Concrete trays are used for surface water collection systems, where there is a slight slope of the surface and a limited depth of immersion, for example, the thickness of the covering of a terrace, flooring in warehouses, industrial premises, or the covering of pedestrian paths and driveways.

Drainage trays are made from plastic (PVC, polypropylene), composite materials and concrete. The latter option is characterized by increased strength, durability and low cost.

Trays are an elongated container with a groove of rectangular, semicircular or square cross-section. A grill is installed on top; it prevents large debris from entering the drainage system. In products with shallow depth, a grille is not installed.

Concrete trays are used to organize linear drainage from the territory.

This system allows:

1. Reduce soil subsidence.
2. Collect and divert water flow from a large area.
3. Connect the system to storm sewer.

Linear drainage consists of buried trays and sand traps that retain small debris. Products with decorative grilles, which prevent clogging of the system and the entry of leaves and large debris into the channels.

Manufacturing technology

Trays that are used for pedestrian areas have a wide selection of shapes; colors combine well with various types of paving slabs. They are simple in shape and easy to clean from small debris.

Concrete trays are produced in factories that produce reinforced concrete products. They are made from concrete using the vibrocompression method, which increases the strength and resistance of products to chemical and mechanical influences.

In a factory setting, in a mold for pressing under high pressure, the concrete mixture vibrates. As a result, air bubbles are removed, the mixture is compacted and the product becomes more dense. The concrete is additionally reinforced with fiberglass.

Use drainage trays For:

1. Pedestrian zones: sidewalks, summer areas of cafes and restaurants, territories of private houses, when organizing landscapes in parks and squares.
2. On roadways and in traffic areas at gas stations, in car washes, covered above-ground or underground garages.

Kinds

Sand trap

Depending on the place of use, there are internal and external. Indoor models are most often used in factory workshops and sports facilities.

External ones are divided into:

1. Watershed.
2. Discharging water.
3. With sand catcher.

Drainage systems are used to drain areas and protect building foundations from flooding. They form a system that collects water from a large area at one or several points.

Trays that drain water are used to organize a drainage system. They collect and discharge water from the territory into storm drains or special water intakes.

Sand traps help increase the service life of the drainage system, because they collect large particles of debris.

Also, there are models with an internal slope of 0.5%, which allows water to be removed from areas with minimal or no slope.

When choosing a tray, you need to pay attention to the compliance with the technical characteristics, the conditions under which it is installed. Also, the volume of drainage water and the loads transmitted from vehicles and equipment must be taken into account.

Specifications

In the production of trays, heavy grades of concrete are used, which guarantees their strength and resistance to a humid environment. Some manufacturers coat the inner surface of the tray with special compounds that prevent water penetration.

The surface of concrete trays used on industrial enterprises, coated , to prevent destruction.

Frost resistance of concrete trays is F300, meaning they can withstand 300 freeze-thaw cycles without losing strength.

The drainage coefficient depends on the angle of inclination of the surface and on overall dimensions trays. For warehouse or industrial premises without slope, models with internal slope can be used.

To the maximum permissible load, products are divided into several groups:

1. A 15 with a load of up to 1.5 tons, are used for country houses, pedestrian and bicycle paths.
2. B 125 with a load of up to 12.5 tons, used in parking lots and small garages.
3. From 250 with a load of up to 25 tons, used for gas stations, car washes.
4. D 400 with a load of up to 40 tons for roads for any type of transport.
5. E 600 with a load of up to 60 tons for industrial and logistics facilities.
6. F 900 with a load of up to 90 tons, used for airfields and military facilities.

Advantages, disadvantages and price

Main advantages:

1. Strength concrete products.
2. High frost resistance.
3. Chemical resistance.
– used on highways, terminals, and in industry.
4. Possibility of fixing the gratings using bolted connections.
5. Wide range of products various widths and sections.

The main disadvantage of concrete trays- this is their weight. Therefore, they are laid using mechanisms, which complicates the process. On average, a product with a length of 1 meter and a width of 13.8 cm weighs from 14 kg. The product, with a width of 25 to 40 cm and a length of 1 meter, weighs from 58 to 198 kg. There are trays weighing about 352 kg.

The cost of a concrete tray depends on its technical characteristics and use cases.

Related products are included with them:

1. Steel plate, reinforcing the product.
2. Water intake grates made of galvanized or of stainless steel, cast iron, copper.
3. Special fasteners.
4. End cap, sits on cement mortar.

Some trays are sold with grids, which also affects the cost of the product.

Concrete goods L-1-7

The Russian construction market has big choice concrete trays:

Estimated cost of products:

1. POLITEP company
2. Concrete concrete plant 11, model L-1-7, used to prevent waterlogging of the soil, price 750 rubles.
3. POLITEP company, model SD-20 for the road with a grill, price 3800 rubles.
4. POLITEP company, model SG-6 with drainage, without grille, price 300 rubles.

Dimensions and GOST

The smallest trays come in the following sizes: width 14 cm, height 6 cm, length 50 cm. They are used to drain water in a small area of ​​a private or low-rise building.

Products with dimensions: width 13.8 cm, height 12.5 cm, length 1 meter, are used in the construction of country houses, small car washes, gas stations.

Trays with dimensions: width 65 cm, height 50.5 cm and length 1 meter, are used for organizing drainage in places with heavy traffic of cars and trucks, at industrial and warehouse facilities, at terminals.

IN building codes Russia has several regulatory documents, which indicate the main parameters of concrete trays. The main one is GOST-21509-76. The shape, maximum permissible deviations and features of transportation of products are indicated here.

GOST-23009-78 is a collection of rules governing the production of reinforced concrete products.

Concrete drainage trays are also produced with drainage grates made of cast iron. They are most often called kits, have a high water throughput and can withstand intense loads. They are used to organize linear drainage at large gas stations, warehouses and industrial facilities, in places of heavy traffic.

Concrete drainage trays are one of the most necessary parts in the construction and organization of systems for draining rainwater from buildings and in the organization of cable systems. Let's look at what types of trays there are and how they are used.

The strength and durability of concrete structures is ensured by the quality and water resistance of the brand of concrete that is used to fill the form. That is why the trays are based on a mixture of a grade no lower than M-200. In addition, the base is made of class A reinforcement rods or Bp-I grade wire base. Quality finished product regulated by the requirements of GOST 21509-85.

Here are the main parameters that are specified in GOST:

• moisture resistance and ability to withstand frost;
• corrosion resistance metal parts and fittings;
• thickness and density of the concrete layer;
• General characteristics concrete mixture;
• resistance of the finished product to mechanical stress;
• the presence of voids in the cavity of the product.

