1. DEVELOPED by the Central Research and Design and Experimental Institute of Organization, Mechanization and Technical Assistance to the Construction of the Gosstroy of the USSR

This standard applies to inventory fencing of workplaces at height and passages to them (hereinafter referred to as fencing) used to protect a person from falling in places of height difference during the construction of new and reconstruction of existing buildings and structures.

The standard does not apply to shields and decks designed to cover horizontal openings, protective canopies, horizontal safety devices, as well as to fences that are integral structural elements means of scaffolding, mounting and other types of technological equipment.

2.1. Guardrails shall be constructed in accordance with the requirements of this standard and technical documentation approved in the prescribed manner.

2.2.1. Protective railings are designed for strength and resistance to the alternate action of both horizontal and vertical uniformly distributed standard loads of 400 N/m (40 kgf/m) applied to the handrail.

In places intended for stay of no more than two people, it is allowed to take as a normative concentrated load equal to 400 N (40 kgf), alternately applied both horizontally and vertically anywhere along the length of the handrail.

2.2.2. The safety fences are calculated for strength and resistance to the action of a horizontal concentrated load of at least 700 N (70 kgf) applied at any point along the height of the fence in the middle of the span, and the outer safety fences, in addition, for strength to the action of a load weighing 100 kg falling from height of 1 m from the level of the workplace in the middle of the span.

2.2.5. The height of protective and safety fences (the distance from the level of the workplace to the lowest point of the upper horizontal element) must be at least 1.1 m, signal - from 0.8 to 1.1 m inclusive.

2.2.6. The distance between the attachment points of protective and safety fences to the stable structures of a building or structure (the length of one section of the fence) should not exceed 6.0 m, signal - allowed up to 12.0 m.

GOST 12.4.059-89

Group T58

INTERSTATE STANDARD

SYSTEM OF WORK SAFETY STANDARDS

CONSTRUCTION

SAFETY INVENTORY FENCES

General specifications

Occupational safety standards system.
Construction. Protective inventory safeguards.
General specifications

Introduction date 1990-01-01

INFORMATION DATA

1. DEVELOPED by the Central Research and Design and Experimental Institute of Organization, Mechanization and Technical Assistance to the Construction of the Gosstroy of the USSR

INTRODUCED by the State Construction Committee of the USSR

2. APPROVED AND PUT INTO EFFECT by the Decree of the State building committee USSR dated 13.04.89 N 66

3. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS

4. REPUBLICATION. July 2001

This standard applies to inventory fencing of workplaces at height and passages to them (hereinafter referred to as fencing) used to protect a person from falling in places of height difference during the construction of new and reconstruction of existing buildings and structures.

The standard does not apply to shields and decks designed to cover horizontal openings, protective canopies, horizontal safety devices, as well as fences that are integral structural elements of scaffolding, mounting and other types of technological equipment.

Explanations of the terms used in this standard are given in annex 1.

1.1. The type of fencing is set according to the totality of the characterized properties indicated in the table.

1.2. The following structure is set symbol fences

An example of a symbol for a protective external support fence:

Fencing Zshch Nzh Op GOST 12.4.059-89

1.3. Fencing schemes and their symbols are given in Appendix 2.

2. TECHNICAL REQUIREMENTS

2.1. Fencing must be manufactured in accordance with the requirements of this standard and technical documentation approved in the prescribed manner.

2.2. Characteristics

2.2.1. Protective railings are designed for strength and resistance to the alternate action of both horizontal and vertical uniformly distributed standard loads of 400 N/m (40 kgf/m) applied to the handrail.

In places intended for stay of no more than two people, it is allowed to take as a normative concentrated load equal to 400 N (40 kgf), alternately applied both horizontally and vertically anywhere along the length of the handrail.

2.2.2. The safety fences are calculated for strength and resistance to the action of a horizontal concentrated load of at least 700 N (70 kgf) applied at any point along the height of the fence in the middle of the span, and the outer safety fences, in addition, for strength to the action of a load weighing 100 kg falling from height of 1 m from the level of the workplace in the middle of the span.

2.2.3. The load safety factor for the protective and safety fence should be taken as 1, 2.

2.2.4. The value of the deflection of the handrail of the protective fence under the influence of the calculated load should be no more than 0.1 m.

2.2.5. The height of protective and safety fences (the distance from the level of the workplace to the lowest point of the upper horizontal element) must be at least 1.1 m, signal - from 0.8 to 1.1 m inclusive.

2.2.6. The distance between the attachment points of protective and safety fences to the stable structures of a building or structure (the length of one section of the fence) should not exceed 6.0 m, signal - allowed up to 12.0 m.

2.2.7. The distance from the boundary of the difference in height to the fence should be for:

Outdoor protective and safety - within 0.20-0.25 m;

Internal safety - not less than 0.30 m;

Signal - not less than 2.0 m.

Protective internal fences are installed without limiting the distance from the boundary of the difference in height.

2.2.8. Distance between horizontal elements in vertical plane the protective fence should be no more than 0.45 m.

2.2.9. The height of the side element of the protective fence must be at least 0.10 m.

2.2.10. Fill cell size mesh fences should be no more than 0.05 m.

2.2.11. The design of fastening fences to building structures should exclude the possibility of their spontaneous unfastening.

