WOODEN SLEEPERS FOR BROAD GAUGE RAILWAYS

Specifications

INTERSTATE COUNCIL FOR STANDARDIZATION, METROLOGY AND CERTIFICATION

Minsk

Foreword

1. DEVELOPED by the Technical Committee for Standardization MTK 82 "Round Timber", the State Unitary Enterprise "All-Russian Research Institute of Railway Transport" (GUP VNIIZhT) of the Ministry of Railways of Russia and the Open Joint-Stock Company "Irkutsk Research Institute of the Forestry Industry" (OJSC "Irkutsk- NIILP")

2. INTRODUCED by the Federal Agency for Technical Regulation and Metrology

3. ADOPTED by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 25 dated May 26, 2004)

4. By order of the Federal Agency for Technical Regulation and Metrology dated December 21, 2004 No. 124-st, the interstate standard GOST 78-2004 was put into effect directly as the national standard of the Russian Federation from January 1, 2006.

5. REPLACE GOST 78-89

INTERSTATE STANDARD

the dateintroductions 2006-01-01

1 area of ​​use

This standard applies to wooden sleepers used in the construction, operation and repair of 1 520 mm gauge railway track.

2. Regulatory references

This standard uses references to the following standards:

5.7. Sleepers before impregnation must be deeply stabbed. By agreement with the consumer, the sleepers can be not spiked.

5.8. After drying before impregnation, the sleepers must be strengthened against cracking by one of the methods in accordance with the requirements of the technological processes for impregnating sleepers at sleeper impregnation plants and the instructions for the maintenance of wooden sleepers, transfer and bridge beams of 1520 mm gauge railways. By agreement with the consumer, the sleepers can be without hardeners.

5.9. Sleepers should be made from pine, spruce, fir, larch and birch wood.

5.10. The moisture content of sleeper wood during manufacture is not standardized.

5.11. The quality of sleeper timber must meet the requirements specified in Table 2.

Table 2

5.12. Unimpregnated sleepers should be sorted by each type separately and by species:

Pine;

Spruce and fir;

Larch;

Birch.

Deep-split and crack-reinforced sleepers are sorted separately. The impregnated sleepers are sorted by type.

5.13. Untreated sleepers should be marked in accordance with Table 3.

5.14. The marking must allow identification of the manufacturer. The marking must be legible and applied by branding or permanent paint on one of the ends of the sleeper.

The marking of sleepers after impregnation is not resumed.

Table 3

6. Safety requirements

6.1. The manufacture of sleepers in sawmill shops or specialized shops of timber industry enterprises should be carried out in accordance with the requirements of GOST 12.3.042, loading and unloading operations - in accordance with the requirements of GOST 12.3.009

7.2. The quality document must contain:

Name and address of the organization (supplier enterprise);

Type, species of wood - for untreated sleepers;

Type - for impregnated sleepers;

The number of sleepers in the party in pieces;

The designation of this standard;

Confirmation of compliance with this standard.

7.3. The number of sleepers in the batch is determined by continuous recalculation.

7.4. The quality, dimensions and humidity of the sleepers are checked by random control according to GOST 18321, using the "blind" method. The selection of sleepers in the sample is carried out in the amount indicated in table 4.

Table 4

In pieces

The lot is accepted if all sleepers in the sample comply with the requirements of this standard. Upon receipt of unsatisfactory results, the batch is rejected or, in agreement with the consumer, a complete control of the batch is carried out and the replacement of rejected sleepers is carried out.

8. Control methods

8.1. Determination and measurement of defects in wood and processing - according to GOST 2140.

8.2. Determination of the moisture content of wood sleepers - according to GOST 16588.

8.3. Control of pre-impregnation moisture content of sleeper wood - according to GOST 20022.5.

8.4. Quality control of the deep sleeper stitching - according to the normative document.

8.5. Quality control of the strengthening of sleepers from cracking - according to the regulatory document, depending on the method used.

8.6. Quality control of impregnation of sleepers - according to GOST 20022.5.

8.7. The dimensions of the sleepers should be controlled:

The length of the sleeper - according to the smallest distance between its ends;

The width of the upper and lower layers of the sleeper - in the narrowest places on sections of length
400 mm, located at a distance of 380 mm from its ends;

Sleeper thickness - anywhere, but no closer than 380 mm from its ends.

8.8. The dimensions of the sleepers are checked with a straightedge according to GOST 8026 or a metal tape measure RZZH of the 2nd class according to GOST 7502. It is allowed to check the cross-sectional dimensions of the sleepers with a metal ruler in accordance with GOST 427.

9. Transportation and storage

9.1. Transportation of sleepers is carried out by transport of all types in accordance with the rules for the carriage of goods in force for the corresponding type of transport. The dimensions of the sleeper packages are in accordance with GOST 16369.

