Polymer sand well: types, installation, review of advantages and disadvantages

As part of drainage systems, water supply, outdoor sewage and stormwater there are various well structures. Previously, they were made of wood, then of brick and reinforced concrete. But now more and more polymeric and composite materials are being used.

One of such options is a polymer-sand well from prefabricated elements. What is he so good, can you assemble it yourself? It is these questions that we will examine in detail in our article.

And also consider the constituent elements of polymer sandstone well, especially its use, the main pros and cons.

The content of the article:

  • Device and characteristics
    • Characteristics of polymer-sand products
    • Features of operation
    • Where are polymer-sand tanks used?
    • The device of a standard well from a polimerpeschny composite
    • Advantages and disadvantages of such a well
  • Standard mounting technology
    • Stage # 1 - preparation of parts and earthworks
    • Stage # 2 - Section Laying and Pipe Insertion
    • Stage # 3 - connecting pipes and checking tightness
  • Conclusions and useful video on the topic

Device and characteristics

Initially, the walls of the well mines strengthened logs of wood waterproof species. Then they began to do it with the help of reinforced concrete rings.

But in the last decade they were replaced by composite building materials, which in terms of strength characteristics are not inferior to concrete, and in terms of ease of installation - far exceed it.

Elements of a polymeric sandy well are made from:

  • plastic (recycled materials in the form of waste of various polymeric products);
  • fine sand with humidity from 0.1 to 10%;
  • multi-colored pigments based on iron oxide.

According to the manufacturing techniques, the sandy filler should be dry and uniform. Quality products are obtained only from reclaimed sand. Then inside it does not form voids, leading to a decrease in the strength and water resistance of parts of the well.

What is a precast polymer sand well

Polymer sandy well is a prefabricated structure of several elements that are easily and quickly assembled into a single structure of the desired depth.

Some unscrupulous manufacturers use instead sifted career analog, which did not undergo preliminary washing. As a result, after a couple of months, caverns, voids are formed in the polymer-sand product, and simply holes — lumps of clay rocks fall out of plastic.

With high humidity of the raw material, not only the cost of evaporation of moisture increases, but also the strength decreases with the moisture resistance of the material. It turns out not so durable, cold-resistant and resistant to water.

However, when buying, by eye, to determine the poor quality products is almost impossible. Here we have to completely rely on the integrity of the manufacturer.

Sphere of use polimerpeschany wells

Polymer sand prefabricated wells used in the laying of underground utilities, used in the construction of manholes and septic tanks

Dyes are added to the product at the stage of preparation of the mixture and baked with it in the process of hot pressing. They become part of the overall molecular structure of the material.

Therefore, even polimerpesk hatches, which are constantly in the sun, do not fade and do not require tint.

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Durable polymer-sand products

The strength of sand and polymer composition is based on the specificity of manufacturing. They serve more than 50 years, work flawlessly in the range of -60 (+60) ºС

Advantages of the modular assembly principle

Due to the modular technology of polymer-sandy wells assembly, structures of any size are constructed

Ring for the device of a mouth of a well

All components are made of polymer-sand composite: wall rings, bottom, neck rings, parts for installation of the hatch and hatches

The hatch for arrangement of a polimerpeschany well

For arrangement of the mouth of the well produce the body of the hatch and its cover. They are free to withstand impressive loads, including freight transport.

Durable polymer-sand products

Durable polymer-sand products

Advantages of the modular assembly principle

Advantages of the modular assembly principle

Ring for the device of a mouth of a well

Ring for the device of a mouth of a well

The hatch for arrangement of a polimerpeschany well

The hatch for arrangement of a polimerpeschany well

Characteristics of polymer-sand products

The sand filler used in the manufacture of the mixture accounts for about 75–80% of the total mass. He is responsible for the rigidity of the product. The rest is a binder polymer and a dye. The polymer components bind the sand into a strong, practically waterproof monolith.

As a result of hot pressing, the product is quite light, durable, durable and resistant to aggressive media.

Comparative characteristics of polymer and concrete

Technical characteristics of polymer-sand well parts surpass those of concrete analogues for strength and frost resistance

Polymer sand products are more durable and water resistant than concrete competitors. They calmly tolerate temperatures down to minus 70 centigrade. And withstand up to 500 freeze / thaw cycles.

At the same time, the polymer-sand composite is resistant to chemicals. He is not afraid of the aggressive environment of sewage. And when washing the well, you can use any detergent, both household and industrial.

Features of operation

Structurally, the well is a vertically recessed hydraulic structure. During operation, it is exposed to groundwater and wastewater, as well as temperature fluctuations during the seasons of winter freezing of the soil and subsequent thawing.