2.2.12. Signal fences should be made in the form of a rope, not designed for loads and attached to racks or stable structures of the building (structure), with safety signs hung in the form of regular triangles yellow color with a black border with a side of at least 100 mm. Registration of safety signs - according to GOST 12.4.026, the distance between the signs should be no more than 6 m.

2.2.13. The breaking load of a mesh of synthetic mesh should be at least 1750 N (175 kgf).

2.2.14. When calculating the strength of mesh fences, it is necessary to take into account the service life of mesh materials and their aging.

2.2.15. Details and assembly units of fences, having a mass of more than 25 kg, must have mounting loops or other devices for slinging.

2.2.16. Elements of fencing structures should not have sharp corners, cutting edges, burrs.

2.2.17. The surface of the filling elements of protective and safety fences must be painted with yellow signal paint in accordance with GOST 12.4.026.

Before painting with disperse dyes, synthetic mesh should be impregnated with BT-577 bituminous varnish according to GOST 5631, diluted with white spirit or turpentine.

2.3. Requirements for materials, components and protective coatings

2.3.1. For the manufacture of fences, steel grade C235 is used in accordance with GOST 27772, aluminum alloys of grades AMg6 and 1915 in accordance with GOST 4784, lumber from wood conifers not lower than the 2nd grade according to GOST 8486, mesh made of synthetic materials, etc.

2.3.2. Synthetic mesh fabrics should be made of nylon or lavsan twisted ropes with a diameter of 3.1 mm, with technological shrinkage during finishing no more than 10%, with standard humidity no more than 1%. The mesh cloths are braided along the contour with a nylon cord with a diameter of 8 mm. The strength characteristics of the mesh materials during testing must correspond to the design ones.

2.3.3. Rolled metal fencing elements must be primed and painted at the factory paintwork materials, corresponding to a slightly aggressive environment according to SNiP 2.03.11. Coating class - VII according to GOST 9.032.

Before painting, the surface of the fencing elements must be cleaned to the 4th degree in accordance with GOST 9.402.

2.4. Completeness

2.4.1. The set of fences supplied to the consumer enterprise must include fences of the same type in an amount of up to 20 pieces, an instruction manual, a quality document.

2.5. Labeling and packaging

2.5.1. Fencing elements of the same name (posts, frames, horizontal rod elements, etc.) made of rolled metal must be bundled with wire.

2.5.2. Small parts (collars, clamps, etc.) must be packed in wooden boxes according to GOST 18617.

2.5.3. Net sheets must be packed in bags.

2.5.4. Each package and box with metal-rolled fencing elements, as well as a bag with mesh sheets, must have a plate containing:

Trademark and name of the manufacturer;

Conditional designation of the fence;

Date of manufacture (month, year);

For mesh sheets, the date of the last test and strength data.

2.5.5. The documentation included in the scope of delivery must be wrapped in a bag of polyethylene film in accordance with GOST 10354 and securely attached to the set with wire or transferred to the consumer upon direct receipt of the set of fences.

2.6. The service life of the fences, provided that the consumer complies with the requirements of the operational documentation, is indicated in specifications on fences of a particular type and must be at least:

5 years - metal elements;

2.5 years - wooden elements and synthetic meshes.

3. ACCEPTANCE

3.1. To check the compliance of fences with the requirements of this standard, the manufacturer must carry out an acceptance inspection of fences, as a result of which a decision is made on their suitability for supply and use.

3.2. Each fence must be subjected to acceptance control in the following sequence:

Completeness check;

Checking the compliance of the material and dimensions with the working drawings;

Checking the integrity of elements;

Checking the quality of welds, ropes, bolted, nailed and riveted joints for compliance with the requirements of technical documentation;

Checking the compliance of signal coloring with the requirements of GOST 12.4.026.

3.3. The results of the acceptance are reflected in the quality document.

4. CONTROL METHODS

4.1. The presence of cracks, cuts, kinks, sharp edges, burrs and welds is checked visually before painting.

4.2. The quality of the materials from which the fencing elements are made should be established by certificates or determined by the results of laboratory tests.

4.3. The quality of the coloring of the elements of the fences is determined visually in accordance with GOST 9.032.

4.4. Checking the geometric dimensions of the fences is carried out measuring instruments or templates providing measurement accuracy up to 1 mm.

5. TRANSPORT AND STORAGE

5.1. Transportation and storage of fences should be carried out in accordance with conditions 5 in accordance with GOST 15150.

5.2. Loading, unloading, transportation and storage of fences should be carried out in conditions that exclude their deformation and damage. paintwork. It is not allowed to drop fences during unloading, transport them by dragging.

5.3. Synthetic mesh should be stored in places that exclude their contamination, action high temperature and exposure to direct sunlight.

6. INSTRUCTIONS FOR USE

6.1. Guardrails must be operated in accordance with the requirements of this standard, SNiP III-4 and the instructions for the operation of guardrails.

