Tray l4 8 dimensions volume. Heating main trays. Concrete channels and tunnels

At all. This makes it possible to produce heating main trays of grade L 4-8 4 with a high degree of reliability and with excellent characteristics duration of operation. Do not forget that such requirements apply to reinforced concrete products of this class for a number of justified reasons. Firstly, and this is most important, the need to provide utilities hidden deep underground reliable protection. Secondly, the slow destruction of communications is impossible to predict - they are hidden from inspection. And, finally, the high cost and complexity of carrying out land and restoration work if necessary, especially in winter.

Heating main trays of grade L 4-8 are found as much as possible effective application as structural elements when designing channels KLp 60x45 KL 60x45. Their performance characteristics allow their use when the route lies at great depth and when there is an abundance of groundwater. The dimensions that characterize heating main trays of brand L 4 8 4 are as follows: 2970x780x530 in external dimensions, that is, length, width and height, respectively. The trays weigh 900 kilograms, which allows them to be installed without the use of heavy lifting and special equipment.

Our company’s specialists tirelessly monitor compliance at the manufacturing plant with all regulations and production standards, as well as careful adherence to the established work technology. This allows us to supply products to the market, in particular, heating main trays of brand L 4 8 4 High Quality at a more than reasonable price.

You can order heating main trays brand L 4-8 4 and consult on reinforced concrete products by calling the numbers listed at the top and bottom of the site, call!

Heating main trays, grade L 4-8 2

One of the most common structural elements in the construction of water drainage systems without deepening the drainage main are heating main trays of grade L 4-8 2. Features of their manufacture, which include the complexity and multi-stage nature of conveyor production reinforced concrete products represent a number of complexes necessary to ensure maximum economic profitability of the use of materials while maintaining the necessary technical characteristics. The special approach given to the production of heating main trays such as L 4 8 2 allows the use of this multi-purpose product without fear for the effective operation time and reliability of each element of the water drainage system. The trays are highly resistant to corrosive influences, the influence of microorganisms on the structure of concrete and the effects of aggressive environments, including the organic components of these environments. Also, heating main trays of grade L 4-8 2 are widely applicable in the construction of underground communications serving as the location engineering structures of various kinds: from heat pipelines to communication cables.

It is worth noting that reinforced concrete, based on the production scheme, is a material with high porosity, sufficient for plant organisms to settle in microcavities, which, when growing, disrupt the surface structure of the product, which can lead to irreversible consequences for most communications. That is why the production cycle of such reinforced concrete products as heating main trays of grade L 4-8 2 includes bench operations with mandatory vibration treatment of the composition and ironing of the surface. This technology allows the product to provide maximum resistance to water, air and organic erosion.

Heating main trays of brand L 4-8 2 are characterized by the following overall dimensions: 5970x780x530 millimeters. Thanks as much as possible effective use starting materials The trays are light in weight. Thus, heating main trays of grade L 4-8 2 have a standardized weight of 1800 kilograms, which allows their installation using small-scale mechanization.

When choosing a manufacturer and supplier of reinforced concrete products, it is important to pay attention to the features of their production at a factory or landfill and transportation conditions. Our specialists constantly monitor compliance regulatory technology production of reinforced concrete, products made from it and the conditions for their further transportation. This ensures that heating main trays of brand l 4-8 2 are in full compliance with GOST 13015 standards. We are directly interested in supplying you with high quality with appropriate performance indicators.

You can order heating main trays brand L 4-8 2 and get advice by calling the numbers listed at the top and bottom of the site, call!

Reinforced concrete trays L 4-8 for heating mains are special multifunctional products that are widely used in most areas of construction: household, road, railway, industrial, residential, etc. The trays are used in the laying of pipelines, heating mains, installation of cold and hot water supply, in the construction of gas outlet and drainage structures and drainage systems, drainage channels, as well as in power supply when laying electrical cables and other communications.

Reinforced concrete trays L 4-8 for heating mains are a prefabricated open structure with a bottom and two sides located opposite each other, the cross-section of the tray is made in the shape of the letter “P” or “U” with rounded corners. A floor slab is installed on top of the tray to provide access to the contents of the tray, additionally ensuring the tightness of the structure, protecting the contents from moisture. This solution simplifies Maintenance and repair of pipeline systems - in order to get into the pipeline compartment required for inspection or repair, it is enough to dismantle the slab. Also, in the construction of heating mains, the slab does not allow air to leave the tray, retaining heat.