9.2. Sleepers in the warehouses of the manufacturer are stored in piles.

Each stack of sleepers must be laid on a foundation of reinforced concrete, concrete or wooden beams. The height of the foundation must be at least 400 mm.

When storing sleepers in warehouses for more than 10 days, each horizontal row of sleepers in a stack must be separated from the other by spacers from healthy debarked wood. The thickness of the gaskets is at least 20 mm.

In horizontal rows between sleepers there should be gaps 20-40 mm wide.

9.3. Storage of sleepers at sleeper impregnation plants - in accordance with the requirements for the impregnation of sleepers.

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INTERSTATE STANDARD

WOODEN SLEEPERS FOR IRON
BROAD GAUGE ROADS

Specifications

INTERSTATE COUNCIL
ON STANDARDIZATION, METROLOGY AND CERTIFICATION

Minsk

Foreword

1 DEVELOPED by the Technical Committee for Standardization MTK 82 "Round Timber", the State Unitary Enterprise "All-Russian Research Institute of Railway Transport" (GUP VNIIZhT) of the Ministry of Railways of Russia and the Open Joint-Stock Company "Irkutsk Research Institute of the Forestry Industry" (JSC "Irkutsk-NIILP "")

2 INTRODUCED by the Federal Agency for Technical Regulation and Metrology

3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (Minutes No. 25 dated May 26, 2004)

4 By order of the Federal Agency for Technical Regulation and Metrology dated December 21, 2004 No. 124-st, the interstate standard GOST 78-2004 was put into effect directly as the national standard of the Russian Federation from January 1, 2006.

6 REVISION. March 2007

INTERSTATE STANDARD

Introduction date 2006-01-01

1 area of ​​use

This standard applies to wooden sleepers used in the construction, operation and repair of 1 520 mm gauge railway track.

2 Normative references

3.3. semi-edged sleeper: Sleeper in the form of a three-edged beam.

3.5. untreated sleeper: Sleeper not treated with protective agents.

3.6. impregnated sleeper: Sleeper treated with protective agents.

3.7. deep sleeper: A sleeper subjected to a special treatment by deep tattooing in order to increase the depth of impregnation with protective agents.

3.8. upper layer of the sleeper: The sawn longitudinal surface of the sleeper, which has a smaller width.

3.9. the bottom layer of the sleeper: The sawn longitudinal surface of the sleeper, which has a large width.

3.10. sleeper side: Sawn longitudinal lateral surface of the sleeper.

3.11. wane part of the sleeper: Unsawn sections of the sleeper surface along the upper layer and side.

4 Main types and sizes

4.1. The cross-sectional shape of the sleepers is shown in Figures 1 - 3.

Picture 1

Figure 2

Figure 3

4.2. According to the cross-sectional dimensions, the sleepers are made of three types, depending on the purpose:

I - for the main tracks of the 1st and 2nd classes 1), as well as for the tracks of the 3rd class with a traffic density of more than 50 million tons km gross / km per year at train speeds of more than 100 km / h;

1) The classification of railway tracks is given in accordance with the Regulations on the system of track management on the railways of the Russian Federation, approved by the Ministry of Railways on April 27, 2001.

II - for the main tracks of the 3rd and 4th classes, sidings with intensive work, receiving and departure and sorting tracks at stations;

III - for any tracks of the 5th class, including station, low-traffic access and other tracks with a shunting-export traffic pattern.

4.3. The dimensions of the sleepers, depending on the types, must correspond to those indicated in Table 1.

Table 1

Dimensions in mm

4.4. The dimensions of the sleepers are set for wood with a moisture content of not more than 22%. At higher humidity, the dimensions should be increased by the shrinkage allowance in accordance with GOST 6782.1 - for sleepers made from coniferous wood, and according to GOST 6782.2 - from hardwood.

5 Technical requirements

5.1. The top and bottom faces of the sleepers should be mutually parallel. The non-parallelism of the layers and sides is allowed according to the norms of maximum deviations in the thickness and width of the sleeper, respectively. The sides should be mutually parallel and perpendicular to the top and bottom plates.

5.2. The ends of the sleepers must be sawn off perpendicular to the longitudinal axis. The bevel of the cut ends of the sleepers in relation to the longitudinal axis should not be more than 20 mm in thickness and width.

5.3. Wane sections of the sleepers should be cleared of bark and bast.

5.4. Knots and ribbed butt on unsawn surfaces should be cut flush with the sleeper surface, and the cut may be flat.

5.5. Notches and notches are not allowed on the upper face of the sleepers in the areas of laying under-rail pads and on other surfaces with the minimum dimensions of the height of the sawn sides, in other cases they should not be more than 20 mm deep and more than 40 mm wide.

5.6. Sleepers before laying on the road must be impregnated with oily protective agents. The quality of the impregnation of the sleepers, as well as the absorption standards for protective agents, must comply with the requirements of GOST 20022.0, GOST 20022.5.

