The irrigation system, drainage of storm water and water of melting snow cover provides for a product - a reinforced concrete drainage tray. With the help of concrete trays and appropriate infrastructure, irrigation and drainage systems transport a useful or harmful product - irrigation or waste water to fields, storm or sewer collectors.

Types and sizes of reinforced concrete trays

There are two types of products for "transporting" water: Trays for irrigation systems and Trays for road drainage equipped with protective gratings. According to the name, the first type of products is used for the construction of irrigation systems for agricultural areas, and the second type for ensuring the rapid drainage of rain and melt water from highways, highways, city roads and pedestrian sidewalks.

The main characteristics and dimensions of trays for irrigation systems are regulated by GOST 21509-76 "TRAYS FOR REINFORCED CONCRETE IRRIGATION SYSTEMS", and the main characteristics and dimensions of products for completing drainage systems for roads and pedestrian crossings are regulated by the normative document GOST 32955-2014 "Road drainage trays".

Reinforced concrete drainage trays GOST 21509-76

Trays of this type are intended for the construction of irrigation systems designed for pumping water in an amount of up to 5 cubic meters per hour. The product is a reinforced concrete parabolic gutter of certain dimensions, which can be installed on supports or slabs, or laid in the soil.

Depending on the method of installation, trays for irrigation systems are labeled as LP or LRG. LP trays are installed on supports or slabs, and LPG products are placed directly into the soil.

An example of the designation of a reinforced concrete drainage channel of the LV series with a height of 400 mm: LV4. Reinforced concrete factories offer for sale the following types and dimensions of trays for the construction of irrigation systems, shown in Table 1.

Designation	Overall dimensions, mm				Weight, kg
	Length	Height	Width	Wall thickness
LR4	5980	400	908	50	1080
LRG4
LR6		600	1084		1420
LRG6
LR8		800	1240	60	1920
LRG8
LR10		1000	1804	75	3310
LRG10

Reinforced concrete drainage trays GOST 21509-76 are made of heavy, reinforced with steel reinforcement. To be able to be assembled into a single system and installed on supports (plates), each product is equipped with embedded products for welding and a parabolic recess for laying the seal.

Reinforced concrete drainage trays GOST 32955-2014

Products of this type are used to receive surface water for further direction to sewage systems. This refers to wastewater from roadways, pedestrian walkways, road shoulders, or soil surfaces.

At the same time, in accordance with the requirements of the regulatory document, the design of drainage products is a set - a reinforced concrete drainage tray with a grate made of cast iron.

The normative document defines the subsiding structural types of road drainage trays: box-shaped, slotted, open, rectangular, U-shaped, curb, ring and other types.

At the same time, trays can be manufactured both at precast concrete factories and delivered to construction sites ready for installation, or made directly at construction sites by pouring reinforced concrete.

GOST 32955-2014 does not regulate the rigid dimensions of reinforced concrete drainage road trays. Buyers are offered wide choose the dimensions of the trays, depending on the specific tasks and the length of the drainage line:

• Length from 400 to 4000 mm and more.
• Width from 500 mm and more.
• Height from 200 mm and more.

The specific dimensions of trays and grates may differ from GOST. In other words, the dimensions, configuration, types of road drainage trays and grids are negotiated in the projects of specific structures. As in the previous case, for the manufacture of road trays, heavy reinforced concrete of the M300 grade is used, prepared on cement grade not lower than CEM I 32.5N PC.

Conclusion

Drainage trays of road or irrigation systems, despite the apparent simplicity of the design, should be manufactured by specialized factories that have an appropriate material and technical base that allows them to produce products that meet the requirements of current regulatory documents.

To quickly remove thawed or wastewater, use special storm water inlets. But to increase the efficiency of water drainage, it is advisable to use drainage systems, which consist of concrete trays. Concrete drainage trays, the GOST of which fully meets all the requirements, are segments of a linear drainage system for removing waste or melt water from the main structures or objects that allow you to send water to the sewer.

The types of drainage trays are distinguished, depending on the raw materials from which they are produced. There are reinforced concrete, concrete and plastic trays.

As well as concrete drainage trays, the GOST of which is carefully observed by our company, are distinguished by their geometric shape. It can be parabolic, like the letter "P" or in the form of a trapezoid. Depending on where the drainage trays are used, there are edge trays, telescopic trays, as well as trays for a linear system.

There are two types of production of reinforced concrete and concrete drainage trays: vibration casting and vibration pressing, which is considered more efficient and less costly.

In the construction of buildings, roads, bridges, tunnels, it becomes necessary to equip heating mains, storm water systems, sewer canals, and electrical cables and other engineering structures. This requires durable high-quality materials, which are reinforced concrete trays.

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

Specifications trays

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

1.1 GOST requirements

Since this design has a very large "responsibility" for the durability and correct functioning of certain systems, they are manufactured exclusively at special enterprises and must fully comply with the requirements of GOST.

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

For the production of these structures, the technology of vibration casting or vibration pressing is used, which allows to ensure the maximum strength of the product, as well as its resistance to temperature extremes, mechanical and chemical influences.

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

Ready-made reinforced concrete trays must comply with the operational characteristics prescribed in the GOST rules:

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

Each product, in accordance with the requirements of GOST, must have certain markings, based on its purpose:

• ЛР - trays intended for installation on piles, slabs and other heights;
• LWG - 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 tested for compliance with the following requirements of GOST 13015.0-83:

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

In addition, the GOST rules prescribe the precise 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 is from 6 to 160 centimeters, and the weight is from 25 kg to 3-4 tons.

2 Types of reinforced concrete

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

1. Trays of square or rectangular cross-section are mainly used for laying various pipelines underground (heating mains, water pipes, electrical or communication cables). They play the role of a casing that protects a pipeline or cable from the negative effects of the external environment. The casing elements are stacked end-to-end. The joints are coated with cement mortar M-50 and higher. After the solution has dried, the structure is waterproofed with any waterproofing means.
2. Trapezoidal concrete drainage trays usually used in the construction of roads and bridges, namely, the arrangement of drainage and storm sewers. During installation, culverts are inserted into grooves and recruited into one common channel from the top of the drainage point down the slope. Thanks to this method of docking, they are called telescopic or prefabricated. Open areas, in particular the storm sewer entry point, are closed with a grating.
3. Semicircular or parabolic trays are also used for storm sewers, drainage and drainage. They have a more aesthetic appearance, therefore, they are more often found in adjoining territories and in park areas. The drainage systems are closed with a steel or cast iron grating. Its task is to give additional aesthetics and coarse filtration of storm water from large litter.