The material of its manufacture must have an increased resistance to these factors, otherwise the tightness of the tank will be questioned.

Polymer sand wells differ in diameter of the inner rings and the hatch. These elements are durable enough, but when holes appear, they will be difficult to repair. The best option in this case is a complete replacement of the leaky part.

On the one hand, polymer-sand well constructions are cheap and easy to assemble, and on the other hand, their individual parts cannot be repaired. With the appearance of holes in the walls of the ring will have to be changed. And for this purpose it will be necessary to dig the well to the level of damage and re-shift its elements.

System "groove-crest" ring well

Thanks to the “tongue and groove” system, the rings are connected as tightly as possible, and for reliable sealing it is enough to lubricate them with silicone

Manufacturers promise up to half a century of operation of products from polymer sandwich and perfect tightness of the joints of the rings. Provides tightness due to the groove on the edge of all elements of the well, which do not allow the rings to diverge when the ground moves.

Another weighty plus of the groove-ridge lock on the ends of the rings is that when assembling the well, verticality is spontaneously observed.

The negative nuance is the compliance of the polymer base to mechanical stress. If you use hard scrapers when cleaning the well and apply excessive diligence while doing so, it is possible to damage the polymer walls, as a result, to reduce the water-repellent qualities of the underground structures.

Where are polymer-sand tanks used?

Well-made structures made of composites can be found on the roads, industrial sites and the territories of private estates.

They are applied:

  1. When organizing storm sewers for drainage wells and manholes for drainage.
  2. As septic tanks drives sewage.
  3. At arrangement of wells with technical water.
  4. As hermetic walls during construction borehole caisson.

Airtight structures are collected from individual polymer-sand rings mainly for accumulation and removal of effluent.

They perfectly keep sewage sewage inside, do not react to the aggressiveness of such an environment, and impeccably prevent the penetration of liquids outside the sewer system.

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Actual use in communications device

Minimal moisture absorption, corrosion resistance and durability - a good reason for the use of polymer-sand products in the underground laying of communications

Cesspool from polymer sanding elements

The monolithic structure of the elements of polymer-composite composite and the tightness of the joints allows the construction of cesspools

Components of autonomous sewage

Products are used in the construction of single- and multi-chamber septic tanks, inspection and rotary sewer wells

Storm sewer drainage well

Rings and other elements from the sand-polymer compound are required in the device of drainage wells during the underground installation of all types of communications

Wells laid in the ground autonomous water supply

With the help of elements of polymer sandpaper, practically all objects of a stationary autonomous water pipeline laid in the ground are constructed.

Caisson device for water well

The modular assembly principle is excellent for building a caisson over a wellhead onto water. Modules without problems are drilled for the connection of pipelines

The perfect hatch in the design of any landscape

Polymer-composite composite hatches, crowning underground structures, fit into the urban and suburban landscape picture

Polymer sand modules in the repair of underground structures

The use of polymer modular elements provides an opportunity at a fast pace to repair all types of wells

Actual use in communications device

Actual use in communications device

Cesspool from polymer sanding elements

Cesspool from polymer sanding elements

Components of autonomous sewage

Components of autonomous sewage

Storm sewer drainage well

Storm sewer drainage well

Wells laid in the ground autonomous water supply

Wells laid in the ground autonomous water supply

Caisson device for water well

Caisson device for water well

The perfect hatch in the design of any landscape

The perfect hatch in the design of any landscape

Polymer sand modules in the repair of underground structures

Polymer sand modules in the repair of underground structures

The device of a standard well from a polimerpeschny composite

Well-sand polymer construction consists of several modules:

  1. Bottom (round base part).
  2. Rings in the required number of pieces.
  3. Tapering up the neck.
  4. Luke.

Most often on sale there are parts with a diameter of 850, 1000, 1100 mm. But everything depends on the manufacturer and the purpose of the structure. There are no hard state standards in this matter, all products are manufactured according to specifications.

It is possible to make a well of almost any depth out of polymer sandwich. It is enough to collect the required number of rings and connect them together. It is only necessary to correctly select the thickness of the walls so that they can withstand the weight of the structure from above.

Well layout

Polymer sand manhole is a constructor of four types of elements that you just need to assemble in the right sequence. The depth is gained by setting the required number of ordinary rings (click to enlarge)

The base has a thickness of 4.5 - 5 cm, and the ring is produced in a height of 20 cm. The hatch and the neck in the form of a truncated cone come in different sizes. On all the details there is a protrusion ("comb") and a recess ("groove"), allowing you to quickly and tightly connect the parts in a monolithic structure.