5.7. Sleepers before impregnation must be deeply stabbed. By agreement with the consumer, the sleepers can be not spiked.

5.8. After drying before impregnation, the sleepers must be strengthened against cracking by one of the methods in accordance with the requirements of the technological processes for impregnating sleepers at sleeper impregnation plants and the instructions for the maintenance of wooden sleepers, transfer and bridge beams of 1520 mm gauge railways. By agreement with the consumer, the sleepers can be without hardeners.

5.9. Sleepers should be made from pine, spruce, fir, larch and birch wood.

5.10. The moisture content of sleeper wood during manufacture is not standardized.

5.11. The quality of sleeper timber must meet the requirements specified in Table 2.

table 2

GOST 78-2004

Group K23

INTERSTATE STANDARD

WOODEN SLEEPERS FOR BROAD GAUGE RAILWAYS

Specifications

Wooden sleepers for full gauge railways. Specifications

MKS 45.080
OKP 53 4110

Introduction date 2006-01-01

Foreword

1 DEVELOPED by the Technical Committee for Standardization MTK 82 "Round Timber", the State Unitary Enterprise "All-Russian Research Institute of Railway Transport" (GUP VNIIZhT) of the Ministry of Railways of Russia and the Open Joint-Stock Company "Irkutsk Research Institute of the Forestry Industry" (JSC "Irkutsk-NIILP ")

2 INTRODUCED by the Federal Agency for Technical Regulation and Metrology

3 ADOPTED by the Interstate Council for Standardization, Metrology and Certification (minutes N 25 dated May 26, 2004)

Voted for the adoption of the standard:

________________
* The text of the document corresponds to the original. - Database manufacturer's note.

4 By order of the Federal Agency for Technical Regulation and Metrology dated December 21, 2004 N 124-st, the interstate standard GOST 78-2004 was put into effect as the national standard of the Russian Federation from January 1, 2006.

5 INSTEAD OF GOST 78-89

6 REVISION. March 2007

1 area of ​​use

1 area of ​​use

This standard applies to wooden sleepers used in the construction, operation and repair of 1 520 mm gauge railway track.

2 Normative references

This standard uses references to the following standards:

GOST 12.1.005-88 System of labor safety standards. General sanitary and hygienic requirements for the air of the working area

GOST 12.1.007-76 Occupational safety standards system. Harmful substances. Classification and general safety requirements

GOST 12.3.009-76 Occupational safety standards system. Loading and unloading works. General safety requirements

GOST 12.3.034-84 Occupational safety standards system. Wood protection works. General safety requirements

GOST 12.3.042-88 System of labor safety standards. Woodworking production. General safety requirements

GOST 12.4.011-89 System of labor safety standards. Means of protection for workers. General requirements and classification

GOST 427-75 Measuring metal rulers. Specifications

GOST 2140-81 Visible defects of wood. Classification, terms and definitions, methods of measurement

GOST 6782.1-75 Softwood lumber. Shrinkage amount

GOST 6782.2-75 Hardwood lumber. Shrinkage amount

GOST 7502-98 Metal measuring tapes. Specifications

GOST 14192-96 Marking of goods

GOST 16369-96 (ISO 4472-83) Timber transport packages. Dimensions

GOST 16588-91 (ISO 4470-81) Sawn products and wooden parts. Methods for determining moisture

GOST 18288-87 Sawmill production. Terms and Definitions

GOST 18321-73 Statistical quality control. Methods for random selection of samples of piece products

GOST 20022.0-93 Wood protection. Security Options

GOST 20022.5-93 Wood protection. Autoclave impregnation with oily protective agents

GOST 20022.14-84 Wood protection. Methods for determining pre-impregnation moisture

3 Definitions

For the purposes of this International Standard, the following terms apply with their respective definitions:

3.1 sleeper: According to GOST 18288.

3.2 edged sleeper: According to GOST 18288.

3.3 semi-edged sleeper: Sleeper in the form of a three-edged beam.

3.4 unedged sleeper: According to GOST 18288.

3.5 untreated sleeper: Sleeper not treated with protective agents.

3.6 impregnated sleeper: Sleeper treated with protective agents.

3.7 deep sleeper: A sleeper subjected to a special treatment by deep tattooing in order to increase the depth of impregnation with protective agents.

3.8 upper layer of the sleeper: The sawn longitudinal surface of the sleeper, which has a smaller width.

3.9 the bottom layer of the sleeper: The sawn longitudinal surface of the sleeper, which has a large width.

3.10 sleeper side: Sawn longitudinal lateral surface of the sleeper.

3.11 wane part of the sleeper: Unsawn sections of the sleeper surface along the upper layer and side.