6.2. Condition control and correct application fencing during operation, installation and dismantling is assigned to engineering and technical workers of construction and installation organizations (foremen, foremen, district mechanics), determined by order of the organization.

6.3. Fencing should be included in the standard set and be assigned to a complex or specialized team by order of the construction and installation organization, and specially trained persons were selected from among the workers of the team, who should be entrusted with the implementation of their installation and dismantling.

6.4. Periodic inspection of the fences should be carried out by the foreman (foreman) and consist of a visual inspection (check) of the good condition of the assembly units and elements of the fence.

6.5. Fencing elements with detected faults are subject to replacement or repair.

6.6. Operation of fences with synthetic materials allowed at temperature environment from minus 40 to plus 40 °C.

6.7. hot work should be carried out at a distance of at least 1.5 m from synthetic nets to avoid reducing their strength.

6.8. Installation and removal of guards should be carried out in technological sequence ensuring the safety of construction and installation works. The length of the fenced area is set in technological maps.

6.9. Persons performing the installation and removal of fences must use safety belts for fastening during work to securely installed structures of the building (structure) or to a safety rope.

6.10. The dismantled fences must be placed in containers for their delivery by a crane to the next installation horizon.

7. MANUFACTURER WARRANTY

7.1. The manufacturer guarantees that the fences comply with the requirements of this standard.

7.2. The warranty period for the operation of fences, provided that the consumer complies with the conditions of transportation, storage and operation established by this standard, is 18 months from the date of commissioning.

ATTACHMENT 1
Reference

TERMS AND EXPLANATIONS

Approvedand put into effect

Decree of the Gosstroy of the USSR

STATE STANDARD OF THE UNION OF THE SSR

SYSTEM OF WORK SAFETY STANDARDS

CONSTRUCTION.

SAFETY INVENTORY FENCES

GENERAL SPECIFICATIONS

Occupational safety standards system.

Construction.Protective inventory safeguards.

General specifications

GOST 12.4.059-89

Group T58

OKP 522517

Introduction date

INFORMATION DATA

1. Developed by the Central Research and Design and Experimental Institute of Organization, Mechanization and Technical Assistance to the Construction of the USSR State Construction Committee.

Introduced by the State Construction Committee of the USSR.

Artists: V.A. Alekseev, Ph.D. tech. sciences (topic leader); N.D. Levinson; IN AND. Brodsky, Ph.D. tech. sciences; V.V. Botygin; V.A. Belyakov; V.V. Bakonin.

2. Approved and put into effect by the Decree of the State Construction Committee of the USSR of 04/13/1989 N 66.

3. Instead of GOST 12.4.059-78.

4. Reference normative and technical documents

─────────────────────────────────────────┬────────────────────────

─────────────────────────────────────────┼────────────────────────

GOST 9.032-74│2.3.3; 4.3

GOST 9.402-80│2.3.3

GOST 12.4.026-76│2.2.12; 2.2.17; 3.2

GOST 4784-74│2.3.1

GOST 5631-79│2.2.17

GOST 8486-86│2.3.1

GOST 10354-82│2.5.5

GOST 15150-69│5.1

GOST 18617-83│2.5.2

GOST 27772-88│2.3.1

SNiP 2.03.11-85│2.3.3

SNiP III-4-80│6.1

This standard applies to inventory fencing of workplaces at height and passages to them (hereinafter referred to as fencing) used to protect a person from falling in places of height difference during the construction of new and reconstruction of existing buildings and structures.

The standard does not apply to shields and decks designed to cover horizontal openings, protective canopies, horizontal safety devices, as well as to fences that are integral structural elements of scaffolding, mounting and other types of technological equipment.

Explanations of the terms used in this standard are given in Annex 1.

1. TYPES

1.1. The type of fencing is set according to the totality of the characterized properties indicated in the table.

─────────────────────────────┬───────────────────┬────────────────

Characterized property │ Type name │ Type designation

│fencing by│fencing by

│ characterized by │ characterized

│property│property

1. Functional│Protective│Protection

purpose├───────────────────────────────────────

│Insurance│ St

├───────────────────┼────────────────

│Signal│Сг

─────────────────────────────┼───────────────────┼────────────────

2. Installation location│Indoor│Outdoor

relative to the border of the worker├───────────────────

places near the drop along│Outer│Nzh

height││

─────────────────────────────┼───────────────────┼────────────────

3. Mounting method │ Support │ About p

railings to building elements

│Mounted│Нв

1.2. The following structure of the designation of fences is established

X X X X

─┬──┬──┬──┬─

└──────┼──────┼──────┼────────── Type designation

│││by function

└──────┼──────┼─────────── Type designation of fencing

││according to the place of installation regarding

││height difference boundaries

└──────┼─────────── Type designation of fencing

│according to the method of fastening

└─────────── Symbol of this standard

An example of a symbol for a protective external support fence:

Fencing Zshch Nzh O p GOST 12.4.059-89

1.3. Fencing schemes and their symbols are given in Appendix 2.

2. TECHNICAL REQUIREMENTS

2.1. Fencing must be manufactured in accordance with the requirements of this standard and technical documentation approved in the prescribed manner.