Depending on the ratio of all the above parameters, there are three directions for using concrete drainage trays:

• drainage - function;
• for laying cables;
• to protect the heating main.

back to menu

From the name of the product it is clear that they are used to organize drainage systems and drains. Functions performed by these products:

1. Providing drainage, that is, removing excess moisture from the surrounding soil.
2. Moisture redistribution. Removing water from road surface and transporting it to the roadside or slopes.
3. Organization of channels for water outflow.
4. Ensuring the outflow of storm water.
5. Sewage function - connections drainage systems with collectors.

Types of drainage trays

In accordance with GOST, there are three main types:

• in the form of a trapezoid;
• in the form of the letter P;
• in the form of a parabola.

At the same time, the first and second types can be either with a flat, flat internal base, or in the form of a round gutter. All the main characteristics, as well as the scope of their application, can be found out from the markings. It is especially important to study the markings when constructing or installing pipelines in difficult natural conditions. For example, when laying tracks in soil subject to seasonal fluctuations: swampy terrain, the presence of a clay layer, the presence of groundwater.

This also includes work that is carried out in the far north. Here is the most important requirement- this is resistance to low temperatures. Drainage trays are marked with the letter L, and two numbers indicate the series number and the maximum vertical load.

For ease of installation, trays come in two types: prefabricated and integral. Common models: length ranges from 0.72 meters to 6 meters, width from 0.4 meters to 1.84 meters, edge height from 0.38 meters to 1.32 meters.

Return to menu

The main purpose of these trays is to reliably protect the pipeline from corrosion, reduce heat loss and protect pipes from rodents. For sewerage and heating mains I use two types of trays:

• GOST Klp - these trays are covered with removable lids;
• GOST Kls - connection using channel fasteners.

The advantage of concrete trays over their brick counterparts:

• saving time and effort during installation due to the simplicity and integrity of the structure;
• significant cost reduction due to reduction Supplies;
• significant superiority in load-bearing capacity;
• ability to withstand sharp changes temperatures and soil fluctuations.

back to menu

For the use of sewer trays, the letter K is indicated, and for heating mains, the letter L. Let’s compare the cost of various concrete trays.

When buying a tray, you need to analyze in detail all the parameters of the product you have chosen: load, dimensions, assembly method and availability of a certificate.

The average price for one LK type tray measuring 350 mm by 350 mm and 2970 mm will be 1,700 rubles. It can be used to provide drainage systems. For example, during the construction of highways or bridges. Product L 2-8\2 with parameters 360 mm by 570 mm and 2970 mm will cost 2450 rubles. These trays are wider and are ideal for constructing drainage systems for walking paths and draining rainwater from residential buildings.

LK 300. 4 5.30-1, has the following dimensions: 280 mm by 430 mm and 2990 mm. The price of this tray will be 3315 rubles. Such products are ideal for installing heating systems and laying cables. The most expensive option is L 10-8\2 with parameters of 550 mm by 1480 mm and 2970 mm. The cost of this product is 6600 rubles.

Additional materials:

Administrator

GOST 21509-76 Reinforced concrete trays for irrigation systems. Technical specifications (with Amendment No. 1), GOST dated December 31, 1975 No. 21509-76

GOST 21509-76Group Zh33

Date of introduction 1977-01-01

APPROVED AND ENTERED INTO EFFECT by Resolution of the State Committee of the Council of Ministers of the USSR for Construction Affairs dated December 31, 1975 N 247

REISSUE (November 1984) with Amendment No. 1, approved in September 1984; Fast. N 159 from 12.09.84 (IUS 2-85)

This standard applies to reinforced concrete socket-shaped trays of parabolic cross-section made from heavy concrete medium density 2200-2500 kg/cub.m inclusive and intended for the installation of prefabricated distribution channels of irrigation systems for water flow up to 5 cubic meters/s.

The technical level indicators established by this standard are provided for trays of the first quality category.

1. TYPES, BRANDS AND SIZES

1.1. According to operating conditions, reinforced concrete parabolic trays are divided into the following types:

LR - trays constructed on piles, rack supports and slabs;

LRG - trays laid in the ground.

The shape, main dimensions and material consumption indicators (concrete and steel consumption) of the trays must correspond to those indicated in Figure 1 and Table 1

Figure 1 Shape, main dimensions and material consumption indicators (concrete and steel consumption) of trays

Table 1(Left side)

Markalotka

Main dimensions, mm

Table 1(left side)

Markalotka		Material consumption	Reference weight, t
		Concrete, cubic meters

Note. The reference mass of the tray is given for concrete with an average density of 2400 kg/cub.m

1.2. Trays should be marked with marks in accordance with GOST 23009-78.

The tray brand consists of one alphanumeric group and contains the designation of the tray type and the nominal height of the tray in decimeters, the value of which is rounded to the nearest whole number.

Example symbol(brand) reinforced concrete socket tray type LR with a height of 400 mm:

1.1, 1.2. (Changed edition, Amendment No. 1).

2. TECHNICAL REQUIREMENTS

2.1. Trays should be manufactured in accordance with the requirements of this standard and technological documentation approved in the prescribed manner, according to working drawings standard designs series 3.820.1-34с/85.

Trays should be made using thermal shields-weights.

2.2. Values ​​of actual deviations geometric parameters should not exceed the limits specified in Table 2.

table 2

2.3. Trays must be waterproof and withstand hydrostatic tests when loaded with the design operating load.

Trays must meet the requirements of GOST 13015.0-83:

according to the actual strength of concrete (at design age and tempering age);

on frost resistance and water resistance of concrete;

to the quality of materials used to prepare concrete;

to concrete, as well as materials for preparing concrete trays used under conditions of exposure to aggressive soils and groundwater;

to the shape and size of reinforcement and embedded products and their position in the tray;

to steel grades for reinforcing and embedded products, including for mounting hinges;

by deviation of the thickness of the protective layer of concrete;

on corrosion protection;

on the use of molds for the manufacture of trays.

2.4. Trays should be made of heavy concrete with compressive strength grade M300.

2.5. The normalized tempering strength of concrete should be 70% of the compressive strength grade of concrete.

2.6. Aggregates used to prepare concrete trays must meet the requirements of GOST 10268-80. The largest aggregate size should be no more than 15 mm.

2.7. Concrete used for the manufacture of trays must be prepared with Portland cement grade no lower than 400 according to GOST 10178-76, and for the manufacture of trays intended for use in soils with aggressive waters - with sulfate-resistant Portland cement in accordance with GOST 22266-76.