4 Main types and sizes

4.1 The cross-sectional shape of the sleepers is shown in Figures 1-3.

Figures 1-3. Cross-sectional shape of the sleepers

4.2 According to the dimensions of the cross section, sleepers are made of three types, depending on the purpose:

I - for the main tracks of the 1st and 2nd classes, as well as for the tracks of the 3rd class with a traffic density of more than 50 million tons km gross / km per year at train speeds of more than 100 km / h;
________________
The classification of railway tracks is given in accordance with the Regulations on the system of track facilities on the railways of the Russian Federation, approved by the Ministry of Railways on April 27, 2001.

II - for the main tracks of the 3rd and 4th classes, sidings with intensive work, receiving-departure and sorting tracks at stations;

III - for any tracks of the 5th class, including station, low-traffic access and other tracks with a shunting-export traffic pattern.

4.3 The dimensions of the sleepers, depending on the types, must correspond to those indicated in Table 1.


Table 1

Dimensions in mm

4.4 The dimensions of the sleepers are set for wood with a moisture content of not more than 22%. At higher humidity, the dimensions should be increased by the shrinkage allowance in accordance with GOST 6782.1 - for sleepers made from coniferous wood, and according to GOST 6782.2 - from hardwood.

5 Technical requirements

5.1 The top and bottom faces of the sleepers should be mutually parallel. The non-parallelism of the layers and sides is allowed according to the norms of maximum deviations in the thickness and width of the sleeper, respectively. The sides should be mutually parallel and perpendicular to the top and bottom plates.

5.2 The ends of the sleepers should be cut perpendicular to the longitudinal axis. The bevel of the cut ends of the sleepers in relation to the longitudinal axis should not be more than 20 mm in thickness and width.

5.3 Wane sections of sleepers should be cleared of bark and bast.

5.4 Knots and ridges on unsawn surfaces should be cut flush with the sleeper surface, although the cut may be flat.

5.5 Notches and notches are not allowed on the upper layer of the sleepers in the areas of laying under-rail pads and on other surfaces with the minimum dimensions of the height of the sawn sides, in other cases they should not be more than 20 mm deep and more than 40 mm wide.

5.6 Sleepers must be impregnated with oily protective agents before laying on the road. The quality of the impregnation of the sleepers, as well as the absorption standards for protective agents, must comply with the requirements of GOST 20022.0, GOST 20022.5.

5.7 Sleepers before impregnation should be deeply stabbed. By agreement with the consumer, the sleepers can be not spiked.

5.8 After drying before impregnation, the sleepers must be strengthened against cracking by one of the methods in accordance with the requirements of the technological processes for the impregnation of sleepers at sleeper impregnation plants and the instructions for the maintenance of wooden sleepers, transfer and bridge beams of 1520 mm gauge railways. By agreement with the consumer, the sleepers can be without hardeners.

5.9 Sleepers should be made of pine, spruce, fir, larch and birch wood.

5.10 The moisture content of sleeper wood during manufacture is not standardized.

5.11 The quality of sleeper timber must meet the requirements specified in Table 2.


table 2

5.12 Non-impregnated sleepers should be sorted by each type separately and by species:

- pine;

- spruce and fir;

- larch;

- birch.

Deep-split and crack-reinforced sleepers are sorted separately.

The impregnated sleepers are sorted by type.

5.13 Untreated sleepers should be marked in accordance with Table 3.


Table 3

5.14 Marking should allow identification of the manufacturer.

The marking must be legible and applied by branding or permanent paint on one of the ends of the sleeper.

The marking of sleepers after impregnation is not resumed.

6 Safety requirements

6.1 The manufacture of sleepers in sawmill shops or specialized shops of timber industry enterprises should be carried out in accordance with the requirements of GOST 12.3.042, loading and unloading operations - in accordance with the requirements of GOST 12.3.009, protective equipment for workers - in accordance with GOST 12.4.011.

6.2 Impregnation of sleepers at sleeper impregnation plants should be carried out in accordance with the requirements of GOST 20022.5.

6.3 Working conditions of service personnel when working with hazardous substances - according to GOST 12.1.007.

6.4 Control over the content of harmful substances in the air of the working area - according to GOST 12.1.005.

7 Acceptance rules

7.1 Acceptance of sleepers is carried out in batches. A batch is considered to be any number of sleepers, issued by one quality document.

7.2 The quality document should contain:

- name and address of the organization (supplier enterprise);

- type, species of wood - for untreated sleepers;

- type - for impregnated sleepers;

- the number of sleepers in the party in pieces;

- the designation of this standard;

— confirmation of compliance with this standard.

7.3 The number of sleepers in a batch is determined by continuous recalculation.

7.4 The quality, dimensions and humidity of the sleepers are checked by random control according to GOST 18321, using the "blind" method. The selection of sleepers in the sample is carried out in the amount indicated in table 4.

Table 4

The lot is accepted if all sleepers in the sample comply with the requirements of this standard. Upon receipt of unsatisfactory results, the batch is rejected or, in agreement with the consumer, a complete control of the batch is carried out and the replacement of rejected sleepers is carried out.