2.2. Characteristics

2.2.1. Protective railings are designed for strength and resistance to the alternate action of both horizontal and vertical uniformly distributed standard loads of 400 N/m (40 kgf/m) applied to the handrail.

In places intended for stay of no more than two people, it is allowed to take as a normative concentrated load equal to 400 N (40 kgf), alternately applied both horizontally and vertically anywhere along the length of the handrail.

2.2.2. The safety fences are calculated for strength and resistance to the action of a horizontal concentrated load of at least 700 N (70 kgf) applied at any point along the height of the fence in the middle of the span, and the outer safety fences, in addition, for strength to the action of a load weighing 100 kg falling from height of 1 m from the level of the workplace in the middle of the span.

2.2.3. The load safety factor for the protective and safety fence should be taken as 1.2.

2.2.4. The value of the deflection of the handrail of the protective fence under the influence of the calculated load should be no more than 0.1 m.

2.2.5. The height of protective and safety fences (the distance from the level of the workplace to the lowest point of the upper horizontal element) must be at least 1.1 m, signal - from 0.8 to 1.1 m inclusive.

2.2.6. The distance between the attachment points of protective and safety fences to the stable structures of a building or structure (the length of one section of the fence) should not exceed 6.0 m, signal - allowed up to 12.0 m.

2.2.7. The distance from the boundary of the difference in height to the fence should be for:

external protective and safety - within 0.20 - 0.25 m;

internal safety lines - not less than 0.30 m;

signal - not less than 2.0 m.

Protective internal fences are installed without limiting the distance from the boundary of the difference in height.

2.2.8. The distance between horizontal elements in the vertical plane of the protective fence should be no more than 0.45 m.

2.2.9. The height of the side element of the protective fence must be at least 0.10 m.

2.2.10. The mesh size of mesh fences should be no more than 0.05 m.

2.2.11. The design of fastening fences to building structures should exclude the possibility of their spontaneous unfastening.

2.2.12. Signal fences must be made in the form of a rope not designed for loads and attached to posts or stable structures of the building (structure), with safety signs hung in the form of regular yellow triangles with a black border with a side of at least 100 mm. Registration of safety signs - in accordance with GOST 12.4.026, the distance between signs should be no more than 6 m.

2.2.13. The breaking load of a mesh of synthetic mesh should be at least 1750 N (175 kgf).

2.2.14. When calculating the strength of mesh fences, it is necessary to take into account the service life of mesh materials and their aging.

2.2.15. Details and assembly units of fences, having a mass of more than 25 kg, must have mounting loops or other devices for slinging.

2.2.16. Elements of fencing structures should not have sharp corners, cutting edges, burrs.

2.2.17. The surface of the filling elements of protective and safety fences must be painted with yellow signal paint in accordance with GOST 12.4.026.

Synthetic mesh before painting with disperse dyes must be impregnated with BT-577 bituminous varnish according to GOST 5631, diluted with white spirit or turpentine.

2.3. Requirements for materials, components and protective coatings

2.3.1. For the manufacture of fences, rolled steel grade C235 according to GOST 27772, aluminum alloys grades AMg6 and 1915 according to GOST 4784, softwood sawn timber of at least grade 2 according to GOST 8486, nets made of synthetic materials, etc.

2.3.2. Synthetic mesh fabrics should be made of nylon or lavsan twisted ropes with a diameter of 3.1 mm, with technological shrinkage during finishing no more than 10%, with standard humidity no more than 1%. The mesh cloths are braided along the contour with a nylon cord with a diameter of 8 mm. The strength characteristics of the mesh materials during testing must correspond to the design ones.

2.3.3. Rolled metal fencing elements must be primed and painted at the manufacturer with paints and varnishes that comply with a slightly aggressive environment according to SNiP 2.03.11-85. Coating class - VII according to GOST 9.032.

Before painting, the surface of the fencing elements must be cleaned to the 4th degree in accordance with GOST 9.402.

2.4. Completeness

2.4.1. The set of fences supplied to the consumer enterprise must include fences of the same type in an amount of up to 20 pieces, an instruction manual, a quality document.

2.5. Labeling and packaging

2.5.1. Fencing elements of the same name (posts, frames, horizontal rod elements, etc.) made of rolled metal must be bundled with wire.

2.5.2. Small parts (clamps, clamps, etc.) must be packed in wooden boxes in accordance with GOST 18617.

2.5.3. Net sheets must be packed in bags.

2.5.4. Each package and box with metal-rolled fencing elements, as well as a bag with mesh sheets, must have a plate containing:

trademark and name of the manufacturer;

conditional designation of the fence;

date of manufacture (month, year);

mass;

for mesh sheets, the date of the last test and strength data.

2.5.5. The documentation included in the delivery set must be wrapped in a polyethylene film bag in accordance with GOST 10354 and securely attached to the set with a wire or handed over to the consumer upon direct receipt of the set of fences.

2.6. The service life of fences, provided that the consumer complies with the requirements of operational documentation, is indicated in the technical specifications for fences of a particular type and must be at least:

5 years - metal elements;

2.5 years - wooden elements and synthetic mesh sheets.