The use of slag Portland cement, pozzolanic Portland cement, and Portland cement with active additives is not allowed.

2.8. The thickness of the protective layer of concrete up to the working reinforcement must be at least 15 mm.

For trays operated in aggressive environments, deviations in the thickness of the protective layer of concrete to the reinforcement should not be more than plus 3 mm.

2.9. Welded reinforcement and embedded products must meet the requirements of GOST 10922-75.

The longitudinal bars of the mesh of unstressed trays must be made of hot-rolled steel of a periodic profile with a diameter of 6 mm class A-I II according to GOST 5781-82.

Transverse reinforcement of trays must be made from periodic profile reinforcing wire of class VR-1 with a diameter of 5 mm in accordance with GOST 6727-80.

2.1.-2.9. (Changed edition, Amendment No. 1).

2.10. (Deleted, Amendment No. 1).

2.11. On the inner surface of the socket and on the outer surface of the end of the tray in the area where the sealing materials are located, sagging and chips of concrete, as well as cavities with a diameter of more than 3 mm and a depth of more than 2 mm, are not allowed. The number of sinks in an area of ​​0.01 sq.m (100x100 mm) in any part of the specified surface area should be no more than three. The remaining concrete surface of the tray must be of category A6 according to GOST 13015.0-83.

Cracks are not allowed on the surface of the trays, with the exception of local shrinkage cracks with a width of no more than 0.1 mm on the outer surface of the socket and a technological boss in the shell of the tray.

(Changed edition, Amendment No. 1).

2.12. The embedded products of clamps in LRG type trays should be made from steel strip grade VSt.3sp2 in accordance with GOST 103-76, class A-1 reinforcement in accordance with GOST 5781-82 and welded to the reinforcing mesh of the socket.

2.13. Manufacturers of trays must supply consumers with trays complete with sealing materials for sealing butt joints: rubber bands round section according to GOST 6467-79 or rubber porous gaskets according to GOST 19177-81.

2.12, 2.13. (Introduced additionally, Amendment No. 1).

3. ACCEPTANCE RULES AND TEST METHODS

3.1. Trays should be accepted in batches in accordance with the requirements of GOST 13015.1-81 and this standard.

The number of trays in a batch should be no more than:

200 - for trays with a height of 400-800 mm;

100 - for trays with a height of 1000 mm.

3.2. Acceptance of trays in terms of frost resistance and water resistance of concrete should be carried out based on the results of periodic tests.

3.3. Acceptance of trays in terms of their water resistance, concrete strength (compressive strength grade and tempering strength), compliance of reinforcement and embedded products project documentation, strength of welded joints, accuracy of geometric parameters, thickness of the protective layer of concrete to the reinforcement, width of opening of shrinkage cracks, category of the concrete surface should be carried out based on the results of acceptance tests and control.

The water resistance test should be carried out on 1% of the trays from the batch, but not less than two trays.

3.4. Acceptance of trays in terms of the accuracy of geometric parameters, the thickness of the protective layer of concrete to the reinforcement, the quality of concrete surfaces, controlled by measurements, should be carried out according to the results of a single-stage selective control.

3.5. The dimensions of the trays, the position of the mounting loops, the thickness of the protective layer of concrete to the reinforcement, as well as the quality of the surfaces and the appearance of the trays are checked according to GOST 13015-75.

The wall thickness is measured at the ends of the trays evenly along the perimeter of the tray cross-section at at least five points.

The non-perpendicularity of the end planes of the tray to its longitudinal axis is determined by measuring largest gap between the end plane of the tray and a metal test square installed at right angles to the side of the tray.

Determination of the thickness of the protective layer of concrete, the size and location of reinforcement can also be done by scanning with ionizing radiation according to GOST 17625-83.

3.6. The compressive strength of concrete should be determined according to GOST 10180-78.

Monitoring and assessment of the homogeneity and strength of concrete trays should be carried out in accordance with GOST 18105.1-80.

If during the inspection it is established that the actual tempering strength of the concrete of the trays is lower than the required tempering strength, then the trays should be delivered to the consumer after the concrete reaches a strength corresponding to the grade of concrete in terms of compressive strength.

3.7. Frost resistance of concrete should be determined according to GOST 10060-76, water resistance of concrete - according to GOST 12730.5-78.

3.1.-3.7. (Changed edition, Amendment No. 1).

3.8, 3.9 (Excluded, Amendment No. 1).

3.10. Testing of trays for water resistance is carried out on a special stand according to the diagram shown in Figure 2, in the following order.

Figure 2 Scheme of hydrostatic tests of the tray for water tightness

Scheme of hydrostatic testing of a tray for water tightness

1 - test tray; 2 - shortened tray (2 pcs.); 3 - plugs; 4 - tray supports; 5 - gasket.

When transporting trays by rail, they must be loaded and secured in accordance with current instructions for the transportation of goods approved by the Ministry of Railways.

After applying each load step, the tray is kept under this load for 15 minutes and the tray is inspected to detect cracks, leaks or wet spots.

A tray completely filled with water is kept for 24 hours.

3.11. A batch of trays is considered to have passed the water resistance test if in all trays selected from this batch in the quantity established in clause 3.3, one day after they are filled, no water filtration in the form of wet spots or leaks is detected.

If unsatisfactory test results are obtained on at least one tray, re-test twice the number of samples taken from the same batch. If the result of repeated tests is unsatisfactory, the batch is considered to have failed the test.

3.10, 3.11. (Changed edition, Amendment No. 1).

4. MARKING, STORAGE AND TRANSPORTATION

4.1. Marking of trays - according to GOST 13015.2-81. Markings and signs should be applied to the outer surface of the tray socket.

4.2. Transportation and storage of trays - in accordance with GOST 13015.4-84 and this standard.

The trays are stacked on special gaskets that eliminate the occurrence of expansion forces, with sockets in different directions. Pads are installed under the lower tray. The height of the stack should not exceed 2 m.

4.1, 4.2. (Changed edition, Amendment No. 1).

4.3. Passages between stacks should be arranged in the longitudinal direction every two adjacent stacks, and in the transverse direction - at least every 25 m. The width of the passages should be at least 0.7 m, and the size of the gaps between adjacent stacks should be at least 0.2 m.

4.4. Transportation of trays by road must be carried out in vehicles equipped with special containers.

4.5. Trays are transported both in working and non-working positions (bottom up).

4.4, 4.5. (Changed edition, Amendment No. 1).

4.6. (Deleted, Amendment No. 1).

4.7. Requirements for the document on the quality of trays supplied to the consumer are in accordance with GOST 13015.3-81.