8 Control methods

8.1 Determination and measurement of defects in wood and processing - according to GOST 2140.

8.2 Determination of moisture content of wood sleepers - according to GOST 16588.

8.3 Control of pre-impregnation moisture content of sleeper wood - according to GOST 20022.5.

8.4 Quality control of deep sleepers - according to the normative document.

8.5 Quality control of the strengthening of sleepers from cracking - according to the normative document, depending on the method used.

8.6 Quality control of sleepers impregnation - according to GOST 20022.5.

8.7 The dimensions of the sleepers should be controlled:

- the length of the sleeper - according to the smallest distance between its ends;

- the width of the upper and lower layers of the sleeper - in the narrowest places in sections 400 mm long, located at a distance of 380 mm from its ends;

- sleeper thickness - anywhere, but no closer than 380 mm from its ends.

8.8 The dimensions of the sleepers are checked with a straightedge according to GOST 8026 or a metal tape measure RZZH of the 2nd class according to GOST 7502. It is allowed to check the cross-sectional dimensions of the sleepers with a metal ruler in accordance with GOST 427.

9 Transport and storage

9.1 Transportation of sleepers is carried out by transport of all types in accordance with the rules for the carriage of goods in force on the corresponding type of transport. The dimensions of the sleeper packages are in accordance with GOST 16369.

9.2 Sleepers in the warehouses of the manufacturer are stored in piles.

Each stack of sleepers must be laid on a foundation of reinforced concrete, concrete or wooden beams. The height of the foundation must be at least 400 mm.

When storing sleepers in warehouses for more than 10 days, each horizontal row of sleepers in a stack must be separated from the other by spacers from healthy debarked wood. The thickness of the gaskets is at least 20 mm.

In horizontal rows between sleepers there should be gaps 20-40 mm wide.

9.3 Storage of sleepers at sleeper impregnation plants - in accordance with the requirements for the impregnation of sleepers.

Electronic text of the document
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2007

GOST 10629-88

Group Zh83

INTERSTATE STANDARD

REINFORCED CONCRETE SLEEPERS PRE-STRESSED

FOR 1520 mm RAILWAYS

Specifications

Prestressed reinforced concrete sleepers for 1520 mm gauge railways.

Specifications

MKS 91.080.40

OKP 58 6411

Introduction date 1990-01-01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Railways of the USSR

2. APPROVED AND INTRODUCED BY Decree of the State Construction Committee of the USSR dated 11/21/88 N 228

3. REPLACE GOST 10629-78

4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

5. EDITION (July 2004) as amended (IUS 5-90)

This standard applies to reinforced concrete prestressed sleepers for railway tracks with a rail gauge of 1520 mm and rails of the types P75, P65 and P50, which are used by the standard rolling stock of the general railway network of the USSR.

1. TECHNICAL REQUIREMENTS

1.1. Sleepers should be manufactured in accordance with the requirements of this standard for technological documentation approved in the prescribed manner.

1.2. Main parameters and dimensions

1.2.1. Sleepers, depending on the type of rail fastening, are divided into:

Sh1 - for separate terminal-bolt rail fastening (KB type) with bolted attachment of the lining to the sleeper;

Sh2 - for inseparable terminal-bolt rail fastening (BPU type) with bolted attachment of the lining or rail to the sleeper.

1.2.2. The shape and dimensions of the sleepers must correspond to those indicated in Fig. 1-4 and in Table 1. The indicators of material consumption of sleepers are given in Appendix 1.

1 - embedded washer; 2 - wire reinforcement

Section 3-3 is shown in Fig. 3

Damn.1

UNDER RAIL SLEEPER Ш1-1

Damn.2

UNDER RAIL SLEEPER Ш1-2

Sections 4-4, 5-5 and 6-6 are shown in Fig. 2

Damn.3

UNDER RAIL SLEEPER Ш2-1

Damn.4

Table 1

Notes:

1. On the edges adjacent to the sole and ends of the sleeper, chamfers with a width of not more than 15 mm are allowed.

2. By agreement between the manufacturer and the consumer, it is allowed to manufacture sleepers, in which the dimensions and location of the recesses on the sole differ from those indicated in Fig. 1, and the shape and dimensions of the vertical channels for embedded bolts differ from those indicated in Fig. 2-4.

1.2.3. Sleepers are marked with brands in accordance with the requirements of GOST 23009. The sleeper brand consists of two alphanumeric groups separated by a dash.

The first group contains the designation of the sleeper type (clause 1.2.1). In the second group, indicate the version of the under-rail platform (Table 1).

An example of a symbol (brand) of a type Sh1 sleeper, the first version of the under-rail platform:

Sh1-1

1.2.4. Depending on the crack resistance, the accuracy of geometric parameters, the quality of the concrete surfaces, the sleepers are divided into two grades: the first and the second.