Polymer sand hatches differ in the type of load on:

  • Lungs (stand up to 3 tons). They are used for the installation of inspection and drinking wells in the adjoining plots of the private sector, as well as in the zone of green plantings.
  • Average (able to withstand up to 5-6 tons). Used in parks, on sidewalks and small car parks for passenger cars.
  • Heavy (withstand up to 12 tons). Designed for roads and local areas in cities.
  • Super heavy (do not collapse even with loads of 25 tons).

The price of different manufacturers and in different regions varies in a fairly wide range. But on average a ready-made set of a polymer-sand well three meters high will cost 25,000–28,000 rubles.

Composite hatches are without a locking mechanism, with threaded fittings (bolt with a secret) or a flag or spacer latch.

Benefits of Polymer Sand Wells

Polymer-sand prefabricated wells can last about a hundred years. During the specified period, they will not lose the tightness of the joints

For private households, the first option is suitable, but in a park or on the sidewalk it is better to close the well with a polymer sandwich hatch with a secure constipation, otherwise it can be carried away.

To hand over a plastic product on metal will not work, but our compatriots are able to adapt any thing on the farm. It is better to err.

More detailed features of polymer manholes we reviewed in this article.

Advantages and disadvantages of such a well

Among the advantages of polymer wells it is worth mentioning:

  1. Low weight of individual parts and the entire structure as a whole.
  2. Ease of installation work.
  3. The ability to make structures of any depth.
  4. The stability of the polymer composite to moisture, frost and sewage.
  5. Easy to connect the sewer pipe from the house.
  6. Guaranteed service life of 50 years.
  7. Environmental safety material.
  8. Benefit from the price among analogs (in terms of the cost of consumables and installation).

Composite material of plastic and sand are not afraid of salt, acid and alkali contained in sewage and soil. It calmly withstands the continuous action of water, the swelling of the soil through the winter, and the sharp frosts.

Some manufacturers claim a hundred years of operation without major repairs. But who checked it? Too little time has passed since their appearance on sale.

Advantages of polymeric sand rings

Polymer-sand composite is twice as light as concrete. Let out wells in the form of narrow rings weighing up to 60 kg, therefore at installation of a construction there is no need for use of construction load-lifting equipment

A polymer sandwich ring weighs about 50–60 kg, and its diameter is slightly more than a meter. It can be transported in the back of a gazelle, and even one person can handle loading / unloading.

At installation of a polimerpeschany well it will not be required to involve load-lifting equipment. To install the elements in the excavated pit, there are enough hands of a pair of workers and ropes.

What can be said about the concrete analogue. We recommend to get acquainted in more detail with the installation features septic tank made of reinforced concrete rings.

How to collect a polymer sand well

Polymer-sand well assembly scheme provides for consistent laying of the bottom, rings and necks

The only significant drawback of the well structure of the composite under consideration is the inability of the material to withstand heavy loads with the wrong choice of cover and thickness of the rings. If you put a truck on the easy hatch, the first one will inevitably crack.

The same situation with the rings. If you put products with thin walls at the bottom, and make the well very deep, then it will not last long. The bottom row will simply wrinkle under the top. No tricks in the form of props and boosts here will not help.

Standard mounting technology

Works can be performed both in summer and in winter. Difficulties with the assembly of parts should be a minimum. Only digging of frozen ground can cause problems. The main thing that used sealant allowed to work at the existing outdoor air temperature.

Installation is carried out in five stages:

  1. Unloading of composite parts.
  2. Digging trench.
  3. Assembling a “constructor” from polymer sanding segments.
  4. Connecting pipelines.
  5. Backfill.

Everything is simple, you can cope with the work yourself without the involvement of hired workers. It is important to correctly calculate the required number of rings or carefully follow the project.

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Purchase of polymer-sand elements for a caisson

Step 1: Before the construction of the caisson, it is necessary to calculate and purchase the number of elements required for its construction

Digging the pit for the installation of prefabricated structures

Step 2: Construction of the caisson is preceded by digging the pit of necessary depth and tamping its bottom

Installing the bottom of the caisson at the mouth of the water skavzhiny

Step 3: Polymer sand part is installed on the packed and leveled bottom, on the edge of which a sealant is applied

Assembling the wall elements of the working chamber

Step 4: Ordinary wall rings are alternately lowered to the installation site to assemble the working chamber

Polymer Sand Ring Compound

Step 5: A sealant is applied to the locking edge of each lower ring before installing the next element.

Installing modules to the required height

Step 6: The steps for installing wall rings are repeated to a height designed for mounting the collar ring.