3. ACCEPTANCE

3.1. To check the compliance of fences with the requirements of this standard, the manufacturer must carry out an acceptance inspection of fences, as a result of which a decision is made on their suitability for supply and use.

3.2. Each fence must be subjected to acceptance control in the following sequence:

completeness check;

checking the compliance of the material and dimensions with the working drawings;

element integrity check;

checking the quality of welds, ropes, bolted, nailed and riveted joints for compliance with the requirements of technical documentation;

verification of compliance of signal coloring with the requirements of GOST 12.4.026.

3.3. The results of the acceptance are reflected in the quality document.

4. CONTROL METHODS

4.1. The presence of cracks, cuts, kinks, sharp edges, burrs and welds is checked visually before painting.

4.2. The quality of the materials from which the fencing elements are made should be established by certificates or determined by the results of laboratory tests.

4.3. The quality of the coloring of the elements of the fences is determined visually in accordance with GOST 9.032.

4.4. Checking the geometric dimensions of the fences is carried out with measuring tools or templates that provide measurement accuracy up to 1 mm.

5. TRANSPORT AND STORAGE

5.1. Transportation and storage of fences should be carried out in accordance with conditions 5 in accordance with GOST 15150.

5.2. Loading, unloading, transportation and storage of fences should be carried out in conditions that exclude their deformation and damage to the paintwork. It is not allowed to drop fences during unloading, transport them by dragging.

5.3. Synthetic mesh should be stored in places that exclude contamination, high temperatures and direct sunlight.

6. INSTRUCTIONS FOR USE

6.1. Guardrails must be operated in accordance with the requirements of this standard, SNiP III-4-80 and the instructions for the operation of guardrails.

6.2. Control over the serviceable condition and correct use of fences during operation, installation and dismantling is assigned to engineering and technical workers of construction and installation organizations (foremen, foremen, district mechanics), determined by order of the organization.

6.3. Fencing should be included in the standard set and be assigned to an integrated or specialized team by order of the construction and installation organization, and specially trained persons should be assigned from among the workers of the team, who should be assigned to perform their installation and dismantling.

6.4. Periodic inspection of the fences should be carried out by the foreman (foreman) and consist of a visual inspection (check) of the good condition of the assembly units and elements of the fence.

6.5. Fencing elements with detected faults are subject to replacement or repair.

6.6. The operation of fences with synthetic materials is allowed at an ambient temperature of minus 40 to plus 40 °C.

6.7. Hot work should be carried out at a distance of at least 1.5 m from synthetic meshes to avoid reducing their strength.

6.8. Installation and removal of fences should be carried out in a technological sequence that ensures the safety of construction and installation work. The length of the fenced area is set in technological maps.

6.9. Persons performing the installation and removal of fences must use safety belts for fastening during work to securely installed structures of the building (structure) or to a safety rope.

6.10. The dismantled fences must be placed in containers for their delivery by a crane to the next installation horizon.

7. MANUFACTURER WARRANTY

7.1. The manufacturer guarantees that the fences comply with the requirements of this standard.

7.2. The warranty period for the operation of fences, subject to the consumer's compliance with the conditions of transportation, storage and operation established by this standard, is 18 months from the date of commissioning.

Attachment 1

Reference

TERMS AND EXPLANATIONS

───────────────────────┬──────────────────────────────────────────

Term│Explanation

───────────────────────┼──────────────────────────────────────────

Fencing│Fencing workplaces at height

safety│and passages to them, the design of which

│located in a vertical plane,

employees to prevent falls

│person

Protective fencing│Safety fencing serving

│to prevent unintentional

│human access to the border of the drop

│altitude

Guardrail│Safety guardrail,

safety device that ensures the retention of a person during

│the loss of stability near the boundary

│height difference

Signal fencing│Safety fencing,

│destined to indicate dangerous

│zone within which there is

│danger of falling from a height

Internal fencing│Safety fencing,

│installed within the workplace

│to the border of the difference in height

External fencing│Safety fencing,

│installed outside of work

│places near the boundary of the difference in height

Fence infill│Fence element located

│between supports or vertical

│surfaces of building structures

Support fence│Safety fence with

│ element of the supporting structure (support, frame

│etc.) used for hanging

│filling

Hinged fencing│Safety fencing that does not have

│bearing structure and hanging

│directly to construction

│building structure

Annex 2

Reference

SCHEME

FENCES AND EXAMPLES OF THEIR DESIGNATIONS

Protective inner support railing

(Fencing Zsch Vn O p GOST 12.4.059-89)

4 - floor slab

Crap. one

Protective outer support railing

(Fencing Zshch Nzh O p GOST 12.4.059-89)

a) fastening to a blank wall

b) fastening for a window opening

1 - filling; 2 - rack; 3 - side board;

4 - place of attachment (to the wall or behind the window opening);

5 - building wall

Crap. 2

Protective internal hanging railing

(Fencing Zsch Vn Nv GOST 12.4.059-89)

1 - filling; 2 - building column; 3 - side board;

4 - clamp (clamp); 5 - floor slab; 6 - lanyard

Crap. 3

Safety internal hinged protection

(Fence St Vn Nv GOST 12.4.059-89)