2.1 Benefits of using reinforced concrete

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

The thought is not devoid of common sense, however, it should be understood that in this case it will not be possible to withstand all the requirements. Consequently, the product will last much less and will not be able to fully perform the tasks assigned to it.

1. They create a protective casing against moisture ingress and further corrosion. Reinforced concrete products are used for laying various engineering 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. The laying of engineering networks in a reinforced concrete casing completely solves this problem.
2. Protection against aggressive chemical environment. Soils often contain various chemically active elements. In addition, they can fall into the ground from outside. ZhBL, according to GOST, are treated with special compounds, therefore they are able to withstand chemically active environments.
3. Tightness. Reinforced concrete casing for underground laying heating mains or power grids, it turns out to be absolutely sealed. This ensures absolute protection against groundwater.
4. Resistant to temperature extremes. Due to this property, reinforced concrete trays can be used both outdoors and underground, as well as for arranging storm sewers without fear of material destruction in severe frosts or sudden temperature changes.
5. Ease Maintenance and replacement of individual elements. The design of reinforced concrete structures is thought out in such a way that the replacement of individual elements of the channels does not require special equipment, skills and a large number time.

2.2 Scope of RCL

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, sewerage and collector systems. They are widely used both in the construction of residential buildings and park areas, and for the creation of drainage systems from automobile and railways, bridges, etc. These trays are usually supplied complete with a filter 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 underground waters, aggressive media and, as a result, prevent the occurrence of corrosion.
3. Cable trays. Designed for protected laying, especially underground, of electrical and communication cables.

Name:

Automobile roads for general use. Road drainage trays. Technical requirements

Active

Date of introduction:

Cancellation date:

Replaced by:

Text of GOST 32955-2014 Motor roads for general use. Road drainage trays. Technical requirements

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

INTERSTATE

STANDARD

Public automobile roads

DRAINAGE ROAD TRAYS

Technical requirements

Official edition

Rinform stand 2016

Foreword

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 "

Information about the standard

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

2 INTRODUCED by the Interstate Technical Committee for Standardization MTK418 "Road Facilities"

3 ACCEPTED by the Interstate Council for Standardization, Metrology and Certification (minutes of December 5, 2014 No. 46)

4 By order of the Federal Agency for Technical Regulation and Metrology of September 2015 No. 1294-st, the interstate standard GOST 32955-2014 was put into effect as a national standard Russian Federation from June 1, 2016

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, a corresponding notice will be published in the monthly information index "National Standards". Relevant information, notice and texts are also posted in information system general use - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet

© Standartinform. 2016

In the Russian Federation, this standard may not be reproduced in whole or in part. replicated and distributed as an official publication without the permission of the Federal Agency for Technical Regulation and Metrology

1 area of ​​use........................

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

4 Classification ...........................

5 Technical requirements .....................

6 Acceptance rules .........................

7 Requirements for safety and environmental protection.

in Transport and storage .................

9 Manufacturer's warranty .......................

INTERSTATE STANDARD

Automobile roads of general use TRAYS ROAD DRAINAGE TECHNICAL REQUIREMENTS

Automobile roads of general use. Drainage road trays.Technical requirements

Child of introduction - 2016-06-01 With early application right

1 area of ​​use

This standard applies to drainage road drainage gutters with a clear width of up to 1000 mm. including on road trays made at the site of work from monolithic concrete by concrete pavers with sliding formwork (hereinafter referred to as trays), mounted in traffic areas and in pedestrian areas to collect and drain water from the surface * of motor roads, as well as pedestrian zones. and establishes technical requirements for trays, their classification and requirements for safety, labeling, transportation and storage.

The standard also establishes technical requirements for stormwater grids (hereinafter referred to as grids), embedded products and other parts integrated into prefabricated and monolithic structures of gutters.

The requirements of this standard also apply to the elements of stormwater and sand-trapping wells, which are structural elements of linear drainage systems.

It is allowed to use drainage trays on improvement objects of other territories.

2 Normative references

GOST 977-88 Steel castings. General specifications

GOST 1412-85 Lamellar graphite iron for castings. Stamps

GOST 5264-80 Manual arc welding... Welded connections. Basic types, structural elements and dimensions

GOST 5582-75 Corrosion-resistant, heat-resistant and heat-resistant thin-sheet rolled products. Technical conditions

GOST 5781-82 Hot-rolled steel for reinforcing reinforced concrete structures. Technical conditions

GOST 6727-80 Cold-drawn low-carbon steel wire for reinforcing reinforced concrete structures. Technical conditions

GOST 7293-85 Nodular cast iron for castings. Stamps

GOST 8267-93 Crushed stone and gravel from dense rocks for construction work. Technical conditions

GOST 8736-93 Sand for construction work. Technical conditions

GOST 10178-85 Portland cement and slag colortland cement. Technical conditions

GOST 10884-94 Reinforcing steel thermomechanically hardened for reinforced concrete structures. Technical conditions

GOST 10922-90 Welded reinforcement and embedded products, welded joints of reinforcement and embedded products of reinforced concrete structures. General specifications

GOST 11534-75 Manual arc welding. Welded joints at sharp and obtuse angles. Basic types, structural elements and dimensions

Official edition

GOST 13015-2012 Reinforced concrete and concrete products for construction. General technical requirements. Rules for acceptance, marking, transportation and storage GOST 14192-96 Marking of goods

GOST 14918-80 Galvanized sheet steel from continuous lines. Specifications GOST 16523-97 Rolled sheet carbon steel of high quality and ordinary quality for general use. Technical conditions

GOST 18105-2010 Concrete. Rules for the control and assessment of strength GOST 19903-74 Hot-rolled sheet metal. Range GOST 19904-90 Cold-rolled sheet steel. Assortment

GOST 23279-85 Welded reinforcing meshes for reinforced concrete structures and products. General specifications

GOST 23732-2011 Water for concrete and mortar. Specifications GOST 26358-84 Iron castings. General specifications GOST 26633-2012 Heavy and fine-grained concrete. Technical requirements GOST 26645-85 Castings from metals and alloys. Dimensional tolerances, weights and machining allowances

GOST 30402-96 Building materials. Flammability test method GOST 31108-2003 General construction cements. Technical conditions

GOST 32703-2014 General use automobile roads. Crushed stone and gravel from rocks. Technical requirements

GOST 32730-2014 Motor roads for general use. Crushed sand. Technical requirements

GOST 32823-2014 Motor roads for general use. Natural sand. Technical requirements

GOST 33174-2014 Motor roads for general use. Cement. Technical requirements

Note - When using this standard, it is advisable to check the validity of the reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or according to the annual information index "National Standards", which was published as of January 1 of the current year, and on the issues of the monthly information index "National Standards" for the current year. If the reference standard is replaced (changed), then when using this standard, the replacing (modified) standard should be followed. If the reference standard is canceled without replacement, then the annex in which the reference to it is given is applied in honor, not affecting the reference atu.

