Plastic manholes for drainage: types, how to choose, install rules

drainage device technology provides for the installation of wells, which differ in purpose. They need to control the operation of the underground pipeline, regular maintenance and regular cleaning. Previously, they were collected from concrete rings, and now uses products from polymeric materials.

Lightweight and durable plastic manholes for drainage greatly facilitate the process of construction of the system. Plastic products are resistant to mechanical, chemical and biological influences. Manufacturers of products thought out all the details to ensure simplicity and high speed of installation.

We'll show you how to correctly choose the plastic construction for drainage devices and how to install them. In the present article for the inspection is detailed step by step instructions. Following our advice, you can quickly arrange the suburban area efficiently operating drainage.

The content of the article:

  • Classification of drainage wells
    • Types of functional structures
    • Used in the manufacture of polymers
    • The advantages of plastic products
  • well plastic device
  • Which is better: a collecting vs monolithic?
  • Mount Technology drainage wells made of plastic
  • Insulation of manhole structures
  • Conclusions and useful videos on the topic

Classification of drainage wells

To rid the area from rain and melt waters little mounted on the drainage pipe section and trays. The same applies to the moisture in the soil, some drainage pipes will be insufficient, since fluid collected they need somewhere to take. For this purpose, a system of underground pipelines, which are an integral part of the plastic wells.

There are several different types of structures, each of which has its purpose. They have different sizes and the number of inputs can be sealed with a bottom and without it. And all this variety of devices are now made of plastic.

Well in the drainage scheme

Drainage Pit facilities needed to store water and to control the operation of the entire drainage system

Types of functional structures

six varieties of plastic wells are used in drainage systems with different functional purpose:

  1. Collector. In suburban areas arranged one collecting pit for receiving sewage of all kinds of sewage systems. If there is a need for stimulation of motion waste, it is equipped with a pump. If the planned unloading system in the underlying layer are constructed without a bottom on the filtration type.
  2. Inspection. Arranged to audit system and periodic cleaning. Are arranged at the turning point, the formation of knots or connecting the central routes.
  3. Perepadnaya. Installed in places joining of pipelines laid at different depths. Used if appropriate reducing drift velocity or when crossing any of underground structures. The drainage systems are not practically used.

By type of access to service wells systems are divided into serviced and inspection. The first type provides access to the well flowing parts of the network for maintenance, the second provides for the implementation of maintenance and other operations from the ground.

Where necessary plastic manholes for drainage

Drainage - is an engineering system for drainage, lowering the level of soil water, groundwater extraction from the base, GWL pressure reduction on underground structures. The system includes a drain (pipes with holes), filtering material backfilled serviced and inspection manholes

Functionality at the wells is different, but structurally similar. Generalized a vertically oriented tank in the ground, which has two or more output and input openings. Often one well combines a number of important functions. But in most cases, each of them is mounted to any one role.

Inspection Pit designs intended for the inspection and maintenance of the entire system. One side manholes track the status and capacity of the pipe by controlling the level of clogging, and on the other because of them produced cleaning of pipelines.

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Appointment of drainage wells

Drainage wells - are objects of diversion of excess groundwater systems that allow the maintenance of underground utilities, if necessary

Point for drainage maintenance

Wells set at the corners of the underground pipeline and the points needed to monitor its condition

The advantages of plastic products

Plastic products easy to install, does not require the use of lifting equipment during the system assembly

Mounting parts for drainage assembly

To without problems in a very fast pace conduct drainage device together with drain wells produce, bottoms, rings for manholes and hatches

The main types of drainage wells

The device drainage system accompanies mainly installing drainage wells. By moving the water drains into the collecting well, normally common to drainage and livnevki

System to protect the foundation from the water

The best time to drain the device being constructed to protect the foundation from the ground water, a period before installing formwork for pouring the foundation

Time for filling the drainage system

Once filled foundation reach the required strength, it is isolated wall, then the trench is filled with soil drainage

Luc in the arrangement of drainage wells

At the top, around the neck drainage well established hatch ring to which is attached later hatch

Appointment of drainage wells

Appointment of drainage wells

Point for drainage maintenance

Point for drainage maintenance

The advantages of plastic products

The advantages of plastic products

Mounting parts for drainage assembly

Mounting parts for drainage assembly

The main types of drainage wells

The main types of drainage wells

System to protect the foundation from the water

System to protect the foundation from the water

Time for filling the drainage system

Time for filling the drainage system

Luc in the arrangement of drainage wells

Luc in the arrangement of drainage wells

Swivel kind of manholes are used when it is necessary to turn the water flow by 90º. Linear mounted on the straight sections in an average of 50 meters, but the allowable range of distances between 40 - 150 m.