Reinforced concrete trays L 4-8 for heating mains are structures that are completely ready for installation in the ground. The technology for laying trays is quite simple: the products are laid in a pre-prepared earthen trench, which is a dug trench (in the case when construction is planned at a facility located on soft soils, the earthen trench is filled with a sand cushion or a special concrete cushion is installed), and they are mounted on top reinforced concrete slabs ceilings The following design option is also possible: first the slabs are laid, then the trays are installed on them upside down.

Reinforced concrete trays L 4-8 for heating mains are one of the most functionally necessary components in construction when laying heating mains, electrical and other types of wiring in conditions in which existing communications are threatened mechanical damage during operation. Simplicity of design, ease of maintenance and durability of trays are just a few reasons that indicate the advisability of using reinforced concrete products. Concrete trays are equipped with high-strength steel, which allows the products to withstand significant loads and maintain their original properties throughout the entire period of operation. The surface of the trays is covered with special water-repellent and anti-corrosion mixtures. One of the main advantages can also be called low cost raw materials, which, given the durability of structures, significantly reduces construction costs.

Trays L 4-8 for heating mains are made only from heavy concrete with compressive strength classes B15, B25, B30 and B35. The class of concrete for frost resistance and water resistance depends on the hydrogeological conditions of the proposed construction site, as a rule, from F50 and W2, respectively. To increase durability and wear resistance to aggressive environments, concrete for trays is treated polymer compounds. The trays are reinforced with welded frames and steel meshes classes A-I, A-III and ВрI. Depending on the projected load, hot-rolled or prestressed steel is prepared. All metal elements additionally undergo anti-corrosion treatment.

Reinforced concrete trays L 4-8 for heating mains are concreted in a horizontal position with the walls down. To remove products from the formwork in the walls of the trays, stripping slopes are provided in relation to at least 1/15 of vertical axis. Mounting loops are provided for slinging the trays when removing them from the formwork. The trays are removed from the formwork after the concrete reaches 70% of its design strength.

Trays L 4-8 for heating mains are tested for strength using a non-destructive method in accordance with GOST 8829-85 “Methods for testing and assessing strength, rigidity and crack resistance”. To ensure reliable joining of the tray and slab, you should follow following conditions: the maximum permitted deviation of the straightness of the profile over the entire surface of the product should be no more than 8-10 mm. In this case, exposure of the reinforcement is strictly prohibited. Sinks, depressions and sagging on the surface of products should not exceed 3-6 mm in diameter.

Reinforced concrete trays L 4-8 for heating mains must be stored in stacks. The height of the stack is determined from the condition of ensuring safety requirements and in accordance with SNiP III-4-80 “Safety in Construction” and should be no more than 2.5 m. Wooden spacers with a thickness of at least 3 cm are required to be installed at the same distances from the ends of the elements , as the mounting loops, as well as in the places where the ribs of the trays join.

Where to buy tray L4-8?

Tray dimensions L4

Price

Tray of heating mains L 4

Concrete bracket for laying pipes and cables - a tray for heating mains, serves to protect pipes from corrosion under the influence of groundwater and to reduce heat loss during transportation hot water. Trays soften temperature changes and solve the main problem - to protect the pipeline from any external influences, maintaining its integrity. A packaged utility duct that provides the best insulation - a combination of tray and cover slab.

The U-shaped tray is used everywhere and is considered one of the most popular reinforced concrete products, so manufacturers, in a competitive environment, try to produce high-quality and durable products. For the production of trays, only high-quality grades of heavy concrete M200-M300 (B20 and higher) are chosen, which can resist constant exposure to moisture and temperature changes. In addition, mechanical strength is no less important for the tray, since the channels experience soil pressure along the sides of the tray; for this, heating main trays are carefully reinforced and divided into “endurance” classes. That is why concrete trays L 4 are able to work even in seismic regions (up to 9 points inclusive).

It’s not for nothing that the IS-01-04 series describes trays as universal reinforced concrete products. Many years of operating experience confirms that reinforced concrete trays are capable of solving many engineering problems, for example, with their help, open private watercourses are constructed, storm drains, collectors, drainage systems And so on. Tray shapes for solution different tasks differ - small trays are elongated, and larger ones are approximately the same in length and width. Flat lids P, PT are produced rectangular, and large PO covers can have manholes for servicing channels. L 4 trays can also work upside down, that is, instead of a floor slab, a PD bottom plate is used.