3 Terms and definitions

The following terms are used in this standard with the corresponding definitions:

3.1 taphole (drainage, drainage): Prefabricated or monolithic structure, consisting of structural elements, designed to receive surface water along its entire length and direct it further into the drain.

Note - depending on the design solution, the structure of the trays can be rectilinear, curved, rvdius or connected at an angle.

3.2 surface water: Water flowing from the carriageway, shoulder, sidewalk, dividing strip of the motor road, as well as from buildings, structures or from the surface of the earth.

3.3 stormwater grate: A removable part of a box-shaped chute installed in the structure of the chute (stormwater well) to let water into it.

Note - Typical designs gratings are shown in Figure 1.

oh oh oh oh oh oh oh oh oh oh oh

Figure 1 - Typical designs of water intake grilles

3.4 stormwater well: Concrete chamber of various depths, designed for connection to stormwater systems.

Note - Storm water inlets, kvk, are usually used as a point drainage system.

3.5 sand pit: Concrete chamber of various depths, designed to collect line and other solid residues, as well as for connection to storm water systems. having the same design features as the trays to be connected to. The trash box is made of one or more vertically hermetically sealed parts.

3.6 garbage container (basket): A removable structural element of a gutter or a sand-collecting (stormwater) well, designed to collect and remove solid residues.

3.7 nominal tray width: Tray clear width is a design parameter corresponding to the maximum integer horizontal dimension of the tray in millimeters.

3.8 support surface of the tray: The surface on which the reinforcing nozzle, embedded parts are mounted or the water intake grate is laid in the tray.

3.9 reinforcing attachment: Structural element, made of metal, designed to protect the supporting and open surfaces of the tray from damage when vehicles move along them.

3.10 contact surface surface of a reinforcing nozzle or embedded part on which the water intake grill is laid in the tray

Note - Typical designs of reinforcing attachments are shown in Figure 2.

1 - reinforcing nozzle; a is the thickness of the vertical wall of the reinforcing nozzle. 2 - contact surface, d - sheet thickness under the contact surface; 3- water intake grill

Figure 2 - Typical designs of reinforcing attachments

3.11 damping pad: A pad of elastic, easily deformable material, laid on the contact surface of the nozzle or attached along the contour to the bottom surface of the water intake grate, serving to ensure the stable position of the grate in the tray.

3.12 grating depth correct location(flush with the adjacent surface) grates in the tray.

Note - Typical examples of installation of a water intake grill in a tray are shown in Figure 3.

f - the surface of the adjacent road surface or pedestrian zone: 2 - water intake grate: 3 "- chute wall: e ^. aj - the width of the slots between the body of the tray and the lattice: СО - the width of the opening of the tray: А - the depth of planting

Figure 3 - Typical examples of installation of a water intake grill in a tray

3.13 chute clearance area: The area of ​​the free surface located between the supporting walls or the edges of the slots (the area of ​​the upper surface of the box-shaped tray body or the area of ​​the slot in the slotted tray); in mm 2 or cm 2.

Note - Examples of calculating the area of ​​the lumen of the tray are presented in Figure 4.

Sift the area * CO -L. L "C + Lj *

Figure 4 - Examples of calculating the area of ​​sieve in trays

3.14 clearance width: The distance between the supporting walls of the box-shaped tray or between the edges of the slots of the tray (CO), in millimeters.

Note - Examples of determining the width of the lumen of trays are shown in Figures 3 and 4.

3.15 total area of ​​gaps in the body of a slotted tray or in a lattice: The total cross-sectional area of ​​all slots, as well as holes in grids or other openings for passing water in slotted trays within the area of ​​the lumen, e mm 2 or cm 2.

3.16 the size of the ledge in the bottom of adjacent trays: The difference in the vertical marks of the bottom of the abutting trays. as shown in Figure 5.

1 - direction of the watercourse: 2 - surface of the bottom of the trays: a - the size of the ledge in the bottom of the snow trays Figure S - Scheme for determining the size of the ledge in the bottom of adjacent trays

3.17 test loadload, expressed in kN, applied to a chute element or grating during the loading test

3.18 ultimate breaking load: The value of the maximum load indicated in kN. upon reaching which, the destruction of the product occurs during its loading tests.

3.19 polymer concrete: Material obtained by mixing polymer binder and aggregates. the structure of which is formed during the hardening of the binder.

3.20 polymeric materials: Inorganic and organic, amorphous and crystalline substances, consisting of monomer units connected to long macromolecules by chemical or coordination bonds.

4 Classification

4.1 Depending on the manufacturing method, trays are subdivided:

For pre-made (factory-made);

Monolithic (made on site).

4.2 Depending on the design parameters, trays are divided into the following types:

a) box-shaped - open-top trays, consisting of a body and a culvert. Typical tray designs are shown in Figure 6:

I - lattice: 2 - tray body: ft. b - internal dimensions (wetted perimeter)

Figure 6 - Typical box tray designs

b) slotted - trays of a closed profile having a narrow solid or intermittent slot in the upper part for the passage of water. Typical tray design is shown in Figure 7;

L, b - internal dimensions (wetted perimeter)

Figure 7 - Typical design of slotted tray

c) slotted curbs - trays of a closed profile, having a narrow continuous or intermittent slot for the passage of water. Typical tray designs are shown in Figure 8;

L. b - internal dimensions (wetted perimeter)

Figure 8 - Typical designs of curb slotted trays

d) open - upward open trays, consisting only of the body, or of corlus and additional walls, increasing the possible wetted perimeter. Typical tray designs are shown in Figure 9.

L. 6 (b ^. Bjj - internal dimensions (wetted perimeter)

Figure 9 - Typical designs of open trays

4.3 According to the bearing capacity, gutters, including stormwater and sand-collecting wells, and gratings, in accordance with their intended use, are divided into the classes shown in Table 1.