1 - building column; 2 - filling; 3 - clamp;

4 - floor slab

Crap. four

Safety outer support railing

(Fencing St Nr O p GOST 12.4.059-89)

1 - frame; 2 - filling; 3 - place of fastening of the fence

to the wall of the building (through the embedded part); 4 - building wall

Crap. 5

Signal inner support railing

(Fencing SG Vn O p GOST 12.4.059-89)

1 - rack; 2 - filling; 3 - safety sign;

4 - floor slab

Crap. 6

Signal internal hinged protection

(Fencing Sg Vn Nv GOST 12.4.059-89)

1 - building column; 2 - floor slab; 3 - filling;

4 - clamp; 5 - safety sign

page 1

page 2

page 3

page 4

page 5

page 6

page 7

page 8

page 9

INTERSTATE STANDARD

This standard applies to inventory fencing of workplaces at height and passages to them (hereinafter referred to as fencing) used to protect a person from falling in places of height difference during the construction of new and reconstruction of existing buildings and structures.

The standard does not apply to shields and decks designed to cover horizontal openings, protective canopies, horizontal safety devices, as well as fences that are integral structural elements of scaffolding, mounting and other types of technological equipment.

Explanations of the terms used in this standard are given in annex 1.

1. TYPES

1.1. The type of fencing is set according to the totality of the characterized properties indicated in the table.

1.2. The following structure of the designation of fences is established

An example of a symbol for a protective external support fence:

1.3. Fencing schemes and their symbols are given in Appendix 2.

2. TECHNICAL REQUIREMENTS

2.1. Fencing must be manufactured in accordance with the requirements of this standard and technical documentation approved in the prescribed manner.

2.2. Characteristics

2.2.1. Protective railings are designed for strength and resistance to the alternate action of both horizontal and vertical uniformly distributed standard loads of 400 N/m (40 kgf/m) applied to the handrail.

In places intended for stay of no more than two people, it is allowed to take as a normative concentrated load equal to 400 N (40 kgf), alternately applied both horizontally and vertically anywhere along the length of the handrail.

2.2.2. The safety fences are calculated for strength and resistance to the action of a horizontal concentrated load of at least 700 N (70 kgf) applied at any point along the height of the fence in the middle of the span, and the outer safety fences, in addition, for strength to the action of a load weighing 100 kg falling from height of 1 m from the level of the workplace in the middle of the span.

2.2.3. The load safety factor for the protective and safety fence should be taken as 1, 2.

2.2.4. The value of the deflection of the handrail of the protective fence under the influence of the calculated load should be no more than 0.1 m.

2.2.5. The height of protective and safety fences (the distance from the level of the workplace to the lowest point of the upper horizontal element) must be at least 1.1 m, signal - from 0.8 to 1.1 m inclusive.

2.2.6. The distance between the attachment points of protective and safety fences to the stable structures of a building or structure (the length of one section of the fence) should not exceed 6.0 m, signal - allowed up to 12.0 m.

2.2.7. The distance from the boundary of the difference in height to the fence should be for:

external protective and safety - within 0.20 - 0.25 m;

internal safety lines - not less than 0.30 m;

signal - not less than 2.0 m.

Protective internal fences are installed without limiting the distance from the boundary of the difference in height.

2.2.8. The distance between horizontal elements in the vertical plane of the protective fence should be no more than 0.45 m.

2.2.9. The height of the side element of the protective fence must be at least 0.10 m.

2.2.10. The mesh size of mesh fences should be no more than 0.05 m.

2.2.11. The design of fastening fences to building structures should exclude the possibility of their spontaneous unfastening.

2.2.12. Signal fences must be made in the form of a rope not designed for loads and attached to posts or stable structures of the building (structure), with safety signs hung in the form of regular yellow triangles with a black border with a side of at least 100 mm. Registration of safety signs - according to GOST 12.4.026, the distance between the signs should be no more than 6 m.

2.2.13. The breaking load of a mesh of synthetic mesh should be at least 1750 N (175 kgf).

2.2.14. When calculating the strength of mesh fences, it is necessary to take into account the service life of mesh materials and their aging.

2.2.15. Details and assembly units of fences, having a mass of more than 25 kg, must have mounting loops or other devices for slinging.

2.2.16. Elements of fencing structures should not have sharp corners, cutting edges, burrs.

2.2.17. The surface of the filling elements of protective and safety fences must be painted with yellow signal paint in accordance with GOST 12.4.026.

Before painting with disperse dyes, synthetic mesh should be impregnated with BT-577 bituminous varnish according to GOST 5631, diluted with white spirit or turpentine.

2.3. Requirements for materials, components and protective coatings

2.3.1. For the manufacture of fences, rolled steel grade C235 according to GOST 27772, aluminum alloys grades Amg6 and 1915 according to GOST 4784, softwood sawn timber of at least grade 2 according to GOST 8486, nets made of synthetic materials, etc.

2.3.2. Synthetic mesh fabrics should be made of nylon or lavsan twisted ropes with a diameter of 3.1 mm, with technological shrinkage during finishing no more than 10%, and standard humidity no more than 1%. The mesh cloths are braided along the contour with a nylon cord with a diameter of 8 mm. The strength characteristics of the mesh materials during testing must correspond to the design ones.