(Changed edition, Amendment No. 1).

The text of the document is verified according to: official publication

M.: Standards Publishing House, 1985

docs.cntd.ru

Reinforced concrete drainage trays

For drainage of water from roads and buildings, laying various types communications and heating mains use special protective structures - trays made of high-quality anti-corrosion materials. An important advantage of reinforced concrete structures is their affordable price, noticeable savings time for construction and installation work. Familiarization with the classification protective products will help you choose the right type and size of reinforced concrete trays to solve a specific engineering problem.

1. Technical requirements
2. Types of trays
3. Dimensions
4. Explanation of markings
5. Prices

Features and purpose

The material is concrete with a density of at least 2400 kg/m3, reinforced with class A-I, A-II or reinforcement reinforcement wire B-I. Based on the manufacturing method, a distinction is made between vibration-cast and vibration-pressed trays. The second type is more resistant to the aggressive influence of the external environment; concrete produced using a vibrating press is dense, with a uniform structure and low water permeability. The walls of products are sometimes strengthened using galvanized steel linings.

The following requirements apply to trays, according to GOST 13015.0-83, 10268-80:

• concrete compressive strength – at least M300;
• particle size of the concrete mixture aggregate – maximum 15 mm;
• Portland cement used - grade not lower than M400;
• the thickness of the concrete layer above the reinforcement is at least 15 mm;
• on work surface there should be no sagging of concrete, sinks with a depth of more than 2 mm and a diameter of more than 3 mm;
• Shrinkage cracks no thicker than 0.1 mm may be present on the outer surface.

According to the functions they perform, protective concrete products are classified as follows:

1. drainage trays (type L, series 006.1-2/87) - used to create drainage, sewer and collector networks, used for transporting waste, subsoil and rainwater;

2. cable (type UBK, UBS, series of drawings 3.006.1-2.87) - protect cable channels (electrical, information, communications) and buses laid underground from damage, and are also reliable electrical insulators, preventing contact of high-voltage power lines with soil;

3. heating main trays (type L, series 006.1-8) - protect pipes filled with steam or hot water, from heat loss, pressure and soil displacement, corrosion destruction, rodents;

4. drainage (MFBL) - for removing subsoil, melt and rain moisture from the foundations of houses, parking lots, pedestrian areas, highways, railway tracks;

5. road (type L, B; series 503.1-66) – remove water from roads to slopes;

6. intersleepers, intertracks (MPL, MSHL, series 501-68) - for draining water from railway lines.

Reinforced concrete drainage trays can perform various functions. Depending on the purpose of use, design and method of installation, they are divided into the following groups:

• storm drains - for collecting and draining large volumes of water generated during heavy rains;
• sewer - transport wastewater to collectors;
• telescopic - for collecting water on slopes and embankments and discharging it in a specially designated area; when constructing roads, they are used to create a transverse drainage system;
• culverts are gutters to ensure the gravity movement of water.

Types of trays

The industry produces products with rectangular, triangular, trapezoidal, elliptical, and parabolic cross-sections. The required form selected depending on the technical problems being solved.

1. Square or rectangular. The most common type is a U-shaped box, resembling a gutter. Channel trays have this profile: bundles of cables are laid in them, the gaps are filled with concrete mixture, and waterproofing is done using mastic. In drainage systems, reinforced concrete culverts of rectangular cross-section are also most often used.

2. Triangular. This is the best option for storm sewers laid along roads; a triangular profile is preferable.

3. Trapezoidal. This form is characteristic of telescopic drainage trays: laid along the slope, they are inserted into each other. This allows you to withstand the water pressure that arises due to the difference in height.

4. Parabolic. They serve for water drainage, drainage, waste removal and are complemented by gratings made of cast iron, stainless steel, and plastic. Fences provide safety, serve an aesthetic role and act as a barrier to debris. Precast concrete trays with a parabolic cross-section are installed on a “cushion” of concrete, and the joints are sealed with mortar.

In each of these groups there are different modifications - solid, prefabricated, wide, narrow, additional.

Tray dimensions

The size of the product depends on its functional purpose, brand and design load. Length, width, height, wall thickness, volume vary. Conventionally, trays are divided into two categories: standard and non-standard. The most popular are GOST reinforced concrete products with the following dimensions:

• rectangular and square – 2970x420x360; 2970x1840x570; 2970x2780x1060 mm;
• trapezoidal – 2990x280x280; 2990x1180x430; 2990x2080x880 mm;
• parabolic – 720x420x360; 720x1160x1310; 720x2780x1060 mm.

It makes sense to order non-standard trays for large objects so that the cost of designing and manufacturing equipment is recouped. In this case, the main parameters must meet general technical requirements.

How are products labeled?

Each series has a specific designation, which is a combination of letters and numbers. The marking, regulated by state standards, encodes the type, size, design features, and load index. The following are several examples of reinforced concrete designations.

1. For insulation of heating mains (for example, L-12-8/2). The letter L with a number from the series (12) indicates the standard size, the number 8 - the design load in tf/m2. The number 2 after the stroke indicates that the length does not match standard size(6 m), and is ½ of this figure - 3 m.

2. Culvert trays. They are marked with the letters B or LT. Series B includes products with the following dimensions: length – 1000-2500 mm, width – 375-750, height – 215-450 mm. The size of the LT is slightly larger: length – 1000-5980, width – 360-1700, height – 80-1000 mm.

3. Cable (for example, UBK.2A). The letter code indicates that the product is a universal cable, number 2 is the standard size (1990x500x160 mm). The letter A means that there are embedded elements (mesh and rods).

Price

Precast concrete products are the most affordable option arrangement of a water disposal or drainage system. The price depends on the design features, design load class, throughput (width of the hydraulic section), and manufacturing technology. It is advisable to purchase products from the manufacturer: in this case, you can avoid customs and logistics surcharges. To ensure the quality of the product, you should familiarize yourself with its certificate and quality guarantees from the supplier.

Average prices for trays sold in the Moscow region are shown in the table.

304.00 ₽

Distributing regulatory documentation since 1999. We punch checks, pay taxes, accept all legal forms of payment without additional interest. Our clients are protected by law. LLC "CNTI Normocontrol"

Our prices are lower than other places because we work directly with document providers.

Delivery methods

• Express courier delivery (1-3 days)
• Courier delivery (7 days)
• Pickup from the Moscow office
• Russian Post

Applies to drainage trays made of concrete (reinforced concrete) and polymer concrete used on highways common use, and establishes methods for monitoring the technical indicators of trays established by GOST 32955-2014.