Table 1 - Tray Classes

Load class /	Load bearing capacity
Installation group	(test load value). kN
AO group 1
A1S group II
B125 group ill
C250 group IV

4.4 Depending on the perceived operational loads, the structures of the trays are subdivided:

For type 1 - a tray installed without a foundation or lining, which, when mounted, takes vertical and horizontal loads:

Type 2 - a tray installed on a foundation or a rigid base, which takes vertical loads in the mounted state;

type 3 - a tray installed on the foundation and / or in the lining, which takes vertical and horizontal loads in the assembled state;

Type 4 - a tray installed on the foundation and in the lining to the entire height of the tray, the parameters of which are determined by calculation, which perceives vertical and horizontal loads in the mounted state.

Typical examples of the structural design of the foundation and lining of trays are shown in Figure 10.

1 - bedding layer:? - piece paving elements. 3 - tray. 4 - bituminous mastic: b - road surface, c - top layer of the base; 7 - concrete base: b - underlying layer

Figure 10 - Typical examples of the structural design of the foundation and lining of trays

Lotto * went 1

4.5 Places of installation of trays are divided into the following groups of installation:

Group I - for shallow open trays mounted in ditches of highways, improvement areas not intended for the movement of people and vehicles.

Group II - traffic zones intended for use by pedestrians and cyclists; pedestrian paths closed to traffic;

Group III - parking places for motor vehicles;

Group IV - lanes for motor transport, fortified and dividing lanes, islands of safety, roadsides.

4.6 Trays are designated by stamps, which include letter designations of the type of tray, numerical designation of the main nominal dimensions, including internal dimensions (length, height and width indicated in brackets, or diameter), expressed in centimeters and separated by a dot and a dash, as well as the letter and number designation of the tray class, separated by a dash.

The following conventions are used to indicate the type of trays:

K - box-shaped tray;

Щ - slotted tray;

BSh - slotted curb tray;

0 - open tray:

OD - open lotox with additional walls;

П - rectangular internal section;

U - U-shaped internal section:

KS - annular internal section;

LK - stormwater well;

PC - sand trap.

1 KP 100.35 (25) .40 (33) -A15 Box-shaped tray with rectangular internal section 1000 mm long. 350 mm wide and 400 mm high. including a clear width of 250 mm and an inside height of 350 mm. bearing capacity class A15.

2 ШКС 200.60.60-Ф25-В130 Tray with slotted circular internal section 2000 mm long. 600 mm wide. height 600 mm. inner diameter 250 mm. bearing capacity class B130.

3 PKP v (Ts60) .50.B0 (60) -S250 Block of a fishing line with a rectangular internal section, 800 mm long. 800 mm wide and S00 mm high. including 600 mm inside length and 600 mm clear width. bearing capacity class C2S0.

5 Technical requirements

5.1 General

5.1.1 Trays, storm and sand wells are made of the following materials:

Heavy concrete (reinforced concrete) that meets the requirements of GOST 26633 or national standards in force on the territory of the states that voted for the adoption of the standard, including dispersed reinforced concrete:

Polymer concrete;

5.1.2 Grids of trays are made of cast iron:

With lamellar graphite;

Spherical graphite;

5.1.3 Trays and lattices should be made according to working drawings, approved in accordance with the established procedure. Trays are made in forms that ensure compliance with the requirements established by this standard for their quality and manufacturing accuracy.

5.1.4 Trays and gratings used on roads must be resistant to climatic factors and aggressive environmental factors, ensure the perception of operational loads by the walls of the trays and the grating without destruction and accumulation of deformations during their entire service life.

5.1.5 When heat-and-humidity processing of concrete (reinforced concrete) products, the hardening regimes with an isothermal holding temperature of no more than 60 9 C and a rate of temperature rise and cooling of products of no more than 10 * C / h should be observed.

5.2 Main parameters and dimensions

5.2.1 The shape and nominal dimensions of trays and gratings are set by the manufacturer in agreement with the consumer.

The main parameters of the shape and dimensions should ensure that the trays and gratings correspond to their purpose, as well as the reliability and safety of their use on highways.

5.2.2 The main dimensions of the trays include their length, width and height, the parameters of their internal cross-section (wetted perimeter), as well as the dimensions of the slots of the side slotted and slotted trays.

The main dimensions of the gratings include their length, width and thickness, as well as the dimensions of the slots and holes.

As a general rule, the internal height (depth) of the tray should be no less than its nominal width (clear width).

5.2.3 The compliance of trays with the requirements for their shape and size is assessed by the magnitude of deviations of the actual values ​​of the corresponding indicators from their nominal values.

Values ​​of actual deviations of indicators of internal dimensions of trays from nominal values ​​should not exceed the limit values ​​specified in table 2.

Table 2 - Geometric dimensions of trays and maximum deviations

In millimeters

Internal dimension name	Limit deviation
	Outer tray height up to 500 keys	The outer height of the St. 500
up to 1000 keys
over 1000 to 4000 keys.
up to S00 keys
Height (diameter):
up to 200 keys

5.2.4 Errors in the manufacture of products should not exceed the following values:

a) deviation of wall thickness -1.5 mm:

b) deviation from the flatness of the end faces - 2.0 mm:

f) deviation from the straightness of the profile of the upper front surface at a length of 1000 mm -1.5 mm:

d) deviation from the perpendicularity of the end and adjacent faces at the height of the product:

up to 200mm incl. - 1.5mm;

behold. 200 to 500 mm wrench - 2.5 mm:

St. 500 mm - 5.0 mm.

5.2.5 Values ​​of actual deviations of indices of internal dimensions of trays, manufactured at the place of production of work from monolithic concrete (reinforced concrete), from nominal values ​​should not exceed the limit values ​​specified in Table 2.

5.2.6 Deviations of the internal dimensions of the blocks of stormwater or sand-collecting wells from the nominal ones should not exceed the following values:

13 mm - with the outer height of the tray up to 500 mm.

15 mm - with an outer tray height of St. 500 mm.

5.2.7 The width of the slot in the slotted tray can be from 10 to 42 mm, depending on the direction * of its axis in relation to the direction of movement of road transport and is set in accordance with Table 3.

Table 3 - Geometric dimensions of the slot in the slotted tray

5.2.8 In the slotted curb tray, the slot parameters should be:

Length - no more than 170 mm:

Width - no more than 90 mm.

In this case, the width of the vertical projection of the slit on the horizontal plane should not exceed 32 mm with the bevel angle of the front surface of the border not more than 20 *.