Sleepers of the second grade are designed for laying on low-traffic, station and access roads. The supply of sleepers of the second grade is carried out only with the consent of the consumer.

1.3. Characteristics

1.3.1. The sleepers must meet the crack resistance requirements adopted during their design and withstand the control loads specified in Table 2 during testing.

table 2

1.3.2. Sleepers should be made of heavy concrete according to GOST 26633, compressive strength class B40.

1.3.3. The actual strength of concrete (at the design age, transfer and temper) must comply with the requirements of GOST 13015.

1.3.4. The normalized transfer strength of concrete should be taken equal to 32 MPa (326 kgf/cm).

1.3.5. The release strength of concrete is taken equal to the transfer strength of concrete.

1.3.6. The frost resistance grade of concrete must be at least F200.

1.3.7. For concrete sleepers, crushed stone from natural stone or crushed stone from gravel of a fraction of 5-20 mm in accordance with GOST 26633 should be used. It is allowed, by agreement between the manufacturer and the consumer, to use:

crushed stone of a fraction of 20-40 mm in an amount of not more than 10% by weight of crushed stone of a fraction of 5-20 mm according to GOST 26633;

crushed stone from natural stone with a fraction of 5-25 mm in accordance with GOST 7392, subject to its compliance with all other requirements of GOST 26633.

1.3.8. As reinforcement for sleepers, steel wire of a periodic profile of class Bp with a diameter of 3 mm in accordance with GOST 7348 and TU 14-4-1471 should be used.

1.3.9. The nominal number of reinforcing wires in a sleeper is 44. The location of the wires, controlled at the ends of the sleeper, must correspond to that indicated in Fig. 5. The vertical distance in the light between pairs or individual wires, in case of their deviation from the design position, should not be less than 8 mm. It is allowed to turn pairs of wires by 90° while maintaining the above distance.

REINFORCEMENT POSITIONING

at the end of the sleeper

in the middle section of the sleeper

Damn.5

Separating spacers remaining in the concrete body of the sleeper can be used to ensure the design arrangement of the wires (see Appendix 2). It is allowed, upon agreement between the manufacturer and the consumer, to use spacers that differ from those indicated in Appendix 2.

1.3.10. The total force of the initial tension of all reinforcing wires in the package must be at least 358 kN (36.4 tf). The average value of the initial tension force of one wire with their nominal number should be 8.12 kN (827 kgf). The tensile force of individual wires should not differ from the average value by more than 10%.

The decrease in the tension force of individual wires in excess of 10%, caused by the slippage of the wire in the grip, should not be more than one wire in sleepers of the first grade and two wires in sleepers of the second grade.

1.3.11. Deviations from the nominal number of reinforcing wires are allowed, provided that the total tension force of the existing wires is not less than that specified in clause 1.3.10. In this case, the maximum deviations in the number of wires should not exceed ± 2 pcs.

1.3.12. The ends of the prestressed reinforcement should not protrude beyond the end surfaces of the sleepers of the first grade by more than 15 mm and of the second grade by more than 20 mm.

1.3.13. Embedded washers - according to NTD.

1.3.14. The values ​​of the actual deviations of the geometric parameters of the sleepers should not exceed the limit values ​​indicated in Table 3.

Table 3

Note. Dimensions for which limit deviations are not indicated are for reference only.

1.3.15. The slope of the under-rail platforms to the longitudinal axis of the sleeper in a vertical plane passing through the axis (subslope) should be within 1:18 - 1:22 for the first grade sleepers and 1:16 - 1:24 for the second grade sleepers.

1.3.16. The difference in the slopes of the under-rail platforms of different ends of the sleeper in the direction transverse to the axis of the sleeper (propeller ratio) should not exceed 1:80.

1.3.17. The values ​​of the actual deviations of the thickness of the protective layer of concrete to the top row of reinforcement should not exceed, mm:

For sleepers of the first grade;

For sleepers of the second grade.

1.3.18. The dimensions of the shells on concrete surfaces and the gaps in the concrete of the ribs at the sleepers should not exceed the values ​​\u200b\u200bspecified in Table 4.

Table 4

________________

* No more than three sinks on one site.

** No more than one sink.

Notes:

1. It is allowed to have on the longitudinal edges of the under-rail platforms imprints from welds between the fixed under-rail plates and the form.

2. It is allowed to have imprints of diaphragm stiffeners with a depth of no more than 5 mm on the ends of the sleepers.

1.3.19. The depth of the gaps between the wires and concrete at the ends of the sleepers should not exceed 15 mm for sleepers of the first grade and 30 mm for sleepers of the second grade.

1.3.20. The sleepers do not allow:

sagging of concrete in the channels for the bolts, preventing the free installation and rotation of these bolts into the working position;

local influxes of concrete on under-rail platforms;

turning the rail fastening bolts in the sleeper channels when tightening the nuts;

cracks in concrete.