The ability to reduce costs, and most importantly, time and effort for installing channels and drainage systems, is the main reason for the popularity of common standard sizes of trays. A one-time installation of a channel protects your communications for decades to come, so purchasing quality products is a good foundation for the future. The variety of sizes of reinforced concrete trays ensures that you will find the required reinforced concrete tray, designed specifically for your project.

Reinforced concrete trayscable provide communications with operational properties: seismic resistance, resistance to ground movements, waterproofing and protection from the penetration of animals and strangers. But it is worth noting that this is a merit not only of the correctly selected reinforced concrete tray and lid, but also of the insulating coating.

Dimensional tray sizes The width ranges from 760 to 2380 mm, and the height ranges from 370 to 730 mm. The unified length of the tray is 2970 mm. The weight of tray L 4 is 1050 kg. The weight of the tray allows it to be well secured in the foundation pit and avoid shifting.

Modern formworks make it possible to produce traysdrainage any size. In addition, from our company you can order reinforced concrete trays manufactured according to your requirements. These can be especially frost-resistant trays, or trays with a high class of corrosion protection and reduced permeability of concrete, especially strong trays with “thick” reinforcement, etc. Reinforced concrete hydraulic trays are also selected for various laboratory studies.

Operation of the trays is possible in any climatic conditions, minimum permeability of concrete class W4. However, ordinary concrete trays L 4 are not suitable for working in aggressive environments; for this you need to buy reinforced concrete trays made on the basis of sulfate-resistant Portland cement. A high frost resistance class (F50 and higher) helps the tray to withstand regular temperature changes characteristic of the Russian climate. Such concrete does not crack or crumble, despite many freeze-thaw cycles.

Such properties are given to the tray concrete by special chemical additives with plasticizing and air-entraining properties. The price of the trays does not change much depending on the presence of additives, but they help the heating main tray to become waterproof and frost-resistant, but do not allow the trays to subsequently be used for transporting drinking water.

Reinforced concrete trays for heating mains L 4 are designed for laying pipelines for various purposes. The structures of channels and tunnels made from tray elements can be used not only under normal conditions, but also in the presence of groundwater and on subsiding soils.

Undoubted advantage heating mains mounted from industrial trays and slabs are the speed of installation, practicality of operation and, of course, price. Channels made of prefabricated reinforced concrete elements are easy to repair and maintain, since it is enough to just excavate the heating main and easily remove the covers, while the heating main trays themselves remain in service long years. When tray service life is coming to an end and is very easy to dismantle, unlike monolithic structures.

Design tray drawings reinforced concrete you can find in the standard series IS-01-04 “Unified prefabricated reinforced concrete channels”. Release 2 of the series defines the production of reinforced concrete trays, which then become part of tunnels, canals and heating mains. The popularity of trays has been maintained for many decades; the designs of trays have been time-tested.

Today reinforced concrete trays series IS-01-04 are used for repair and reconstruction of existing heating main systems, as well as for laying new communication channels in cities and small towns populated areas. The use of trays in underground channels requires a tray cover, which is welded to the embedded products and seals the channel. Thus, a “ air bag", which, due to the natural thermal insulator - air, helps maintain the temperature of the transported substances. Besides, tray covers help keep the channel dry and reliably protect pipes from corrosion. The tray covering slabs are also designed in the IS-01-04 series. It is possible to complete industrial, energy and civil construction projects with trays and coating slabs in a short time using our website. With us you can buy trays series IS-01-04 issue 2 affordable prices with delivery to your facility. The geography of supplies of reinforced concrete products covers the entire territory of Russia.

Series IS-01-04 Issue 2. “Prefabricated reinforced concrete elements” contains working drawings and reinforcement diagrams for trays, and also defines the areas of operation of this type of reinforced concrete products. Currently, Series IS-01-04 has been replaced by series 3.006-2, whose products are also used for laying underground and above-ground channels.

Reinforcement of reinforced concrete trays

Moderate reinforcing steel is used as the basis for frames and welded flat meshes. flexibility A-I and A-III, which is pre-protected from corrosion. The thickness of the protective layer of concrete tray is 15-20 mm, depending on the thickness of the product. This layer reliably hides the steel “filling” and increases the safety of the product. Fluctuations in the thickness of the concrete layer are undesirable, the permissible deviation is no more than +5 mm. For embedded elements, rolled steel St3 is selected. The embedded parts of the trays are used for fastening cables, pipelines and other communications.