5.2.9 Slots or other openings in gratings should be evenly distributed over their entire area. The area of ​​slots or other openings should be at least 30% of its net area.

5.2.10 Parameters of grids in gratings designed for load classes A15 and B125. should be:

With a width of 6 to 18 mm - the length of the slit is not limited;

With the width of the slit be. 18 to 25 mm wrench - the length of the slot should not exceed 170 mm.

The parameters of the slots in the gratings, calculated for the load class C250. depending on the location of their axes in relation to the direction of movement of road transport, it is set in accordance with Table 3.

5.3 Key indicators and characteristics

5.3.1 The main indicators characterizing the quality of trays and gratings, as well as construction materials from which they are made, include:

Appearance and surface quality of products;

Strength and crack resistance of products;

Compressive strength of structural material;

Flexural tensile strength of a structural material;

The volume of air entrained in the concrete mix;

Frost resistance of construction material;

Waterproofness of construction material;

Water absorption of structural material;

Abrasion of construction material;

The thickness of the concrete cover over the steel reinforcement;

Specific effective activity of natural radionuclides;

The shape and quality of reinforcement and embedded products, reinforcing nozzles:

Reinforcing steel grade, steel and cast iron grade of embedded products and reinforcing nozzles;

Cast iron grates.

5.3.2 Appearance and surface quality of products

5.3.2.1 For trays made of concrete (reinforced concrete, dispersed reinforced concrete), the front surface must correspond to a category not lower than AB, and non-front surfaces must correspond to a category not lower than A7 in accordance with GOST 13015 or in accordance with the requirements of national standards in force on the territory of the states that voted for the adoption of the standard ...

5.3.2.2 The presence of separate defects in the form of damage on the surface of the trays is allowed, with the exception of the front surface:

Chips on the edges of trays up to 10 mm deep with a total chipping length of no more than 100 mm per item;

Surface cracks no more than 0.1 mm wide with a total crack length no more than 100 mm per item.

5.3.2.3 The presence of oil and rust stains on the front surface of open, slotted and border slotted trays is not allowed.

5.3.2.4 Lattices and reinforcing attachments should not have defects that would reduce their strength.

On the surface of products, the presence of shells with a diameter of not more than 10 mm and a depth of

no more than 3 mm. occupying no more than 5% of the surface of products. Cracks are not allowed. On the lower supporting surface of the nozzles and grids, the presence of slag inclusions, occupying no more than 10% of the total surface area, is allowed.

5.3.2.5 Product tolerances in accordance with GOST 26645 must comply with:

Not less than 10 class of accuracy - in terms of size;

Not less than 11 class of accuracy - by weight.

5.3.2.6 The grilles should fit tightly to the contact surface of reinforcing attachments or embedded products. The flatness tolerance of the grating support surface should not exceed 2 mm.

Grilles rated for load class C250. should have a damping gasket, which is placed on the contact surface of the nozzle or fixed to the support surface of the grating. The design, dimensions of the gasket and the methods of its fastening are determined by the manufacturer. The hardness of the damping pad must be at least 40 Shore.

5.3.3 Strength and crack resistance of products

5.3.3.1 Trays must comply with the strength requirements established by this standard, and made of reinforced concrete - in addition to crack resistance. and withstand the test loads specified in table 1.

5.3.3.2 The control width of crack opening when testing for crack resistance of flumes, storm and line wells made of reinforced concrete shall not exceed 0.2 mm.

The appearance of cracks in the bodies of products made of concrete, including dispersed reinforced concrete, and polymer concrete during strength tests is not allowed.

5.3.3.3 The gratings shall withstand, during strength tests, the control loads specified in Table 1. without cracking.

5.3.4 Compressive and tensile flexural strength of structural materials

5.3.4.1 Trays, stormwater and sand-collecting wells are made of concrete of compressive strength and tensile bending strength classes not lower than VZO and Vts, 4.0, respectively.

The lining and foundations of the trays should be made of monolithic concrete of a compressive strength class of at least B25.

5.3.4.2 The value of the normalized tempering strength of concrete and reinforced concrete products must be at least 90% of the class of concrete in terms of compressive strength and tensile bending strength.

5.3.4.3 The actual strength of concrete must correspond to the required strength in accordance with GOST 18105, depending on the indicators of the actual homogeneity of the strength of concrete.

5.3.4.4 Polymer concrete used for the manufacture of trays. vvoeraste7day should have the following physical and mechanical indicators:

Compressive strength - not less than 90 MPa;

Flexural strength - not less than 22 MPa.

5.3.5 Frost resistance of construction materials

5.3.5.1 Frost resistance of concrete of gutters, storm and sand wells, as well as lining of gutters should be not less than F200 grade when tested by the second basic method.

5.3.5.2 Frost resistance of polymer concrete of trays should not be lower than grade F200 when tested by the second basic method.

5.3.6 Water tightness of materials of construction

5.3.6.1 Water tightness of concrete gutters, storm and sand wells must be at least W8 grade.

The water resistance of the concrete lining of the trays must not be lower than the W6 grade.

5.3.6.2 Water resistance of polymer concrete trays must be at least W8 grade.

5.3.7 Water absorption of materials of construction

5.3.7.1 Water absorption of concrete in gutters, storm and sand wells, as well as lining of gutters should not exceed 5% by weight.

Water absorption of polymer concrete should not exceed 0.5% by weight.

5.3.8 Abrasion of construction materials

The value of the abrasion resistance of structural materials of slotted and curb slotted trays, as well as trays whose structural elements are directly exposed to the wheels of vehicles and pedestrian loads, should not exceed 0.7 g / cm *.

5.3.9 Concrete cover over service steel reinforcement

The thickness of the concrete cover over the working steel reinforcement for slotted and curb slotted trays must be at least 30 mm. and for other products and lining of trays - at least 20 mm.

5.3.10 Specific effective activity of natural radionuclides

The value of the indicator of the total specific effective activity for trays and gratings used on public roads within the territories of settlements and areas of prospective development should not exceed 740 Bq / kg. and outside settlements - 1500 Bq / kg.

5.3.11 Shape and quality of reinforcement and embedded products, reinforcing nozzles

5.3.11.1 The shape and dimensions of reinforcement and embedded products and their position in trays and blocks of stormwater and sand-collecting wells must correspond to the working drawings developed and approved in the prescribed manner.

Welded reinforcement and embedded products must meet the requirements of working drawings. GOST 10922. GOST 23279.