If flushing the system is supposed to be done manually with a descent into the well, then he must have a diameter of one meter. In other cases, the structure size enough in diameter of 35-50 cm. Just enough to be able to seamlessly drop into the hose for washing or pumping.

Accumulating or collecting options - a large container in which there is accumulation of waste for subsequent transfer drains in place of discharge. This may be a nearby body of water with standing or running water, storm drains.

Nodal drainage well

drainage pipes converge in the node sump, from which water is sent to: 1) the accumulator for collecting and subsequent evacuation, 2) absorbs well, serving for precoat filtration in the lower layer, 3) a collector, one used for transportation to a centralized livnevki

Well, arranged according to the principle of the filterIt allows the water to drain into the lower groundwater aquifers by pulling it away from the foundations of buildings.

However, it is permissible to arrange only on sandy soils, gravel, or gravel deposits with sand filling. Those. on soils with good filtration characteristics equal ability to absorb water.

The whole system of pipelines and wells built in such a way that the extreme in the chain structure is in the lowest point of the drained area. It is in the drive, the filter or the collector well is required to drain all the water from the site.

It is desirable that the water flows by gravity displacement. If the device gravity system is impossible for technical reasons, the collecting pit is equipped with a pump to stimulate the movement of water.

Perepadnaya cesspit

Target species Perepadnaya manhole structures - a quenching water flow rate

Perepadnaya wells the internal mechanics differ by:

  • Camera with a quencher water inside;
  • collectors with vodootboynikov system;
  • high shaft with the top and introduction branch pipe bottom;
  • Structures of the pair of separate sections connected by an overflow channel at an angle.

In some cases, the flow of energy is extinguished on the bottom, and in others it is due to the special bump. Selection of a particular embodiment depends on the level difference between the sewage pipes and the relief portion and the characteristics of soil layers thereon.

Used in the manufacture of polymers

In the manufacture of plastic wells Drainage using different polymers and structurally different technologies. The cheapest products are on the machines rotational molding. It was their most often be found in local stores.

Rotary forming the plastic body

Rotational molding technology allows to obtain solid Pit body with equal at all locations across the wall thickness

Produce wells with the following polymers:

  1. PVC (PVC) - PVC.
  2. PP (PP) - polypropylene.
  3. Polyethylene (PE) - polyethylene and conventional high density.

The most commonly used one of them with any filler, but not uncommon, and various combinations. In the resulting plastic can be added various components: from dyes to the sand.

PVC products are the most resistant to aggressive chemicals, coming inside with sinks.

They are even used in the apparatus of sewer systems in industrial plants. Polypropylene housing have high wear resistance and ductility, but becoming sufficiently strong brittle at low temperatures.

Polyethylene drainage wells are resistant to frost. They can be frozen, but after thawing the item utilities quickly recovers its shape without losing integrity. This is the best option for moving soil.

The advantages of plastic products

Among the advantages of plastic manholes for drainage including:

  1. Low weight, which eliminates the need for a crane during loading / unloading and installation.
  2. Resistant to aggressive media, mechanical damage and low temperature housing material.
  3. The service life of 50-70 years without major repairs.
  4. The presence in the body all the necessary inputs and outputs of the factory performance.
  5. The minimum amount of excavation due to thin walls and reduced diameter manhole structures.
  6. Extremely easy to install - the plastic product is easily trimmed to the desired size.
  7. Structural strength which is able to withstand tens of tonnes of load from above and heaving soil on winter laterally.

Ease of plastic elements of well housing allows all installation work forces to produce a pair of people. But this lightness lies the main flaw of wells made of plastic - with floods and heave them is trite to squeeze out of the ground.

anchor plate

To make the design from wells is not pushed out of the ground water, it must be tied to a heavy "anchor" in the form of concrete slabs

Another relative disadvantage - the high price of plastic drainage wells. However, it is worth to consider not only the cost of the product itself, but also the cost of its installation. In the case of a plastic design is not necessary to order the lift machinery, it will be sufficient pair installers and ropes for lowering elements collected in the pit.

Given the long lifetime of several decades without major repair price does not seem so excessive. The initial cost of the well of plastic repaid with interest.

