem on the site and one's own health.

When starting the construction of water supply and sewerage structures for your home, you need to familiarize yourself with the technical conditions and SNiP. The successful implementation of the project depends on the quality of the preparatory work, which includes:

1) Drawing up a plan of the site with the exact parameters of the buildings and indicating the distance between the objects, the fence of the site and the buildings.

2) Determination of a place for the construction of a drinking source:

• the distance from the drinking well to the sewerage system should not be less than the standard (20 m);
• when choosing a location for a water source, the quality of the aquifer is taken into account, which is studied by preliminary drilling of a well.

3) Determination of a place for a local treatment plant.

We focus on the standard 5-7 m from the house. This interval was adopted based on the possible negative consequences:

• at a greater distance of the structure from the building, when it is necessary to maintain a minimum distance to the well, it is possible that the blockage is difficult to eliminate. If the interval is increased, it will be necessary to mount an additional viewing chamber;
• location closer than 5 m and possible depressurization of the septic tank - there is a possibility of undermining the foundation of the building and the penetration of smell from sewage into the room;
• in addition to the norm of the gap from the buildings, the entrance to the facility of a sewage truck is taken into account for the periodic pumping of accumulated effluents.

4) Determining the installation locations of the water and sewer chambers in the SNT:

• when connected to a water conduit, the remoteness of the manhole from the sewer must be at least 5 m. And the observation water chamber can be 3–5 m from the house;
• the gap from the drain chamber to the external conduit should be 3–5 m, so that in the event of a depressurization of the septic tank or pressure sewer pipe, toxic effluents do not enter the inspection shaft of the water main.

5) In addition to household, it is arranged to collect rainwater in a separate chamber. The space between the clean shaft and the pipes should be maintained similarly to domestic sewers.

When starting to build a house and other buildings on the site, you need to start with a source of water supply, since the rules for restricting construction to a sanitary zone will make it difficult to choose a place for a septic tank.

The SNiP standard states thatthe distance betweendrinkingwellsin neighboring areas at the same depth - at least 50 meters. Such a norm is due to the fact that, in case of possible contamination of one of the workings through the aquifer, infection is prevented in another. If the aquifers in the mines are in different horizons, the distance can be reduced to 30 meters.

SNiP and rules for the location of sources in SNT

The norms of SNiP for the territories of non-profit associations define the gap between the water conduit and the centralized sewerage system, which is 3–5 m.

1. Inspection cameras along the conduit route are installed at a distance of 50 m from each other, and the wells connecting the home network with the central one are placed 5 m from the house.
2. The maximum distance between sewer wells for inspection and elimination of blockages, equipped with plastic manholes with a pipe diameter of 200–450 mm, is limited to 50 m. The gap between the chamber connecting the network with the internal sewerage of the house and the building is set at least 5 m.

Between neighbors

The interval should be at least 20 meters, and the distance between adjacent water shafts located at the same depth should be 50 m. These parameters must be observed regardless of the location of the fence that delimits the territories.

From a mine with water and sewerage to a fence

It is regulated by a conditional restriction of the distance from the fence, which must be at least 2 m.

From the fence, the water source is arranged no closer than 5 meters for ease of maintenance. But this is provided that the neighbors behind the fence do not have objects to which the norms of SNiP apply.

Standard from sewer to sewer chamber

The distance between the sewer shafts during the installation of the collector depends on the diameter of the pipes and the topography of the soil. On a straight section with a pipe diameter of 100 mm, the distance between the viewing chambers is no more than 15 m.

With a pipe diameter of 150 mm, the interval between the chambers can be 35 meters. These standards ensure stable operation of the collector, preventing clogging. An increase in the volume of wastewater will require pipes of a larger diameter, and inspection shafts can be installed from each other up to 50 m.

From the well to the cesspool and toilet

And here the first disagreement lies in wait, in one source it is said from 5 m, in the other from 15 m to the cesspool.

From the toilet enough 8 m.

To the gas pipeline

According to clause 4.9 of SP 42-101-2003 “The distance from the gas pipeline to the outer walls of wells and chambers of other underground engineering networks should be taken at least 0.3 m (in the light) subject to the requirements for laying gas pipelines in cramped conditions in areas , where the clear distance from the gas pipeline to wells and chambers of other underground engineering networks is less than the standard distance for this communication.

From drinking to sewer

The SNiP and specifications provide for a 50-meter protective zone for the water source, in which the filtering capacity of the earth is sufficient to keep the water layer clean. But the minimum and the water shaft is limited to 20 m.

The location of the septic tank in the lower part of the terrain also insures against contamination of the aquifer in case of emergency depressurization of the waste disposal site.

When building a drinking source and a septic tank on the site, there should be no compromise to reduce the gap between objects.

From the foundation of the house and buildings

This SNiP is not regulated, but it is recommended during the construction of a well to take into account the influence of the aquifer on a shallow foundation. Water from a source located close to the building can undermine the foundation of the house and break the strength of the structure.

It is customary to remove the shaft from the building by 5–10 m for the convenience of delivering water, a room for livestock and poultry - at least 20 m, a bathhouse - from 12 m.