The standard does not apply to methods of industrial technological control in the manufacture of trays, as well as to methods of control of initial raw materials used for the manufacture of trays.

3 Terms and definitions

6 Monitoring the accuracy of measurement results

7 Control of geometric parameters and dimensions

16 Determination of specific effective activity of natural radionuclides

• GOST 26433.0-85General provisions
• GOST 26433.1-89System for ensuring the accuracy of geometric parameters in construction. Rules for performing measurements. Factory-made elements
• GOST 8829-94Prefabricated reinforced concrete and concrete building products. Load test methods. Rules for assessing strength, stiffness and crack resistance. Replaced by GOST 8829-2018.
• GOST 10922-90Welded reinforcement and embedded products, welded connections of reinforcement and embedded products of reinforced concrete structures. General technical conditions. Replaced by GOST 10922-2012.
• GOST 17625-83Constructions and reinforced concrete products. Radiation method for determining the thickness of the protective layer of concrete, the size and location of reinforcement
• GOST 22904-93Constructions reinforced concrete. Magnetic method for determining the thickness of the protective layer of concrete and the location of reinforcement
• GOST 23858-79Welded butt and tee connections for reinforced concrete structures. Ultrasonic quality control methods. Acceptance rules
• GOST 12730.0-78Concrete. General requirements for methods for determining density, humidity, water absorption, porosity and water resistance
• GOST 12730.3-78Concrete. Method for determining water absorption
• GOST 13087-81Concrete. Methods for determining abrasion. Replaced by GOST 13087-2018.
• GOST 22690-88Concrete. Determination of strength by mechanical methods of non-destructive testing. Replaced by GOST 22690-2015.
• GOST 30108-94Construction materials and products. Determination of specific effective activity of natural radionuclides
• GOST 12.1.007-76Harmful substances. Classification and general safety requirements
• GOST 12.1.019-79System of occupational safety standards. Electrical safety. General requirements and nomenclature of types of protection
• GOST 7502-98Metal measuring tapes. Specifications
• GOST 166-89Calipers. Specifications
• GOST 3749-77Test squares 90°. Specifications
• GOST 427-75Metal measuring rulers. Specifications
• GOST 3634-99Manholes for inspection wells and stormwater inlets. Specifications
• GOST 18321-73Statistical quality control. Methods for random selection of samples of piece goods
• GOST 10181-2000Concrete mixtures. Test methods. Replaced by GOST 10181-2014.
• GOST 12.4.131-83Robes women's Specifications
• GOST 12.4.132-83Robes men's Specifications
• GOST 20010-93Rubber technical gloves. Specifications
• GOST 25706-83Magnifiers. Types, basic parameters. General technical requirements
• GOST 28846-90Gloves and mittens. General technical conditions
• GOST 8026-92Straight lines. Specifications
• GOST 18105-2010Concrete. Rules for monitoring and assessing strength. Replaced by GOST 18105-2018.
• GOST 10180-2012Concrete. Determination methods strength according to control samples
• GOST 10060-2012Concrete. Determination methods frost resistance
• GOST 17624-2012Concrete. Ultrasonic method for determining strength
• GOST 32955-2014Public roads. Road drainage trays. Technical requirements

page 1

page 2

page 3

page 4

page 5

page 6

page 7

page 8

page 9

page 10

page 11

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE

STANDARD

Roads for public use ROAD DRAINAGE TRAYS Control methods

Official publication

Standardinform

Preface

The goals, basic principles and basic procedure for carrying out work on interstate standardization are established by GOST 1.0-92 “Interstate standardization system. Basic provisions" and GOST 1.2-2009 "Interstate standardization system. Interstate standards, rules and recommendations for interstate standardization. Rules for development, acceptance, application, updating and cancellation"

Standard information

1 DEVELOPED by Progress Stroy Limited Liability Company (Progress Stroy LLC)

2 INTRODUCED by the Interstate Technical Committee for Standardization MTK 418 “Road Facilities”

3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (protocol dated December 5, 2014 No. 46).

Short name of the country according to MK (ISO 3166) 004-97 Country code according to MK (ISO 3166)004-97 Abbreviated name of the national standardization body Azerbaijan Azstandard Ministry of Economy of the Republic of Armenia Belarus State Standard of the Republic of Belarus Kazakhstan Gosstandart of the Republic of Kazakhstan Kyrgyzstan Kyrgyzstandard Moldova-Standard Rosstandart Tajikistan T ajikstandard Turkmenistan Main State Service "Turkmenstandartlary" Uzbekistan Uzstandard Ministry of Economic Development of Ukraine

4 By order Federal agency on technical regulation and metrology dated August 14, 2015 No. 1160-st interstate standard GOST 32956-2014 put into effect as a national standard Russian Federation from December 1, 2015

5 INTRODUCED FOR THE FIRST TIME

Information about changes to this standard is published in the annual information index “National Standards” (as of January 1 of the current year), and the text of changes and amendments is published in the monthly information index “National Standards”. In case of revision (replacement) or cancellation of this standard, the corresponding notice will be published in the monthly information index “National Standards”. Relevant information, notices and texts are also posted in information system for general use - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet

© Standardinform, 2015

In the Russian Federation, this standard cannot be fully or partially reproduced, replicated and distributed as an official publication without permission from the Federal Agency for Technical Regulation and Metrology

Editor AL. Bakanova Technical editor V.N. Prusakova Corrector M.S. Kabashova Computer layout P.A. Circular

Delivered for recruitment on December 15, 2015. Signed for publication on December 18, 2015. Format 60x84%. Arial typeface. Uel. oven l. 1.40. Academic ed. l. 0.95. Circulation 38 copies. Zach. 4208.

Published and printed by FSUE STANDARDINFORM, 123995 Moscow, Granatny per., 4. www.gostinfo.ru [email protected]

GOST 32956-2014

1 Application area...................................................1

3 Terms and definitions...................................................2

4 Safety and environmental requirements...................................2

5 Requirements for test conditions....................................................2

6 Monitoring the accuracy of measurement results...................................3

7 Control of geometric parameters and dimensions...................................3

8 Control appearance and surface quality........................4

9 Control of strength and crack resistance of trays and gratings....................................5

10 Determination of the strength of structural materials................................5

11 Determination of the volume of entrained air in a concrete mixture....................................6

12 Determination of frost resistance of a structural material...................................6

13 Determination of the waterproofness of a structural material...................................6

14 Determination of water absorption of structural material.................................6

15 Determination of abrasion of a structural material...................................6

16 Determination of specific effective activity of natural radionuclides..........6

17 Reinforcement quality control...................................................6

INTERSTATE STANDARD

Roads for public use ROAD DRAINAGE TRAYS

Control methods

Automobile roads of general use. Road drainage trays. Methods of testing

Date of introduction -2015-12-01 with the right of early application

1 area of ​​use

1.1 This standard applies to drainage trays made of concrete (reinforced concrete) and polymer concrete (hereinafter referred to as trays), used on public roads, and establishes methods for monitoring the technical parameters of trays established by GOST 32955.