Besides, the pipe connected to it is much easier than to concrete or brick analogue. Specialized skills are required for installation, inviting highly qualified specialists is not required.

well plastic device

Structural design Kolodeznaya plastic includes:

  • tapered neck;
  • a working chamber (shaft) circular in cross section;
  • collection tray and bottom of the sand.

Instead of tight bottom can be arranged draining gravel bed, because leakage drainage of water during the system poses no danger for the repair of the underlying soil and environment.

On top of the whole structure is closed the hatch, or a conventional cover. They are made of plastic, cast iron or polimerpeska. In this neck of the well capacity may not be available, then the door is placed directly on the shaft.

Driving well plastic

Prefabricated plastic well consists of the neck, the shaft of varying heights, the tray and sealing lips for sealingly connecting pipe

Mine makes corrugated, so she increased strength characteristics. When you compress the soil is not destroyed, remaining intact and sealed.

And the tray bottom with nozzles kinetnuyu constitute part of the well, wherein wiring is arranged pipes. Also, it settles all the garbage and silt entering into the drains. Often bundled with them is a special form for the pouring of the concrete substructure ( "anchor").

When installing sealed manhole structures is permissible not to use the tray for drainage. Instead, it is possible to establish a simple flat bottom. Since the construction is cheaper, but such a scenario is more susceptible to clogging of large debris. Often have to look in well shaft for inspection, and at the slightest cluttering it - clean immediately.

Inside the well can be integrated hinged ladder or steps are made in the form of inserts in the body. The pipes produced in the holes cut in the factory. Also similar to the sidebar can be made in virtually any point in the body.

Details of the classification of the plastic wells, their design features and scope of the described in this article.

Which is better: a collecting vs monolithic?

Prefabricated pit drainage is gathered from a variety of plastic parts, as a designer. Solid product is ready for installation, it is only necessary to omit in this pit dug for.

plastic monoblock

Before purchasing one-piece well, all must be carefully calculated to replace a part or to increase the mine after the installation will not work

Monolithic options are cheaper and stronger than their modular counterparts. However, they are produced in a fairly narrow range of standard sizes. Their installation is made only to the specified depth instructions.

The individual elements of the assembly easier to transport and load in the car, rather than one-piece product of large dimensions. But the compressive strength are even assembled initially inferior to whole the well. Solid body, by definition, capable of withstanding high hydrodynamic and mechanical loads.

The device is modular plastic wells for drainage

To lengthen the housing assembly can be equipped with several well silo rings in the middle part and the additional telescopic extension under the hatch (+)

Assembly of plastic parts for the well drainage is associated with the need to seal their joints. And each such joint - a potential tear and leakage.

Plus for tightening elements need nuts and bolts. They should be packaged. If not, then buy should only be galvanized fasteners, less prone to corrosion.

Mount Technology drainage wells made of plastic

If the selected team design, it must first be assembled. You can do it in the pit, but then it will have to dig a larger size.

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Installation of the drainage collected in the trench

Step 1: tray portion and the bottom of the well of the collector are collected on a level surface, and then aligned and mounted on the bottom of the trench tamped

Cutting the corrugated pipe to the well shaft

Step 2: The main part of the well shaft cut from the corrugated pipe and the design data and the height of the conical neck

The device is a corrugated collector pit mine

Step 3: To the exposed parts of the laser level of the collector well joins corrugated pipe

Fastening conical neck to the corrugated portion

Step 4: conical neck with the hatch is attached to the top of the corrugated portion of the pit, and then the trench is filled with a well ground

Installation of the drainage collected in the trench

Installation of the drainage collected in the trench

Cutting the corrugated pipe to the well shaft

Cutting the corrugated pipe to the well shaft

The device is a corrugated collector pit mine

The device is a corrugated collector pit mine

Fastening conical neck to the corrugated portion

Fastening conical neck to the corrugated portion

The depth of the pit beneath the plastic drainage well sees so that it consisted of pipe below ground and above the freezing point of the upper aquifer therein. It should be remembered that under the building will still have to pour crushed rock pillow 10-15 cm and put a concrete anchor plate of the same thickness.

If a plastic well be used for drainage of moisture in the soil below the gravel layer should be at least 30-40 cm. Pit in this case it is necessary to dig large.

The pit width is 30-50 cm larger than the outer diameter of the mounted container. This would be enough to lower the plastic product inside, and do not have to dig extra land.