2.3.3. Rolled metal fencing elements must be primed and painted at the manufacturer with paints and varnishes that comply with a slightly aggressive environment according to SNiP 2.03.11-85. Coating class - VII according to GOST 9.032.

Before painting, the surface of the fencing elements must be cleaned to the 4th degree in accordance with GOST 9.402.

2.4. Completeness

2.4.1. The set of fences supplied to the consumer enterprise must include fences of the same type in an amount of up to 20 pieces, an instruction manual, a quality document.

2.5. Labeling and packaging

2.5.1. Fencing elements of the same name (posts, frames, horizontal rod elements, etc.) made of rolled metal must be bundled with wire.

2.5.2. Small parts (clamps, clamps, etc.) must be packed in wooden boxes in accordance with GOST 18617.

2.5.3. Net sheets must be packed in bags.

2.5.4. Each package and box with metal-rolled fencing elements, as well as a bag with mesh sheets, must have a plate containing:

trademark and name of the manufacturer;

conditional designation of the fence;

date of manufacture (month, year);

for mesh sheets, the date of the last test and strength data.

2.5.5. The documentation included in the delivery set must be wrapped in a polyethylene film bag in accordance with GOST 10354 and securely attached to the set with a wire or handed over to the consumer upon direct receipt of the set of fences.

2.6. The service life of fences, provided that the consumer complies with the requirements of operational documentation, is indicated in the technical specifications for fences of a particular type and must be at least:

5 years - metal elements;

2.5 years - wooden elements and synthetic mesh sheets.

3. ACCEPTANCE

3.1. To check the compliance of fences with the requirements of this standard, the manufacturer must carry out an acceptance inspection of fences, as a result of which a decision is made on their suitability for supply and use.

3.2. Each fence must be subjected to acceptance control in the following sequence:

completeness check;

checking the compliance of the material and dimensions with the working drawings;

element integrity check;

checking the quality of welds, ropes, bolted, nailed and riveted joints for compliance with the requirements of technical documentation;

verification of compliance of signal coloring with the requirements of GOST 12.4.026.

3.3. The results of the acceptance are reflected in the quality document.

4. CONTROL METHODS

4.1. The presence of cracks, cuts, kinks, sharp edges, burrs and welds is checked visually before painting.

4.2. The quality of the materials from which the fencing elements are made should be established by certificates or determined by the results of laboratory tests.

4.3. The quality of the coloring of the elements of the fences is determined visually in accordance with GOST 9.032.

4.4. Checking the geometric dimensions of the fences is carried out with measuring tools or templates that provide measurement accuracy up to 1 mm.

5. TRANSPORT AND STORAGE

5.1. Transportation and storage of fences should be carried out in accordance with conditions 5 in accordance with GOST 15150.

5.2. Loading, unloading, transportation and storage of fences should be carried out in conditions that exclude their deformation and damage to the paintwork. It is not allowed to drop fences during unloading, transport them by dragging.

5.3. Synthetic mesh should be stored in places that exclude contamination, high temperatures and direct sunlight.

6. INSTRUCTIONS FOR USE

6.1. Guardrails must be operated in accordance with the requirements of this standard, SNiP III-4 and the instructions for the operation of guardrails.

6.2. Control over the serviceable condition and correct use of fences during operation, installation and dismantling is assigned to engineering and technical workers of construction and installation organizations (foremen, foremen, district mechanics), determined by order of the organization.

6.3. Fencing should be included in the standard set and be assigned to an integrated or specialized team by order of the construction and installation organization, and specially trained persons should be assigned from among the workers of the team, who should be assigned to perform their installation and dismantling.

6.4. Periodic inspection of the fences should be carried out by the foreman (foreman) and consist of a visual inspection (check) of the good condition of the assembly units and elements of the fence.

6.5. Fencing elements with detected faults are subject to replacement or repair.

6.6. The operation of fences with synthetic materials is allowed at an ambient temperature of minus 40 to plus 40 °C.

6.7. Hot work should be carried out at a distance of at least 1.5 m from synthetic meshes to avoid reducing their strength.

6.8. Installation and removal of fences should be carried out in a technological sequence that ensures the safety of construction and installation work. The length of the fenced area is set in technological maps.

6.9. Persons performing the installation and removal of fences must use safety belts for fastening during work to securely installed structures of the building (structure) or to a safety rope.

6.10. The dismantled fences must be placed in containers for their delivery by a crane to the next installation horizon.

7. MANUFACTURER WARRANTY

7.1. The manufacturer guarantees that the fences comply with the requirements of this standard.

7.2. The warranty period for the operation of fences, provided that the consumer complies with the conditions of transportation, storage and operation established by this standard, is 18 months from the date of commissioning.