To form channels for bolts, it is allowed to install internal elements, the design and material of which are agreed with the consumer.

1.4. Marking

1.4.1. The marking of sleepers must comply with the requirements of GOST 13015 and this standard.

1.4.2. On the upper surface of the sleepers, stamping during molding is applied:

trademark or short name of the manufacturer - on each sleeper;

year of manufacture (last two digits) - for at least 20% of the sleepers of each batch.

At the end of each sleeper, paint is applied:

OTK stamp;

batch number.

1.4.3. The places for applying markings are indicated in Fig.6.

SLEEPER MARKING

1 - batch number; 2 - trademark or short name of the manufacturer;

3 - year of manufacture; 4 - second grade sleeper mark

Damn.6

It is allowed to apply a trademark or short name of the manufacturer and the year of manufacture on one half of the sleeper.

(Amendment).

1.4.4. Marking inscriptions should be made in font with a height of at least 50 mm.

1.4.5. At both ends of the sleepers of the second grade, a transverse strip 15-20 mm wide is applied with paint (see Fig. 6).

2. ACCEPTANCE

2.1. Sleepers are accepted in batches in accordance with the requirements of GOST 13015 and this standard.

2.2. Sleepers accept:

according to the results of periodic tests - in terms of frost resistance of concrete and the accuracy of the geometric parameters of sleepers, with the exception of the size of sleepers of type Ш1-2;

according to the results of acceptance tests - in terms of crack resistance of sleepers, concrete strength (concrete class in terms of compressive strength, transfer and tempering strength), condition of channels for bolts, size accuracy of sleepers of type Ш1-2, quality of concrete surfaces of sleepers

2.3. Periodic tests of sleepers in terms of frost resistance of concrete are carried out once a year, in terms of the accuracy of geometric parameters - once a month.

2.4. According to the accuracy of the geometric parameters of the sleepers, they are taken according to the results of selective control. With the volume of the batch of sleepers St. 3200 pcs. the sampling plan should be adopted in accordance with GOST 23616.

2.5. For testing for crack resistance, control sleepers are selected from each batch in the amount of 0.3%, but not less than 3 pcs. The batch is accepted for crack resistance if the sleepers selected for testing have withstood the control loads. The sleeper is considered to have passed the crack resistance test if no visible cracks are found in the under-rail and middle sections under control loads. A transverse crack in concrete with a length of more than 30 mm from the edge of the sleeper and an opening at the base of more than 0.05 mm is taken as visible.

In case of an unsatisfactory result of the crack resistance test, it is allowed to divide the batch into smaller ones and present them for repeated crack resistance tests. If the retest result is unsatisfactory, it is allowed to carry out a continuous test of all the sleepers of the batch.

2.6. Acceptance of sleepers according to the state of the channels for bolts and the quality of concrete surfaces is carried out according to the results of continuous control.

3. CONTROL METHODS

3.1. The compressive strength of concrete is determined according to GOST 10180 on a series of samples made from concrete mixture of the working composition, stored under the conditions established by GOST 18105.

3.2. The frost resistance of concrete is determined according to GOST 10060.0 - GOST 10060.4.

3.3. The total tensile force of the reinforcement is controlled according to the readings of the pressure gauge in accordance with GOST 22362 with a parallel connection of a self-recording device to record the tensile force.

The tensile force of the individual wires of the reinforcement is measured by the transverse drawing method according to GOST 22362.

3.4. To measure the linear dimensions of the sleepers, as well as the shells and around the concrete, metal measuring instruments are used according to GOST 13015. The depth of the shells, as well as the gaps between the wires and concrete at the ends of the sleepers, is measured with a caliper with a pointed rod.

3.5. The distance between the thrust edges of the under-rail pads of different ends of the sleeper is measured with a template applied simultaneously to both under-rail pads of the sleeper (Fig. 7).

DIMENSIONAL PRECISION CONTROL SCHEME ( ) AND UNDER RAIL LADES ( And )

1 - template or indicator device

Damn.7

The distances between the edges of the deepening of one end of the sleeper, between the axes of the holes for the bolts and from the axis of the hole to the stop edge, are provided by checking these dimensions on the form of metal plates that form recesses in the under-rail platform during the formation of the sleepers

X.

3.6. The slope of the under-rail areas in the directions longitudinal and transverse to the axis of the sleeper (under-slope and propeller) is measured by an indicator applied simultaneously to both under-rail areas of the sleepers (Fig. 7 and 8).

SCHEME OF PROPELLER CONTROL OF THE SLEEP ( )

1 - measuring device

Damn.8

3.7. The deviation from the straightness of the under-rail platforms is determined according to GOST 13015 by measuring the largest gap between the surface of the platform and the edge of the metal straightedge.

