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August 12, 2017 18:06

Point and linear storm water drain in a private house

Point and linear storm water drain in a private house

Installation of stormwater in a private home, you can do yourself.

Do not rush to apply to masters, with their hands can perform all just a couple of days.

installation of such a system will help to preserve the foundation and the site in general by flooding, and thus prolong their life span.

When performing such work must first examine the regulations, for example, SNIP 2.04.03-85.

It shows all the necessary data for the calculation and includes answers to common questions that arise when self-installing livnevki.

first is to determine what kind of system is needed to your site.


  • point and linear livnevki
  • Initial calculations stormwater
  • Depth of the underground part of the system
  • slope of the underground part of sewage
  • Installing sewer system
  • cleaning stormwater

point and linear livnevki

Sewerage point type is created to collect rainwater from the roof of the house in a few places.

In this case, the water drainpipe enters the orderly arrangement of water intakes, which are fed to the common rail.

device stormwater line type is different from the point that protects against erosion of the surface more.

The general scheme livnevki

linear system is connected to the network in the trays or gutters, which design allows to cover a large area.

This is an appropriate choice for a country house or villa with concrete or paved paths and other sites.

to sanitation took place smoothly, you need to bias.This is provided for in the SNIP 2.04.03-85.

Storm sewage is a combination of different elements.The first in this list are receiving waters.

These elements are mounted under the downpipes for local water harvesting.

to protect the entire system from debris grilles must be installed on each of them.In this case, cleaning of storm water drain will be less.

next important element - a doorway pallets.They perform the function of receiving waters, but set them in front of doors and gates.

trays and troughs are also important components, located in ditches to facilitate diversion of water from the site.


for sewage gated not use trays and pipe laying depth of which depends on the specific terrain.

to clean stormwater in a private home is not too time-consuming, should provide trash box, it also says the SNP.

In this case, all the debris and sand will be filtered, preventing the clogging of drainage systems.

Initial calculations stormwater

main function is stormwater diversion of water from the site at a private home or cottage, and for the system to work flawlessly, you need to make a preliminary assessment.

This will require some data.You must know the mean value of rainfall in a particular area.

This information can be obtained from local meteorological service or to look into the above SNP.Just need to find out the general area of ​​the drain.

to the point system it is the projected area of ​​the roof on the plane, and for linear - set of the areas of all the territories intended for drainage.

In addition, we need information about soils, located in the area, and underground communications arrangement.

Designing stormwater begins to calculate the volume of water to be allocated.

correction factor for the regions covered by rubble - 0.4, concrete - 0.85, asphalt - 0.95, for roofs - 1.

The formula for calculating livnevki

For more accurate calculations, it is necessary to resort to the formulas in the above snip.

value of the diameter of the pipes needed for the sewer device selected by the respective values ​​of the volume of water withdrawn.The required tables are also located in the existing SNIP.

Depth of the underground part of the system

device stormwater gated involves excavation.The depth of the pipes is determined by practical experience.

This may be due to a desire to spend the minimum amount of work, as it affects the depth to which the ground freezes in winter.

order not to suffer the assumptions and calculations, you can find this information from construction companies or ask neighbors who have already set livnevki.

As a rule, pipes up to 50 cm depth of the minimum is 30 centimeters.The larger diameter pipe requires a minimum of 70 centimeters of penetration.

foundation drainage

slope of the underground sewerage

According to the SNP, so that water does not stagnate, it is necessary to make the system a bias towards a common collector.

To determine the value of the slope of pipes, it is necessary to take into account surface coatings, the type and diameter of drainage pipes.For different diameters it will be somewhat different.

For example, the pipe diameter of 15 cm should be laid so that the slope was 8 millimeters per meter of pipe.

For pipes with a diameter of 20 centimeters slope should not be less than 7 millimeters per meter of pipe.These figures may differ slightly depending on the parameters of a particular area.

most significant deviation located at the junctions of water intakes and drainage channels, as this is where the greatest need speed divert water, and it is 2 centimeters.

When the channel is close to sand traps, speed should be reduced, respectively, to reduce the slope to the suspended particles are able to settle on the bottom of the pan or tube.

Installing sewer system

Storm sewage with their own hands, if desired, can be made in a few days.

Any owner of a country house or villa can do it yourself, because no special difficulties in this, the process resembles conventional exterior styling of the pipeline.

storm sewer installation begins with the digging of the trench.However, before the excavation is necessary to outline a plan laying gutters and pipes future sewers.


It is also worth to remember about desired slope and trench depth should match the diameter of the pipe.

If you plan to insulate the pipes, the insulation layer thickness also be taken into account.

The procedure works as follows: a trench dug to the required depth, rocks and other large objects are removed, and the formed pits covered with earth.

Next you need compacted bottom of the trench and lay a his sand layer 20 cm.At this stage I see the pit under the collector.

It can be purchased plastic tank or you can do it with their own hands, the Bay of concrete into formwork prepared in advance.

When trenches are ready, they put pipe fittings All connections are made.Manholes installed in straight when the pipe is longer than 10 meters.

Also, these wells are installed in places of branching network.Trash boxes mounted on the joints of gutters and storm water pipe.


before final backfill pipe system needs to be tested, if nothing occurs anywhere, and do not form stagnation of water, it is possible to finish the excavation.

final touch - setting the bars on the drains.

cleaning stormwater

In order to delay the first repair of the storm water drain as far as possible, it is necessary to periodically clean all construction sites.

If the system no longer cope with the diverting rainwater, it is to start cleaning the roof, since it is a large number of elements that are clogged most quickly: trays, funnels, tubes.

For this you just need to remove all the accumulated garbage.If the same problem in the underground part of the work to be done a little more.

Hydrodynamic flushing

If you want to clear the open-drain, the procedure is quite simple.First shot of the lattice, and removed all visible debris.

Then water pressure washed trays and troughs.If the blockage persists, the lattice set in place.

When closed type drainage, cleaning is more difficult to carry out.

If available the necessary equipment, it is possible to handle and on their own, but sometimes to do the work necessary to invite specialists.

Sewerage gated clean hydrodynamic method.The method consists in the supply of water under high pressure to the site of the alleged obstruction.

pressure water jets able to wash the accumulated dirt, returning the system performance.

To increase the speed of work, water is best served alternately in the direction of the natural flow of water, then in the opposite.

However, the use of this method depends on the diameter of the pipe, pipe of 20 cm in diameter will have to resort to professional equipment.