At the height of Kolodeznaya design is selected so that it could no longer than 20 cm rise above the ground. The only exception is the drainage variant with lattice top, instead of the cap.

Hatches all other types of wells drainage system should be placed at 10-20 cm above the level of the turf. Otherwise, they will start in the rain to flow streams, carrying with it the leaves and other debris.

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Preparation for the well ustanovkedrenazhnogo

Step 1: Before installing the inspection pit and connecting it to the drain line the bottom of the trench and tamp

Aligning the bottom of the drainage wells being built

Step 2: Position the bottom of the well once again check the usual construction or laser level. aligned bedding sand under the drainage element if necessary

Connecting the drainage pipe to the bottom of the well

Step 3: To set in the bottom of the trench drainage wells are connected by pipes is pressing into the sockets

Cutting the corrugated pipe to the design height

Step 4: Produced cutting corrugated pipe to the design height. Perform cutting power saw or hand hacksaw

Setting the seal on the well shaft

Step 5: On the outer side of the corrugated shaft seal is installed. It is located in a recess between the lowest and the accompanying flexi hose

the well bottom with silicone processing

Step 6: Before connecting the shaft to the bottom of the drain well it cleaned and treated with silicone grease

Installation on the bottom of the well shaft

Step 7: Mine firmly latched to the bottom of the socket so that the compound is evenly distributed around the gasket

Filling the trench with soil around the well

Step 8: Fill the trench around the well is produced in layers with consecutive tamper. Power falls asleep layers no more than 30 cm

Preparation for the well ustanovkedrenazhnogo

Preparation for the well ustanovkedrenazhnogo

Aligning the bottom of the drainage wells being built

Aligning the bottom of the drainage wells being built

Connecting the drainage pipe to the bottom of the well

Connecting the drainage pipe to the bottom of the well

Cutting the corrugated pipe to the design height

Cutting the corrugated pipe to the design height

Setting the seal on the well shaft

Setting the seal on the well shaft

the well bottom with silicone processing

the well bottom with silicone processing

Installation on the bottom of the well shaft

Installation on the bottom of the well shaft

Filling the trench with soil around the well

Filling the trench with soil around the well

If the ground water in the spring regularly rise to the surface, the concrete base under the plastic a well to do it is mandatory. Among themselves they are tied nylon rope, which is definitely not rot in the ground. Anchor Concrete is not required only in areas with dense rocky ground.

For cutting additional holes need to mill the appropriate size. After breaching the hole in it you are inserted into the seal of rubber, which is placed inside the adapter. The latter shall come into the rubber seal tightly without gaps.

To do this, they must be the same size. In order to seal the joints are coated with silicone grease that facilitates the coupling indentation and at the same time forms a tight connection.

Mounting design

Installation of plastic wells of a small size can be done alone, and for the installation medium or large enough to bring one or two assistants

Then fixed in the well pit connected perforated drain pipes and sealing pipes is necessary to remove the collected drainage water.

In order to ensure the free movement of drainage water collected them laid with a slope. Thus, under its own weight, the water will flow spontaneously towards the drive, the collector or filter well.

A further back remains only to fill the hole with soil or sand-cement mixture. This is done smoothly and in layers to dramatically not squeeze the plastic housing, and not to destroy it. Stacked on top of the hatch, the installation is completed.

Cutting corrugated mine

Cutting the well shaft at the desired height is usually carried out with a hacksaw on the center speaker corrugated segment

Insulation of manhole structures

Drinking and manholes cover insulation material should be mandatory. They are used all year round, the water is at the same time must not freeze.

But with designs drainage system portion The situation is somewhat different. In winter they are not exploited. Frost in the spring and autumn of plastic is not afraid of the wells. Without fail to insulate them is not required.

However, if you desire to fulfill the insulation is, the ideal here - the foam sheets. This material is not afraid of moisture and cold.

Conclusions and useful videos on the topic

Video # 1. Mortise technology plastic body conduit via coupling:

Video # 2. Overview drainage wells from different manufacturers:

Video # 3. Step by step installation of the well structure made of plastic:

Well made of plastic, for use in the drainage system - a practical, durable and easy to install product. To install it do not have to involve construction equipment.

A variety of sizes and modular single-piece design makes it possible to arrange all of the complexity of the drainage system. It is only the right to choose their models according to functional purpose.

Please write comments in the box located below. Here you can ask a question or talk about their own experience in the installation of plastic wells. Share interesting facts and photographs on the subject of the article.

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