1.2 This standard does not apply to methods of industrial technological control in the manufacture of trays, as well as to methods of control of the initial raw materials used for the manufacture of trays.

Note - Industrial technological control in the manufacture of trays is carried out on the basis of the manufacturer’s production documentation, and control of the initial raw materials used for the manufacture of trays is based on the relevant standards and technical specifications for these materials.

2 Normative references

This standard uses references to the following interstate standards: GOST 12.1.007-76 System of occupational safety standards. Harmful substances. Classification and general safety requirements

4 Safety and environmental requirements

4.1 When carrying out tests and measurements, you must comply with the electrical safety rules in accordance with GOST 12.1.019 and the operating instructions for the equipment.

4.2 When working with trays, use protective clothing in accordance with GOST 12.4.131 or GOST 12.4.132. To protect hands, gloves are used in accordance with GOST 20010 or GOST 28846.

4.3 Samples destroyed during testing are disposed of as solid construction waste corresponding to hazard class no higher than IV according to GOST 12.1.007, unless otherwise specified by the manufacturer in the accompanying documents or on the packaging.

4.4 After measurements, trays selected for control of shape and size in accordance with the requirements of Section 7 and/or for control of surface quality in accordance with the requirements of Section 8 can be used to control other indicators.

5 Requirements for test conditions

5.1 The rooms in which measurements and tests are carried out must have an air temperature of (25 + 10) °C.

5.2 Assessment of the appearance and surface quality of trays is carried out in natural daylight or artificial lighting.

7.3.2 Trays selected for measurements are placed on a flat, cleaned surface, based on the conditions for ensuring free access to them when performing measurements.

7.3.3 The surface of the trays is cleaned wire brush and remove burrs and adhered particles that could interfere with measurements.

7.3.4 Measuring instruments are checked and prepared in accordance with the instructions for their use.

7.4 Measurement procedure

7.4.1 Measurements are carried out in accordance with the requirements of GOST 26433.0, GOST 26433.1 and this standard.

7.4.2 Measurements of external and internal dimensions The tray is made with a ruler or tape measure.

The length is measured on the external and internal horizontal surfaces, as well as on the lateral external and internal vertical surfaces at a distance of 10 mm from the upper (lower) horizontal and vertical surface of the tray.

The width is measured at both ends of the tray on the external and internal horizontal surfaces at a distance of 10 mm from the upper and lower horizontal surfaces.

The height is measured on external and internal vertical surfaces at a distance of 10 mm from both ends.

7.4.3 Deviation from straightness is controlled along the front edges of the tray by measuring the deviations of the edge of the face from a conventional straight line - a straight edge laid on the edge of the tray.

7.4.4 Deviation from perpendicularity of the tray edges is checked using a calibration square and a wedge probe or a set of probes.

When carrying out measurements, the test square is applied with its short side to the surface of one of the faces being checked for perpendicularity so that its other side is in maximum contact with the mating face. The maximum gap is measured using a wedge feeler gauge or a set of feeler gauges.

When measuring deviations from perpendicularity of the faces of the front surface, as well as the base and vertical walls of the tray, measurements are taken from both edges of the tray at a distance of 10 mm from the ends and in the middle of the tray.

When determining the perpendicularity of the end faces, measurements are taken in the middle part of the vertical walls.

7.4.5 The flatness of the faces of the front surface of the tray is controlled by measuring the gaps between a conventional straight line - a straight edge applied along the diagonals of each face being checked, and the surface of this face.

7.4.6 The measurement results are recorded in the test log. In this case, all dimensions and deviations are indicated with an accuracy of 1 mm.

7.5 Processing of measurement results

The actual values ​​of the geometric dimensions and shape parameters of the trays calculate the arithmetic mean value of the measurement results.

7.6 Registration of measurement results

Test date;

Name of the organization that conducted the tests;

Name and nominal values ​​of the controlled parameters for which the measurements were performed;

Actual values ​​of monitored parameters and their deviations from nominal parameters.

8 Control of appearance and surface quality

8.1 Requirements for measuring instruments and auxiliary devices

When performing measurements, the following measuring instruments and auxiliary devices are used:

Metal measuring ruler according to GOST 427;

Magnifying glass with a measuring scale with a division value of 0.05 mm according to GOST 25706;

Use a wire brush to clean the surface of the tray.

8.2 Control methods

8.2.1 Assessment of conformity of appearance, including the absence of oil and rust spots on the front surface, etc., performed visually.

8.2.2 Quality control of the surface of trays is carried out through observations and measurements of controlled indicators and defects.

8.3 Preparation for testing

Preparation for testing is carried out in accordance with 7.3. For testing, samples selected to control the shape and size of the trays are used.

8.4 Control procedure

8.4.1 The presence of technological defects on the surface of products in the form of cracks, cavities and sagging, as well as damage in the form of chipped ribs, is checked visually. At the same time, products that have the indicated defects are noted.

The opening width of surface cracks is measured using a magnifying glass with a measuring scale, and the length of cracks is measured using a measuring ruler.

8.4.3 The results of measurements of the sizes of shells and sagging, chips of ribs and the length of cracks are recorded with an accuracy of 1 mm, and the width of the opening of cracks - with an accuracy of 0.1 mm.

8.5 Processing of test results

8.5.1 Compare the sizes of shells, beads and the depth of chips of the ribs with acceptable values.

Calculate the total length of chips per 1 m of each edge of the tray and compare with the permissible ones

values.

8.5.2 Count the total number of cracks on each individual surface and determine their number per 1 m2 of each surface of the tray.

8.6 Registration of test results

The test results are drawn up in the form of a protocol, which must contain:

Test identification number;

Date of the test;

Name of the organization that conducted the test;

Test results.

9 Control of strength and crack resistance of trays and gratings

9.1 Load testing of trays to control their strength and crack resistance is carried out in accordance with GOST 8829 and the diagram given in the working drawings, taking into account the requirements of this standard.

9.2 Load testing of concrete and reinforced concrete trays is carried out after the concrete trays have reached a strength corresponding to the standardized class of concrete for compressive and tensile strength in bending.