3.8. The depth of embedded washers in concrete is controlled by a device inserted into the sleeper channel and rotated by 90 ° (Fig. 9).

DIAGRAM OF A DEVICE FOR MEASURING THE DEPTH OF SEALING WASHER

1 - handle; 2 - stock; 3 - scale; 4 - pointer; 5 - body; 6 - head

Damn.9

The absence of concrete influxes in the channels of the sleeper that prevent the installation and rotation of the bolt into the working position, as well as the turning of the bolt when screwing the nut, is checked with a mortgage bolt in accordance with GOST 16017 with maximum positive deviations of the head dimensions. Check all four channels of the controlled sleeper

3.9. The thickness of the protective layer of concrete over the upper row of reinforcement is controlled in the middle of the sleeper by the method indicated in Fig. 10. It is allowed, by agreement between the manufacturer and the consumer, to control the thickness at the ends of the sleeper with a metal ruler.

SCHEME FOR MEASURING THE THICKNESS OF THE PROTECTIVE LAYER OF CONCRETE

ABOVE THE TOP ROW OF REINFORCEMENT IN THE MIDDLE OF THE SLEEPER

1 - rail; 2 - wire of the upper row of reinforcement

Damn.10

3.10. The height of the sleeper is checked with a caliper in cross sections in the middle of each under-rail platform and in the middle of the sleeper.

3.11. Each sleeper selected for testing for crack resistance is tested with a static load sequentially in the under-rail and middle sections according to the schemes shown in Fig. 11.

SCHEMES OF TESTING THE SLEEP FOR CRACK RESISTANCE

in the rail section

in the middle section

1 - steel plate with a slope of the lower base 1:20, 250x100 mm in size, with an average thickness of 25 mm;

2 - steel plate measuring 250x100x25 mm; 3 - rubber gasket measuring 250x100x10 mm;

4 - steel roller with a diameter of 40 and a length of 250 mm

Damn 11

The load is evenly increased with an intensity of not more than 1 kN / s (100 kgf / s) and brought to the control indicated in table.2. This load is maintained constant for 2 minutes, after which the side surfaces are examined on both sides of the sleeper at the tested section in order to detect visible cracks in the tension zone of the concrete. The concrete surface is not wetted. Illumination of the concrete surface - not less than 3000 lx. A metal ruler is used to measure the length of cracks, and a measuring magnifier according to GOST 25706 with a division value of 0.05 mm is used to measure the crack opening width.

3.12. The list of fixtures, indicators and templates for controlling the geometric parameters of the sleepers is given in Appendix 3.

3.13. All non-standard measuring and testing instruments must pass metrological certification in accordance with GOST 8.326*.

________________

* PR 50.2.009-94 is in force on the territory of the Russian Federation.

4. TRANSPORT AND STORAGE

4.1. Transportation and storage of sleepers should be carried out in accordance with the requirements of GOST 13015 and this standard.

4.2. Sleepers should be transported and stored in stacks in horizontal rows in working position (sole down). The height of the stack should be no more than 16 rows.

Linings for sleepers and gaskets between them in a stack should be placed in the recesses of the under-rail platforms of the sleepers. The thickness of wooden linings and spacers must be at least 50 mm. It is allowed, by agreement between the manufacturer and the consumer, to use wooden spacers with a cross section of at least 40x40 mm when they are located at a distance of 30-40 mm from the thrust edges of the recesses in the under-rail areas of the sleepers.

4.3. Sleepers are transported in gondola cars or cars. Transportation of sleepers of different brands and grades in the same gondola car or car is not allowed.

5. MANUFACTURER WARRANTY

5.1. The manufacturer guarantees the compliance of sleepers with the requirements of this standard, provided that the consumer observes the rules for their operation, transportation and storage.

5.2. The warranty period for the operation of sleepers is three years from the date of laying them on the road. The calculation of the warranty period begins no later than 9 months from the date of receipt of the sleepers by the consumer.

ATTACHMENT 1

Mandatory

INDICATORS OF MATERIAL CONSUMPTION OF SLEEPERS

Indicators of material consumption of sleepers made according to the standard flow-aggregate technology in ten-cavity forms (excluding technological and production losses outside the form):

embedded washers

11.8 kg

APPENDIX 2

SPACER SPACER

Material - Art 3.

Thickness - 1 mm.

Weight - 0.037 kg.

Devil 12

APPENDIX 3

Reference

LIST OF DEVICES, INDICATORS AND TEMPLATES

FOR CONTROL OF GEOMETRIC PARAMETERS OF SLEEPERS

To control the geometrical parameters of reinforced concrete sleepers, it is recommended to use a set of fixtures, indicators and templates developed by the Industroyproekt Institute and adopted by the USSR Ministry of Building Materials Industry.

Electronic text of the document

prepared by CJSC "Kodeks" and checked against:

official publication

Moscow: IPK Standards Publishing House, 2004