Up the road

From highways and areas with heavy traffic, it is required to place the source no closer than 30 m.

Penalties for violating regulations

The owner of the site, depending on the damage caused to nature, which led to the contamination of groundwater, may be punished:

• fined 80 thousand rubles;
• involved in correctional labor - up to 2 years;
• in case of consequences affecting people's health - imprisonment for up to 3 months.

In case of violation of the operation of treatment facilities that led to contamination of the aquifer with subsequent harm to human health, the perpetrator will be punished:

• in the form of a fine in the amount of 200 thousand rubles;
• damage to health requiring long-term rehabilitation - the term of imprisonment will be 2 years.

In order not to harm nature, family and neighbors, to protect yourself from punishment, equipping the site, you must follow the rules for placing objects.

Useful video
Expert reasoning:

How not to install:

Without being a specialist in the field of construction of engineering communications, it is very difficult to understand the regulatory literature governing the technology and procedure for such work. When you try to find information written in an accessible language on the network about the construction of a household sewer network for a country house, you often come across articles of slurred content.
Some of them have nothing to do with the search query at all. For example, a twine well is a master class that tells about making decorative crafts.
You have to spend a lot of time searching for the right information, literally break a lot of sites. To make this task easier for you, in this article we will briefly outline the standards adopted by building codes and regulations regarding the construction of structures for an external sewerage network.

Sewerage of a private house

Quite often, the owners of country houses decide to acquire autonomous water supply and sewerage systems. In one case - in order to save on utilities, the price of which is growing every year, in the other - due to the banal lack of centralized networks in the village.
In order for the external sewer network arranged by your own hands to work normally, so that if necessary you can eliminate the malfunctions and malfunctions that have arisen in it at any time, you need to build it in compliance with certain rules.
The scheme for the removal, treatment and removal of wastewater from the house depends on many factors, including:

• Topographic conditions of the site;
• Soil type;
• Availability of water supply sources on the site or in close proximity to it;
• Location of already existing underground utilities - water supply, gas pipeline, power cable, telephone line, etc.

The sewer network can be very simple and consist of one straight section of the pipeline connecting the intra-house network with a cesspool or septic tank (see), located at a small distance from the house. It can even be a well made of tires, in which effluents are filtered or accumulated until the next pumping out by a sludge pump.

Such a simple scheme is often used for summer cottages or small private houses. For its normal functioning, it is enough to withstand the required slope when laying the pipeline and pump out the well in time.
It is much more difficult to arrange sewage if the house is located on a site with difficult terrain, if, due to the presence of a well or a drinking well, it is necessary to comply with sanitary requirements for the location of septic tanks or storage tanks, arranging them at a considerable distance from the house.
Often, owners of country houses combine drains from several buildings located on the site into one network, include a drainage system and storm drains in it. In this case, a complex scheme is obtained from several pipelines extended along the length and several wells for various purposes.
It is the need for their device and the distance between sewerage wells that often raise questions among those who decide on their own, without the participation of specialists, to organize such a network.

Types and purpose of wells

There is a document regulating the arrangement of various sewer structures and the distance between them - SNiP 2.04.03-85 “Sewerage. External networks and structures”.
We will focus only on those points that relate to the domestic drainage network from a private house. Throughout the external sewage pipeline, depending on its length, the slope of the terrain and other circumstances, it is necessary to arrange intermediate wells.

Manholes

These structures are built into the network in the following cases:

• Large length of a straight pipeline;
• Changing the direction of the pipeline, its diameter or slope;
• The presence in the network of nodes in which a side pipeline is connected to a common highway.

Inspection wells are designed to organize control over the system, provide access to its problem areas in order to clean and eliminate blockages.

According to SNiP, the maximum distance between sewer wells of this type depends on the diameter of the pipe and is:

• With d150 mm - 35 meters;
• With d200-450 mm - 50 meters;
• With d500-600 mm - 75 meters, etc.

That is, the larger the diameter, the farther apart the manholes can be. Such overall pipes, if they are used in the construction of a household sewer system, then only if the volume of effluents is large enough.
For example - the total from several separate buildings (house, bathhouse, guest house). Or when rainwater from roofs and paths is discharged into the general network.
Pipes with a diameter of 100 mm (weaving) are used much more often. On such a pipeline, the distance between the inspection shafts is assumed to be 15 meters.

Note. If the pipe diameter is the same throughout, the pipeline is straight and has no side connections, the minimum distance between the sewer wells can be increased to 50 m.

Rotary wells

Having a purpose and design similar to inspection wells, rotary wells are installed on the bends of the pipeline. Any such bends, which cannot have an angle of rotation of less than 90 degrees, are areas with an increased risk of blockages, therefore inspection shafts must be arranged above them.

So:

• The distance between is determined by the length of the straight sections between the bends.
• If the length of this section exceeds the number of meters specified by the standards, additional revision well shafts are additionally equipped on it.