Testing of trays with the tempering strength of concrete should be carried out no earlier than 4 hours and no later than 2 days after the end of the heat and moisture treatment.

9.3 Load testing of polymer concrete trays is carried out after the polymer concrete trays reach the standardized compressive and tensile strength in bending, but not earlier than 7 days after their manufacture.

9.4 It is allowed to use for testing trays that have cavities, local sagging and chipping of ribs in excess of those permissible according to GOST 32955, if these surface defects do not have a significant effect on the strength and crack resistance of the trays.

9.5 The values ​​of the control (test) load when testing trays for strength and crack resistance are taken in accordance with GOST 32955.

9.6 Trays of types 2 - 4 are installed on concrete base or placed in a concrete lining, which is made in accordance with the requirements of the design documentation.

9.7 Loading the tray during testing is carried out in stages. The share of the load of each stage should be no more than 10% of the control load, and the share of the last two stages should be no more than 5%.

After applying each stage of the control load, the tray is kept under load for at least 10 minutes, and after applying the full control load - for at least 30 minutes.

9.8 The width of the cracks is measured in the places of their greatest opening in accordance with GOST 26433.1 using a magnifying glass with a measuring scale with a division value of 0.05 mm.

9.9 Load testing of gratings to control their strength is carried out in accordance with GOST 3634. The control (test) load values ​​are taken according to GOST 32955.

10 Determination of the strength of structural materials

10.1 The compressive and tensile strength of concrete in bending is determined according to GOST 10180 on a series of samples made from a concrete mixture of the working composition and stored under conditions in accordance with GOST 18105.

It is allowed to determine the actual strength of concrete trays using the ultrasonic method in accordance with GOST 17624 in places specified in the working drawings, using mechanical non-destructive testing methods in accordance with GOST 22690

10.2 The compressive and tensile strength of polymer concrete during bending is determined according to GOST 10180 on a series of samples made from a polymer concrete mixture of the working composition.

11 Determination of the volume of entrained air in a concrete mixture

The volume of entrained air in the concrete mixture used for the manufacture of concrete and reinforced concrete trays and lining is determined according to GOST 10181 or according to the requirements of national standards operating in the territory of the states that voted for the adoption of the standard.

12 Determination of frost resistance of structural material

12.1 Frost resistance of concrete is determined according to GOST 10060 or according to the requirements of national standards in force in the countries that voted to adopt the standard, using a series of samples made from a concrete mixture of the working composition and stored under conditions in accordance with GOST 10180.

12.2 Frost resistance of polymer concrete is determined according to GOST 10060 or according to the requirements of national standards in force in the countries that voted to adopt the standard, using a series of samples made from a polymer concrete mixture of the working composition.

13 Determination of the water resistance of a structural material

The water resistance of concrete and polymer concrete is determined according to GOST 12730.0, GOST 12730.5

14 Determination of water absorption of structural material

Water absorption of concrete and polymer concrete is determined according to GOST 12730.0, GOST 12730.3 on a series of samples made from a concrete or polymer concrete mixture of the working composition.

15 Determination of abrasion of a structural material

The abrasion of concrete or polymer concrete from which the trays are made is determined according to GOST 13087.

16 Determination of specific effective activity of natural

radionuclides

The specific effective activity of natural radionuclides and materials is determined according to GOST 30108.

17 Reinforcement quality control

17.1 Quality control and testing of welded reinforcement and assembly-butt products is carried out in accordance with GOST 10922 and GOST 23858.

17.2 The position of the reinforcement products in the products, the thickness of the protective layer of concrete up to the reinforcement is determined according to GOST 17625 or GOST 22904 in the places indicated in the working drawings.

In the construction of buildings, roads, bridges, tunnels, there is a need to arrange heating mains, stormwater systems, sewer canals, laying electrical cables and other engineering structures. This requires durable quality materials, which are reinforced concrete trays.

The use of such structures ensures the resistance of various communications to negative environmental factors.

Technical characteristics of trays

Reinforced concrete trays are a universal structure designed for arranging the area around buildings, park areas, creating a storm drainage system, laying an underground heating main, laying cables, protection of communications from influence external factors and other things.

1.1 GOST requirements

Since on this design a very large “responsibility” is assigned for the durability and correct functioning of certain systems; they are manufactured exclusively at special enterprises and must fully comply with GOST requirements.

Reinforced concrete trays are made from reinforced concrete with a density of at least 2400 kg/m 3 from cement grade M250 and higher.

To produce these structures, vibration casting or vibration pressing technology is used, which ensures maximum strength of the product, as well as its resistance to temperature changes, mechanical and chemical influences.

For production, class A-I-A-III reinforcement with a cross-sectional diameter of at least 6 mm is also used, in accordance with GOST requirements.

Finished reinforced concrete trays must comply operational characteristics, prescribed in the GOST rules:

• 0-83;
• 26633-91;
• 10922-90;
• 1-81;
• 21509-76.

Each product, in accordance with GOST requirements, must have a certain marking, based on its purpose:

• LR – trays designed for installation on piles, slabs and other elevations;
• LRG – products that will be laid in the ground.

The numbers involved in the marking indicate the height of the side wall of the product in decimeters.

After manufacturing, reinforced concrete trays are thoroughly checked for compliance with the following requirements of GOST 13015.0-83:

• actual strength of concrete in the finished structure;
• quality and compliance with the standards of materials used in production;
• compliance with water resistance requirements;
• resistance to temperature changes;
• compliance of materials and the finished product with the requirements for use in groundwater and aggressive soil environments;
• compliance with GOST requirements for the shape, cross-sectional diameter, reinforcement coefficient and correct position in relation to the external planes of the reinforcement;
• grade of steel that was used for reinforcement and installation of mounting loops;
• compliance with the requirements for the thickness of the protective layer of concrete;
• compliance with GOST standards of pouring technologies and forms used for pouring concrete.

In addition, the GOST rules prescribe clear dimensions of a particular product.

The length and width of the trays can vary from 25 cm to 6 meters, the height of the gutter wall from 6 to 160 centimeters, weight - from 25 kg to 3-4 tons.

2 Types of JBL

GOST regulates not only the sizes, but also the shape of trays. Depending on the scope and characteristics of the application, trays can have a rectangular, trapezoidal or semicircular cross-section.