Install caisson neck ring

Step 7: A cone-shaped ring of the neck is installed on the working chamber assembled from the rings, to which the hatch details will be fixed

Water supply connection and electrical cable entry

Step 8: A water pipe and electrical cable are laid in a separate insulating channel to the constructed well at a depth below the level of seasonal freezing.

Purchase of polymer-sand elements for a caisson

Purchase of polymer-sand elements for a caisson

Digging the pit for the installation of prefabricated structures

Digging the pit for the installation of prefabricated structures

Installing the bottom of the caisson at the mouth of the water skavzhiny

Installing the bottom of the caisson at the mouth of the water skavzhiny

Assembling the wall elements of the working chamber

Assembling the wall elements of the working chamber

Polymer Sand Ring Compound

Polymer Sand Ring Compound

Installing modules to the required height

Installing modules to the required height

Install caisson neck ring

Install caisson neck ring

Water supply connection and electrical cable entry

Water supply connection and electrical cable entry

Stage # 1 - preparation of parts and earthworks

The heaviest element of the well weighs no more than 60 kg. To unload the car will be enough effort a couple of people. At the same time, the weight of the whole structure will not exceed a couple of tons, one “Gazelle” is enough to transport it from the store.

Despite the high strength characteristics during transportation and storage of the ring should be laid boards. And the bottom is better to put on a pallet or platform made of wood.

A pit under a polymer-sanding well will have to be 120–130 cm wide. The outer diameter of the rings does not exceed 110 cm. Ten centimeters on each side is enough to put the details in the dug mine.

Polymer sand well with drainage holes

To make a drainage, you can not only remove the bottom, but also drill holes in the lower rings

If the well is made without a bottom, then a variant with a gradual excavation of the earth under the bottom ring is possible. But with such an undermining, the pit will have to be dug wider, otherwise it will be inconvenient to work with a shovel. Should I do extra work, taking out one and a half to two times more soil, it is up to the excavator to decide.

Stage # 2 - Section Laying and Pipe Insertion

The assembly of the well rings can be performed both in the pit itself and next to the subsequent descent down all or part of the structure at once. In any case, you can do it by two people. But when lowering the already collected well into the pit, you will need a tripod with a winch or a crane.

The bottom or starting ring is placed on a sand pad 15–20 cm thick pre-poured in and compacted at the bottom of the foundation pit.

Next, the groove in them is filled with sealant or bitumen mastic and the next part is inserted into it with a comb. So one by one all the other rings fit, and a mouth is installed on top.

Hole drilling

To insert pipes into a polymer sandwich well, it is sufficient to use a drill with a crown of the required size.

Polymer sand is quite easy to handle. Holes in it for the pipeline inputs can be made without the use of powerful tools. Enough with a conventional drill with a conventional crown for concrete or ceramics. Plus, it is not necessary to grind the edges after such drilling.

To seal the joint of the pipe and wall, it will be enough to insert a rubber cuff into the hole.

Stage # 3 - connecting pipes and checking tightness

After installing the polymer-sand well in its place in the pit is connected sewer pipes. To find out more information on installing outdoor sewer pipes, go to by this link.

Then a check of the tightness of the joints is performed, for which water is poured inside the obtained container. If the leakage is not noticeable, then it remains only to fill the gap between the walls of the pit and well construction.

Backfilling with a well

The need for a layer of insulation depends on the region of residence of the owner. So, in conditions of moderate winter temperature, it is enough just to fill in the gap between the walls of the pit and the assembled well.

The material of polymer well insulation is not required. But in cold regions a heat insulator in the form of foam plastic is recommended to be put in, otherwise the liquid inside will freeze. Here it is necessary to be guided by the project of the sewer or storm system, part of which is the assembled structure.

If a polymer well type does not suit you, we suggest that you read the instructions for installation of sewer wells from other materials.

Conclusions and useful video on the topic

Answers to frequently asked questions about such wells:

Nuances of installation of a polymeric and sandy well:

Advantages and disadvantages of polymer-composite products:

The prefabricated well, sections of which are made of polymer-sand composite, has a lot of advantages over its counterparts from other materials. It is resistant to various negative factors, durable and fairly cheap.

This is a great option for the formation of inspection shafts when laying cable lines and septic tanks. But when you buy polymere products for the device of the drinking well, you should look at the certificates. Not all products are applicable in this case.

With your own hands did you assemble a well from polymer-sanding rings at the dacha? Tell us if you needed assistants during assembly and installation, or did you do all the work alone?

Or maybe you are just planning the construction of this type of well and you still have questions after reading the article? Ask them in the comment box below.

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