Drop wells

If the site on which the sewer network is installed is located on a slope, the slope of the underground pipeline being laid may turn out to be too large. This should not be allowed, since at a high wastewater flow rate, solid fractions can settle at the bottom of the pipe, gradually creating blockages.

In this case, the instruction requires the installation of overflow wells, forming a stepped system. The distance between them depends on the features of the relief and in each case is determined on the spot.
The following rules are taken into account:

• The maximum depth of the drop should not exceed three meters;
• If the drop is less than half a meter (on pipelines with a diameter of up to 600 mm), instead of a drop, a manhole with a drain is allowed.

For reference. The end point of the sewer system is a filter or storage well.

Other regulatory requirements

In addition to those described, there are other requirements for the external sewerage device. For example, the distance from the house to a sewer well of any kind and purpose (the first in the direction of flow) should be at least 3 and not more than 12 meters.
Do not forget about the sanitary standards that regulate the location of sewer wells and pipelines in relation to reservoirs, sources of drinking water, water supply systems for domestic and drinking purposes, fruit trees and horticultural plantings.

Conclusion

In principle, the improvement of your own home is not the most difficult task. Work on laying pipes and installing sewer facilities is quite within the power of any homeowner.
How to do this is described in the video in this article and in other materials on our site. But if certain norms and rules are not observed, even a carefully and accurately installed system may cease to function normally, and in order to clean or repair it, you will have to open the entire line in search of a blockage.
This will not happen if you have access to the most problematic areas and the ability to control the operation of the system.

Wells play an important role in the operation of the sewer system. This is a necessary structure, without which the system will not function properly, or even completely clog. Sewer wells are not randomly located on the track, but have their own place. And each of them does their job. The number of installation of wells depends on the length of the route, turns, drops, as well as the diameter of the sewer pipes. The existing SNiP document clearly indicates the device, purpose, as well as the distance between the sewer wells. Let's take a closer look at all types of sewer wells, their purpose and their installation locations.

Inspection sewer wells

This type of wells serves to inspect and control the sewer system. They also clean the pipeline in case of blockage. Inspection wells are installed on a long straight pipeline, bends, at the points of connection of the side sleeves, as well as at the point of change in the diameter of the pipe or its slope. The distance between installed wells for pipes of different diameters is calculated, guided by the SNiP document. On a straight line with a pipe diameter of 150 mm, the distance between the wells should be 35 m. For pipes from 200 mm to 450 mm, the distance will be 50 m. There is probably no point in listing larger pipe diameters. They are mainly used in central sewer systems, with a large volume of wastewater. As you understand, with an increase in the diameter of the pipe, the distance between the manholes increases. This is because a larger diameter pipe is less likely to clog. There are cases when the distance can be increased up to 50 meters on a flat track with the same pipe diameter and without side arms. In everyday life in summer cottages and private courtyards, PVC pipes with a diameter of 110 mm are used for sewerage. On such networks, the distance between the wells can be reduced to 15 meters.

Rotary sewer wells

This type of well performs the same functions as a viewing well. Has the same device. And it got its name due to the fact that it is installed at the turn of the highway. Every turn or bend in a pipeline can become a blockage point. In order to have access to clean this section of the sewer, wells are installed at all turns and bends without exception. If the rectilinear distance between the rotary wells is large, then additional manholes are installed in this area.

Overflowing sewer wells

This type of well is installed in problem areas of the sewer, where it is impossible to maintain the correct slope of the pipeline. Take, for example, a large slope. In such a place, the correct slope of the pipeline cannot be maintained. And this entails a quick discharge of wastewater, which will not have time to take solid accumulations with them, and the pipe will clog over time. Therefore, in such places, overflow wells are installed according to a stepped system. The distance between such wells is determined individually and depends on the slope, but the difference should not be more than 3 m. If the sewer has a pipe diameter of up to 600 mm and the difference is less than 50 cm, it is possible to replace the overflow well with a viewing well equipped with a drain.

At the end of the sewer system, the so-called final well is necessarily installed. This is the place where all wastewater from the sewer is drained. It can be both filtering and accumulative. But the bottom line is that in front of this well or in front of a tie-in to the city highway, a control well is installed at a distance of 1.5 m.

Distance from the building

At the exit from the building of the sewer system, the first well is necessarily installed. According to the norms, it should be located at least 3 m from the wall of the building in the direction of the flow, but not more than 12 m. Basically, the length of the outlet of the manhole from the wall of the building should not be more than 8 m. If this distance cannot be maintained, then an additional well.

When building a sewer, maintaining a distance between wells, do not neglect sanitary standards. Remember that in addition to the correct distance between them, the distance of the well from the reservoir, drinking spring, garden plantings must be maintained. The distance to the water well depends on the material of the pipe from which the water supply is made. But in any case, at least 5 m. If it is a drain well, then it is located at least 10 m from the water supply.

As you understand, any sewer, built according to all the rules and regulations, eventually requires cleaning and maintenance. Therefore, so that you do not have to open the entire network when the pipes become clogged, install the wells correctly. Having withstood all distances in accordance with established standards, you can always get to the problematic section of the pipeline and carry out an audit.