5.3.11.2 Embedded products and reinforcing attachments are made in the form of solid castings, stamped, bent or welded elements.

Metal castings must meet the requirements of GOST 977. GOST 26358. GOST 26645.

In the manufacture of welded embedded products and reinforcing nozzles, the requirements of GOST 5264. GOST 11534 should be observed.

5.3.11.3 Embedded products integrated into trays during their manufacture must be connected to them using anchors in the form of a rigid single element.

5.3.11.4 The surface of fittings and embedded parts, fittings and fittings that have direct contact with the external environment must have an anti-corrosion coating. Anti-corrosion coatings must comply with the requirements of regulatory documents. operating on the territory of states that voted for the adoption of the standard.

5.3.12 Grades of reinforcing steel, steel and cast iron for embedded products and reinforcing nozzles

12.1 For the manufacture of reinforcing products, assembly-butt and butt joints, the reinforcing steels indicated in the working drawings are used. In this case, reinforcing steels must meet the following requirements:

Reinforcing bar steel grades A-I... A-Ill, A-IV and A-V in accordance with GOST 5781;

* thermomechanically and thermally hardened reinforcing steel of the At-ShS classes. At-IVC. At-IV and At-Vno GOST 10884:

Reinforcing wire of class Вр-I in accordance with GOST 6727.

Non-weldable reinforcing steel of classes At-IV and At-V should be used in the form of solid bars of measured length without welded joints.

5.3.12.2 For the manufacture of embedded products and reinforcing nozzles, rolled and sheet steel specified in the working drawings are used.

Stamped, bent and welded embedded products and reinforcing nozzles are made of rolled steel and sheet steel that meet the requirements of GOST 5582. GOST 14918. GOST 16523. GOST 19903 and GOST 19904.

5.3.12.3 The use of mild structural steel is permitted provided it provides adequate corrosion resistance, which is achieved by hot-dip galvanizing.

5.3.12.4 Reinforcing attachments in the form of castings are made of cast iron of grade not lower than SCH 20 in accordance with GOST 1412. GOST 7293.

5.3.13 Cast iron grade of grilles

Lattices in the form of castings are made of cast iron of grade not lower than SCH 20 in accordance with GOST 1412. GOST 7293.

5.4 Material requirements

5.4.1 Requirements for materials for the preparation of concrete mixtures

5.4.1.1 The workability of concrete mixtures must correspond to that specified in the technological regulations for the manufacture of trays and concrete lining.

5.4.1.2 The volume of entrained air in concrete mixes must be not less than that established when selecting the mix composition and be in the range from 5% to 7%.

5.4.1.3 For preparation concrete mix Portland cement should be used for concrete of coatings and artificial structures CEM i N. CEM ll / A-Sh N strength classes 32.5-52.5 in accordance with GOST 33174.

It is allowed to use Portland cement PC-D0-N and PC-D20-N. containing an additive of granulated blast furnace slag not more than 15% of the mass of clinker, grades 400-550 in accordance with GOST 10178 or Portland cement CEM I N and CEM ll / A-Sh N. containing an additive of granulated blast furnace slag not more than 15% of the mass of clinker, strength classes 32.5-52.5 according to GOST 31108. The content of tricalcium aluminate in clinker should not exceed 8% by weight.

5.4.1.4 8 crushed stone from dense rocks that meets the requirements of GOST 32703 should be used as a coarse aggregate. It is allowed to use crushed stone from dense rocks that meets the requirements of GOST 8267.

16mm -LOGOST32703:

20 mm - according to GOST 8267.

The crushed stone grade in terms of crushing must not be less than 1200. The frost resistance grade - not less than F200.

5.4.1.5 8 natural and crushed sands complying with the requirements of GOST 32823 and GOST 32730 should be used as fine aggregate, at least class I or mixtures thereof.

It is allowed to use natural and crushed fishing lines that meet the requirements of GOST 8736. not lower than class I or their mixtures.

5.4.1.6 Water for the preparation of concrete mixtures must meet the requirements of GOST 23732.

5.4.17 Plasticizing and air-entraining chemical additives should be added to the concrete mix. Chemical additives must comply with the requirements of regulatory documents * in force on the territory of the states that voted for the adoption of the standard.

5.4.1.8 In order to increase the specific impact strength of concrete and crack resistance of concrete products, it is recommended to introduce fibers made of artificial, synthetic and natural fibers into the concrete mix.

Fiber made of artificial fibers of organic or mineral origin must be alkali-resistant, the fibers must have a special coating that prevents them from clumping when a static electric charge accumulates on their surface during the mixing of the fiber-reinforced concrete mixture.

The quality of the fiber must comply with the requirements of the regulatory documents in force on the territory of the states that voted for the adoption of the standard.

5.4.2 Requirements for materials for the preparation of polymer concrete mixture

5.4.2.1 For the preparation of lolymer concrete mixtures, the following synthetic resins should be used:

Furfural acetone:

Unsaturated polyester;

Furano epoxy:

Methacryloy acid methyl ester (methyl methacrylate monomer).

8 as hardeners for synthetic resins are used:

Benzenesulfonic acid - for furfural acetone resins;

Isopropylbenzene hydroperoxide - for polyester resins;

Polyethylene polyamine - for furan-epoxy resins;

A system consisting of technical dimelaniline and benzoyl peroxide for methyl methacrylate.

8 cobalt naphthenate is used as an accelerator for the hardening of polyester resins.

To reduce the volatility of methyl methacrylate, petroleum wax should be used.

5.4.2.2 Catapin, alkamon should be used as plasticizing additives. melamine-co-formaldehyde resin and sulfonated naphthalene-formaldehyde compounds (plasticizer C * 3).

5.4.2.3 As a coarse aggregate, crushed stone from dense rocks should be used that meets the requirements of GOST 32703. It is allowed to use crushed stone from dense rocks that meets the requirements of GOST 8267.

It is not allowed to use crushed stone from sedimentary rocks.

The maximum size of crushed stone grains should not exceed:

16 mm - according to GOST 32703;

20 mm - according to GOST 8267.

For the preparation of polymer concrete mixture, crushed stone of fraction 8-16 mm in accordance with GOST 32703 or fractions of 10-20 mm in accordance with GOST 8267 are used.

The mark of crushed stone for crushing must be at least 1200. Mark for frost resistance - at least

5.4.2.4 As a fine aggregate, natural and crushed sands of medium size or coarse should be used that meet the requirements of GOST 32823 and GOST 32730, not lower, or mixtures thereof.