1. Trays of square or rectangular cross-section are used mainly for laying various pipelines underground (heating mains, water pipelines, electrical or communication cables). They act as a casing that protects the pipeline or cable from negative impacts external environment. The casing elements are laid end to end. The joints are coated cement mortar grade M-50 and higher. After the solution has dried, the structure is waterproofed with any waterproofing agents.
2. Trapezoidal concrete drainage trays usually used in the construction of roads and bridges, namely, the arrangement of drainage and storm sewerage. During installation, culvert trays are inserted into grooves and drawn into one common channel from the top drainage point down the slope. Thanks to this joining method, they are called telescopic or prefabricated. Open areas, in particular, the entry point of the storm drain is covered with a grate.
3. Semicircular or parabolic trays are also used for storm sewerage, drainage and drainage. They have a more aesthetic appearance, so they are more often found on local areas and in park areas. Culvert systems are closed with steel or cast iron grate. Its task is to provide additional aesthetics and provide rough filtration of storm water from large debris.

2.1 Advantages of using ZBL

Inexperienced or lazy builders believe that a gutter, for example, for a storm drain can be filled with their own hands directly on construction sites.

The idea is not without common sense, but it is worth understanding that in this case it will not be possible to meet all the requirements. Consequently, the product will last much less and will not be able to fully perform the tasks assigned to it.

1. Create a protective casing against moisture and further corrosion. Concrete concrete products are used for laying various utility networks, including heating mains, gas pipelines, electrical networks. The ingress of moisture and contact with the aggressive environment of such communications can lead to unpredictable tragic consequences. Laying utility networks in a reinforced concrete casing completely solves this problem.
2. Protection from aggressive chemical environments. Soils often contain various chemically active elements. In addition, they can enter the soil from outside. ZhBL, according to GOST, are treated with special compounds, therefore they are able to withstand chemically active environments.
3. Tightness. Housing made of reinforced concrete for underground laying heating mains or electrical networks is completely sealed. This ensures absolute protection from groundwater.
4. Resistant to temperature changes. Due to this property, reinforced concrete trays can be used both outdoors and underground, as well as for arranging storm drains without fear of destruction of the material during severe frosts or sudden temperature changes.
5. Ease Maintenance and replacement of individual elements. The design of the reinforced concrete block is designed in such a way that replacing individual elements of the channels does not require special equipment, skills and large quantity time.

2.2 Scope of application of reinforced concrete

The general array of reinforced concrete trays is divided into three main subgroups according to the scope of application:

1. Drainage trays are used for arranging water channels, drainage, sewer and collector systems. They are widely used both in the construction of residential buildings and park areas, and to create drainage systems from automobiles and railways, bridges, etc. Such trays are usually supplied complete with a filtration grid.
2. Reinforced concrete trays for heating mains. These structures act as casings to protect heating mains, pipelines with hot water and steam from contact with melt and groundwater, aggressive environments and, as a result, prevent the occurrence of corrosion.
3. Trays for laying cables. Designed for protected installation, especially underground, of electrical and communication cables.

1032 Views

Concrete drainage trays are one of the most necessary parts in the construction and organization of systems for draining rainwater from buildings and in the organization of cable systems. Let's look at what types of trays there are and how they are used.

Types and purpose

The strength and durability of concrete structures is ensured by the quality and water resistance of the brand of concrete that is used to fill the form. That is why the trays are based on a mixture of a grade no lower than M-200. In addition, the base is made of class A reinforcement rods or Bp-I grade wire base. The quality of the finished product is regulated by the requirements of GOST 21509-85.

Here are the main parameters that are specified in GOST:

• moisture resistance and ability to withstand frost;
• resistance to corrosion of metal parts and fittings;
• thickness and density of the concrete layer;
• general characteristics of the concrete mixture;
• resistance of the finished product to mechanical stress;
• the presence of voids in the cavity of the product.

Depending on the ratio of all the above parameters, there are three directions for using concrete drainage trays:

• drainage - function;
• for laying cables;
• to protect the heating main.

Let's take a closer look at drainage trays

From the name of the product it is clear that they are used to organize drainage systems and drains. Functions performed by these products:

1. Providing drainage, that is, removing excess moisture from the surrounding soil.
2. Moisture redistribution. Removing water from the road surface and transporting it to the side of the road or slopes.
3. Organization of channels for water outflow.
4. Ensuring the outflow of storm water.
5. Sewage function - connections of drainage systems with collectors.

Types of drainage trays

In accordance with GOST, there are three main types:

• in the form of a trapezoid;
• in the form of the letter P;
• in the form of a parabola.

At the same time, the first and second types can be either with a flat, flat internal base, or in the form of a round gutter.
All the main characteristics, as well as the scope of their application, can be found out from the markings. It is especially important to study the markings when constructing or installing pipelines in difficult natural conditions. For example, when laying tracks in soil subject to seasonal fluctuations: swampy terrain, the presence of a clay layer, the presence of groundwater.

This also includes work that is carried out in the far north. The most important requirement here is resistance to low temperatures.
Drainage trays are marked with the letter L, and two numbers indicate the series number and the maximum vertical load.

For ease of installation, trays come in two types: prefabricated and integral.
Common models: length ranges from 0.72 meters to 6 meters, width from 0.4 meters to 1.84 meters, edge height from 0.38 meters to 1.32 meters.

Concrete trays for the construction of heating mains

The main purpose of these trays is to reliably protect the pipeline from corrosion, reduce heat loss and protect pipes from rodents. For sewerage and heating mains I use two types of trays:

• GOST Klp - these trays are covered with removable lids;
• GOST Kls - connection using channel fasteners.

The advantage of concrete trays over their brick counterparts:

• saving time and effort during installation due to the simplicity and integrity of the structure;
• significant cost reduction due to reduction of consumables;
• significant superiority in load-bearing capacity;
• ability to withstand sudden temperature changes and soil fluctuations.

Groundwater resistance

For the use of sewer trays, the letter K is indicated, and for heating mains, the letter L.
Let's compare the cost of different concrete trays.
When buying a tray, you need to analyze in detail all the parameters of the product you have chosen: load, dimensions, assembly method and availability of a certificate.

The average price for one LK type tray measuring 350 mm by 350 mm and 2970 mm will be 1,700 rubles. It can be used to provide drainage systems. For example, during the construction of highways or bridges.
Product L 2-8\2 with parameters 360 mm by 570 mm and 2970 mm will cost 2450 rubles. These trays are wider and are ideal for the construction of drainage systems for walking paths and drainage of rainwater from residential buildings.

LK 300. 4 5.30-1, has the following dimensions: 280 mm by 430 mm and 2990 mm. The price of this tray will be 3315 rubles. Such products are ideal for installing heating systems and laying cables.
The most expensive option is L 10-8\2 with parameters of 550 mm by 1480 mm and 2970 mm. The cost of this product is 6600 rubles.