Reinforced concrete trays L 4 reliably protect various pipelines, heating mains, networks of electrical cables and electrical busbars laid through a variety of soil conditions. Thus, heating mains and channels from elements are installed both in ordinary soils, without groundwater and seismic influences, and on subsidence soils, and with an abundance of groundwater.

The pipeline especially needs durable channels in regions with increased seismic activity. After all, even with small shocks steel pipes, making up the highway, may become disconnected. And channels laid using trays and covers can withstand earthquakes up to magnitude 9.

Rectangular trays series IS-01-04 are fully protected from aggressive chemical exposure environments and groundwater, preventing premature corrosion.

A rectangular tray can be ordinary or additional (d), that is, its design does not have openings for joining with route nodes. Therefore, to create channels long distance with pipeline turns and merges, reinforced concrete trays with cutouts and holes, as well as corner trays are required. Lifting and installation of trays on sandy base 10 cm thick, according to safety regulations, is carried out using steel mounting loops.

Product marking

Accepted symbols trays consists of alphanumeric groups. Designate the type of construction, the serial number of the standard size. Additional elements are designated by the letter “d”.

For an example of brand decoding, consider a tray L 10(2970x2380x730 mm), where:

• L – channel of channels and tunnels;
• 10 – product size number.

The additional element for this tray will look like this: L 10d.

Markings are located on the side of the tray; in addition to the mark, the weight and date of manufacture of the reinforced concrete product are also indicated.

Product quality control

A durable and waterproofed communication channel or heating main should not have cracks or exposed reinforcement. Only shrinkage cracks are allowed on concrete surface tray (width no more than 0.1 mm).

A conscientious manufacturer, before starting mass production of reinforced concrete trays, conducts mechanical strength tests. Periodic testing of trays is carried out by exposure to equivalent destructive loads. In addition, there are laboratory tests concrete - its density, wear resistance, permeability and other characteristics. As a result of compliance with these requirements, reinforced concrete trays have highest category quality and maximum service life.

Each tray must correspond to its design dimensions for optimal joining with the bottom slabs or covering slabs. The length and width of the channel element can be 10 mm greater than the calculated one, and the height - by 7 mm.

In order for the joining of the tray and the slab to be better, the straightness of the profile must be maintained - curvatures are permissible by no more than 5 mm along the entire plane of the tray. Protective concrete layer must have a uniform thickness, that is, not deviate from the norm by more than 5 mm.

Product weight deviation is allowed within 7%. Welded frames and meshes should not be exposed under any circumstances. Embedded products must be carefully treated against corrosion.

Sinks, nodules and depressions in the concrete surface of reinforced concrete trays should not be more than 3-6 mm in diameter. Heating main trays L 4 are released to the consumer when the concrete reaches full strength. The releasing strength of the concrete tray is 70% in summer, 100% in winter.

On acceptance tests control the following parameters of tray elements:

• Appearance trays;
• concrete strength (class of concrete in terms of compressive strength, tempering strength);
• compliance of reinforcement and embedded products;
• strength of welded joints;
• thickness of the protective layer of concrete to the reinforcement;
• type hydrophobic and anti-corrosion protection trays;
• accuracy of overall dimensions;

A batch of trays L 4 must be accompanied by technical certificate , in which they indicate:

• grade of concrete in terms of strength and its average density;
• tempering strength of concrete and actual tempering density of concrete;
• concrete grade for frost resistance and water resistance;
• date of manufacture of products;
• number of reinforced concrete products;
• indication of conformity state standard And series IS-01-04.

Storage and transportation

Optimal storage of trays according to special scheme– in stacks of no more than three rows of products (depending on weight). Gaskets are installed in the locations of mounting loops, embedded products and holes. Covering slabs are also stored in stacks. Trays and slabs are transported by road and rail, subject to careful securing. Berezhnaya and fast delivery and our specialists will provide prompt solutions to problems of any complexity. Order, delivery and loading trays and coating slabs are carried out in a short time. WITH prices for trays and components you can find in our "Reinforced Concrete Products Directory". Remember that only correct unloading and delivery will ensure pristine appearance trays and suitability for use. Do not neglect safety precautions and rules for handling reinforced concrete products - use belts, gaskets and linings to secure the product.

The prices indicated on the website are for informational purposes only. The offer is not public offer. Please check with the sales department for the final cost.

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