It is allowed to use natural and crushed sands of medium size or coarse, meeting the requirements of GOST 8736, or mixtures thereof.

Natural and crushed sands should not contain inclusions of sedimentary origin.

5.4.2.5 Moisture content of coarse and fine aggregates should not exceed 0.5% by mass.

5.4.2.6 Andesite, quartz or diabase flour, marshalite and graphite powder should be used as filler.

It is allowed to use finely ground crushed stone from dense rocks and quartz sand.

5.4.2.7 The value of the specific surface area of ​​the filler should be in the range from 250 to 300 m 2 / kg.

The moisture content of the filler should not exceed 1% by weight.

5.5 Marking

5.5.1 When supplying side stones to the consumer, the manufacturer (supplier) ensures their marking in accordance with GOST 14192 and the requirements of this standard.

5.5.2 When marking trays, the norms of the legislation in force on the territory of the states that voted for the adoption of the standard and establishing the procedure for marking products with information in the state language must be observed.

5.5.3 Marking should be applied to the packaging of products, and in its absence - to lateral surface not less than 10% of the number of delivered products in a batch.

Marking on the face or base of the trays is not allowed.

5.5.4 Markings must contain:

Specifying the view. type, load class, installation group and main dimensions of the product;

Designation of this standard:

Manufacturer's trademark or short name;

Date of manufacture in format: years mm.dd (for example, the date March 4, 2015 indicates: 03/15/04);

Product weight in tons;

Technical control stamp.

5.5.5 Markings should be visible during storage, easy to read and resistant to weather and mechanical influences.

5.5.6 If necessary, it is allowed to apply assembly and handling signs on the surface of products (except for the front surface).

6 Acceptance rules

6.1 Trays must be accepted by the manufacturer's technical control service. Acceptance of trays is carried out in batches in accordance with the requirements of GOST 13015 or with national norms in force on the territory of the states that voted for the adoption of the standard. The batch includes products of the same type and class, consistently manufactured by the enterprise using the same technology within no more than one day from materials of the same type and quality.

When manufacturing a tray irregularly or in small quantities, provided that the uniformity of product quality is ensured, it is allowed to include products manufactured within a few days, but not more than one week, in the batch.

6.2 Trays are accepted according to the results of acceptance and periodic tests. In periodic tests, documented seasonal production stops are not included in the period between tests.

6.3 Trays accept:

According to the results of acceptance tests - for concrete products in terms of strength (class of concrete in terms of compressive strength and tempering strength), volume of entrained air, compliance of reinforcement, reinforcement and embedded products with working drawings, strength of welded joints, accuracy of geometric parameters, thickness of protective concrete layer to reinforcement, crack opening width, quality of concrete surfaces and appearance, the presence of an anti-corrosion coating on the open surfaces of embedded products, the correctness of the marking.

For polymer concrete products - in terms of compressive strength, compliance of reinforcement and embedded products with working drawings, strength of welded joints, accuracy of geometric parameters, crack opening width, surface quality and appearance, presence of anti-corrosion coating on unopened surfaces of embedded products, correct marking;

According to the results of periodic tests - for concrete products in terms of tensile strength in bending (class of concrete for tensile strength in bending), frost resistance, water resistance, water absorption. abrasion, specific effective activity of natural radionuclides.

For polymer concrete products - in terms of flexural strength, frost resistance and water resistance. eodoabsorption. abrasion, specific effective activity of natural radionuclides.

6.4 Tests of trays by loading for strength and crack resistance (for trays made of reinforced concrete) are carried out before the start of their mass production, when structural changes are made to them, when the manufacturing technology and quality of materials change, as well as in the process of serial production product drawings.

Testing of products by loading in the event of structural changes or changes in manufacturing technology may not be carried out in agreement with the design organization - the developer of the working drawings.

6.5 Tests of structural materials for strength during bending, frost resistance, water impermeability and water absorption are carried out during the development of the production of products and further with a change in manufacturing technology, nominal material composition, type and quality of materials, but not less often:

Once every 1 month - flexural strength:

Once every 3 months - water absorption:

Once every 6 months - frost resistance, water resistance and abrasion resistance.

6.6 Tests on the indicator of specific effective activity of natural radionuclides in construction materials carried out during the initial selection of the nominal composition of the material, as well as when the quality of the materials used changes, when the specific effective activity of natural radionuclides in new materials exceeds the corresponding characteristics of materials previously used.

6.7 The release strength of concrete of products is determined after the expiration of the design period, set taking into account the duration of storage of products after stripping, or upon delivery to the consumer.

6.8 Determination of water absorption of concrete trays is carried out after reaching the tempering strength of concrete.

6.9 Acceptance of products in terms of the accuracy of geometric parameters, the thickness of the concrete cover to the reinforcement, the width of the crack opening, the quality of surfaces and appearance, the presence of grease and rust stains on the surfaces of products is carried out according to the results of a one-stage selective inspection in accordance with GOST 13015 or national standards in force on the territory of states that voted for the adoption of standards.

6.10 The presence of grease and rusty spots on the surfaces of products, the presence of mounting loops and cleaning them from concrete influxes, the presence and correctness of the marking of products are established based on the results of continuous control.

6.11 A lot of products not accepted based on the results of sampling is subject to piece-by-piece acceptance. In this case, the acceptance of products should be carried out according to indicators for which the batch was not accepted.

6.12 The consumer has the right to carry out quality control of products according to indicators that can be checked on finished products, applying the rules of acceptance established by this standard.

6.13 Each batch of trays accepted by the manufacturer's technical control must be accompanied by a quality document in accordance with GOST 13015 or in accordance with national standards in force on the territory of the states that voted for the adoption of the standards.

6.14 8 the quality document must indicate:

Manufacturer's name and address;

Number and date of issue of the document;

Batch number:

Name, type and class of products in terms of bearing capacity;

The number of products of each type and class of bearing capacity:

Date of manufacture of products;

Compressive strength class of concrete (compressive strength);

Bending tensile strength class of concrete (bending strength);

Tempering strength of concrete:

Frost resistance grade;

Waterproof grade;

Specific effective activity of natural radionuclides 4, f f. Bq / kg;

Designation of this standard;

Manufacturer's warranty.

7 Safety and environmental requirements

7.1 Trays must ensure the safety of their use on roads in accordance with the legislation of the states that voted for the adoption of the standard.

7.2 Trays installed in areas of movement of pedestrians, cyclists and vehicles should not have sharp corners and cutting edges on the face.

7.3 Radiation safety of side stones is characterized by the indicator of the total specific effective activity of natural radionuclides.

The values ​​of the indicator of the total specific effective activity of natural radionuclides for trays used on highways within the territories of settlements and areas of prospective development should not exceed 740 Bq / kg.

The values ​​of the indicator of the total specific effective activity of natural radionuclides for trays used on highways outside settlements should not exceed 1500 Bq / kg.

7.4 If necessary, in accordance with the national norms in force on the territory of the states that voted for the adoption of the standard, the maximum permissible value of the specific effective activity of natural radionuclides in relation to the trays can be changed within the limits specified in 7.3.

7.5 Structural lolymer concrete materials for the manufacture of trays must be fireproof or hardly combustible.

7.6 In terms of flammability, the materials of the trays must belong to a group not lower than ВЗ in accordance with GOST 30402.

8 Transport and storage

8.1 Trays are allowed to be transported by all types of transport. At the same time, the rules of transportation are established in accordance with the legislation of the states that voted for the adoption of the standard, and the requirements of documents regulating the transportation of goods.

Loading, unloading and securing trays during transportation should be carried out in accordance with the requirements technical conditions loading and securing cargo.

8.2 When loading trays into a vehicle, the conditions for uniform distribution of the load relative to its axes and ensuring the required clearance between the products and the sides of the vehicle should be observed.

8.3 Transportation and storage of trays made of concrete on a cement binder is carried out in accordance with the requirements of this standard. GOST 13015 or in accordance with national regulations in force on the territory of the states that voted for the adoption of the standard.

8.4 When transporting trays and loading and unloading operations, it is prohibited:

Loading and transportation of products in bulk:

Drop unloading:

Moving products by dragging, without gaskets and rollers;

Loading and transportation of products made of concrete on a cement binder, until they reach their tempering strength.

During transportation, the products must be securely fastened and must not be subjected to shocks and shocks.

8.5 During transportation, trays must be provided with the necessary accompanying documentation.

8.6 Trays should be stored in storage conditions sorted by type, type and load class in stacks with a height of no more than 2 m while ensuring their stability and excluding the possibility of falling products.

The place (area) for storing trays should have a firm, level surface with a drainage system provided.

8.7 When storing in stacks, trays should be placed on inventory pads and / or pads of rectangular or trapezoidal section made of wood or other materials that ensure the safety of products, with a thickness of at least 30 mm and a length corresponding to the dimensions of the product. In this case, products of the same size and shape should be stacked in a stack, and the gaskets should be placed at the height of the stacks one above the other. Unless otherwise specified, the distance from the edges of the gaskets to the ends should be in the order of 25% of the nominal length of the product.

8.8 Storage conditions should ensure the visibility of markings and free access to products, as well as the possibility of warehouse control and the use of mechanization means when loading products onto vehicles.

8.9 During transportation, storage of trays and during loading and unloading operations, the requirements of industrial safety and labor protection must be observed.

9 Manufacturer's warranty

9.1 The manufacturer guarantees the compliance of the supplied products with the requirements of this standard, subject to the rules of transportation and storage established by this standard.

9.2 The manufacturer guarantees for at least 3 years the preservation of the consumer qualities of the products, subject to the instructions for installation and use established by the project documentation. and operation of linear drainage systems using mechanisms and tools that exclude mechanical damage to products.

Directions for use

A.1 Installation of trays is carried out in accordance with the project documentation.

A.2 After installation, the structure of the mounted trays must be strong and rigid, withstand operational loads from the effects of vehicles and linear temperature deformations, ensure the intake and discharge of surface water and be waterproof.

To ensure the integrity of the structure of trays, including those with concrete lining, it is necessary to provide for transverse expansion joints.

A.3 If elements (blocks) of trays are made with a longitudinal slope of the bottom. then its value should be at least 0.3%. In this case, the blocks of trays must be appropriately marked to ensure their consistent assembly.

A.4 Adjacent trays should be joined so as not to constrict the inner section. The size of the ledge in the bottom of the joined trays should not exceed 5.0 mm.

A.S If the structure of the gutters provides for sand-collecting wells or waste bins, then their design must ensure unimpeded drainage and ventilation, provided they are completely filled with sand or other objects.

A.6 Tray joints, expansion joints, and joints of trays with an adjacent coating should be sealed.

To seal joints and seams, materials are used that provide reliable performance trays without compromising their waterproofness.

A.7 The depth of the grating in the structure of the tray should be at least:

20 mm - for gratings of class A15;

25 mm - for gratings of class 8125;

35 mm - for gratings of class C250.

A.8 The difference in heights between the upper edge of the grating and the surface of the tray extending onto the surface of the carriageway coverings should not exceed 1.0 mm.

A.9 To limit the horizontal displacement of the grate in the tray, the width of the gap between the body of the grate and the body of the tray (reinforcing attachment) should not exceed 3 mm around the perimeter.

A.10 The opening angle of the grids hinged to the body of the tray or reinforcing nozzle in relation to the surface of the coating should be at least 100 *. unless other requirements are established by the project documentation.

A.11 The design of the linear surface drainage system, made of trays, must be maintainable and provide the ability to:

Cleaning of debris from trays and sand wells, water outlets and openings, waste bins and openings of grates, as well as removal of snow and ice formations.

Periodic inspection of the integrity of its separate parts, additional elements, connecting nodes;

Replacement of damaged elements:

Timely inspection of the state of the anti-corrosion coating on its elements, maintenance and restoration of damaged areas of the coating:

To clean the trays in the following ways:

a) mechanically, by cleaning accessible places and removing debris mechanically or manually.

6) hydrodynamic, by flushing the system with a jet of water under high pressure;

c) thermal or chemical, by melting and allotting ice formations.

UDC 626.861.5: 625.7: 006.384 MKS 93.080.30

Key words: motor road, road trays, gratings, technical requirements, safety

Editor A, A-bakanov Technical editor 8.N. Prusayaoaa Corrector U.C. Kabashoaa Computer profile A N. Zololtareoi

Rented and set 12/14/2015. Signed for printing 08 02.2016. Format 50.64 ^ Arial typeface.

Uel. Pen. I am. 2.79. Uch.-iad. l. 2.40. Circulation EZ eke. Zack. 35.

Published and printed at FGUP "STAMDARTINFORM", 123905 Moscow, Granatny per., 4. www.90stinfo.1u