ATTACHMENT 1

Reference

TERMS AND EXPLANATIONS

CONSTRUCTION.
SAFETY FENCES
INVENTORY

GENERAL SPECIFICATIONS

GOST 12.4.059-89

USSR STATE CONSTRUCTION COMMITTEE
Moscow

STATE STANDARD OF THE UNION OF THE SSR

Non-compliance with the standard is punishable by law

This standard applies to inventory fencing of workplaces at height and passages to them (hereinafter referred to as fencing) used to protect a person from falling in places of height difference during the construction of new and reconstruction of existing buildings and structures.

The standard does not apply to shields and decks designed to cover horizontal openings, protective canopies, horizontal safety devices, as well as fences that are integral structural elements of scaffolding, mounting and other types of technological equipment.

Explanations of the terms used in this standard are given in annex 1.

1. TYPES

1.1. The type of fencing is set according to the totality of the characterized properties indicated in the table.

1.2. The following structure of the designation of fences is established

2.2.1. Protective railings are designed for strength and resistance to the alternate action of both horizontal and vertical uniformly distributed standard loads of 400 N/m (40 kgf/m) applied to the handrail.

In places intended for stay of no more than two people, it is allowed to take as a normative concentrated load equal to 400 N (40 kgf), alternately applied both horizontally and vertically anywhere along the length of the handrail.

2.2.2. The safety fences are calculated for strength and resistance to the action of a horizontal concentrated load of at least 700 N (70 kgf) applied at any point along the height of the fence in the middle of the span, and the outer safety fences, in addition, for strength to the action of a load weighing 100 kg falling from height of 1 m from the level of the workplace in the middle of the span.

2.2.3. The load safety factor for the protective and safety fence should be taken as 1, 2.

2.2.4. The value of the deflection of the handrail of the protective fence under the influence of the calculated load should be no more than 0.1 m.

signal - not less than 2.0 m.

Protective internal fences are installed without limiting the distance from the boundary of the difference in height.

2.2.8. The distance between horizontal elements in the vertical plane of the protective fence should be no more than 0.45 m.

2.2.9. The height of the side element of the protective fence must be at least 0.10 m.

2.2.10. The mesh size of mesh fences should be no more than 0.05 m.

2.2.11. The design of fastening fences to building structures should exclude the possibility of their spontaneous unfastening.

2.2.12. Signal fences must be made in the form of a rope not designed for loads and attached to posts or stable structures of the building (structure), with safety signs hung in the form of regular yellow triangles with a black border with a side of at least 100 mm. Registration of safety signs - in accordance with GOST 12.4.026, the distance between signs should be no more than 6 m.

2.2.13. The breaking load of a mesh of synthetic mesh should be at least 1750 N (175 kgf).

2.2.14. When calculating the strength of mesh fences, it is necessary to take into account the service life of mesh materials and their aging.

2.2.15. Details and assembly units of fences, having a mass of more than 25 kg, must have mounting loops or other devices for slinging.

2.2.16. Elements of fencing structures should not have sharp corners, cutting edges, burrs.

2.2.17. The surface of the filling elements of protective and safety fences must be painted with yellow signal paint in accordance with GOST 12.4.026.

Synthetic mesh before painting with disperse dyes must be impregnated with BT-577 bituminous varnish according to GOST 5631, diluted with white spirit or turpentine.

2.3. Requirements for materials, components and protective coatings

2.3.1. For the manufacture of fences, steel rolled steel grade C235 according to GOST 27772, aluminum alloys grades Amg6 and 1915 according to GOST 4784, softwood sawn timber of at least 2nd grade according to GOST 8486, nets made of synthetic materials, etc.

2.3.2. Synthetic mesh fabrics should be made of nylon or lavsan twisted ropes with a diameter of 3.1 mm, with technological shrinkage during finishing no more than 10%, and standard humidity no more than 1%. The mesh cloths are braided along the contour with a nylon cord with a diameter of 8 mm. The strength characteristics of the mesh materials during testing must correspond to the design ones.

2.3.3. Rolled metal fencing elements must be primed and painted at the manufacturer with paints and varnishes that comply with a slightly aggressive environment according to SNiP 2.03.11-85. Coating class - VII according to GOST 9.032.

Before painting, the surface of the fencing elements must be cleaned to the 4th degree in accordance with GOST 9.402.

2.4. Completeness

2.4.1. The set of fences supplied to the consumer enterprise must include fences of the same type in an amount of up to 20 pieces, an instruction manual, a quality document.

2.5. Labeling and packaging

2.5.1. Fencing elements of the same name (posts, frames, horizontal rod elements, etc.) made of rolled metal must be bundled with wire.

2.5.2. Small parts (clamps, clamps, etc.) must be packed in wooden boxes in accordance with GOST 18617.

2.5.3. Net sheets must be packed in bags.

2.5.4. Each package and box with metal-rolled fencing elements, as well as a bag with mesh sheets, must have a plate containing:

trademark and name of the manufacturer;

conditional designation of the fence;

date of manufacture (month, year);

for mesh sheets, the date of the last test and strength data.

2.5.5. The documentation included in the delivery set must be wrapped in a polyethylene film bag in accordance with GOST 10354 and securely attached to the set with a wire or handed over to the consumer upon direct receipt of the set of fences.

2.6. The service life of fences, provided that the consumer complies with the requirements of operational documentation, is indicated in the technical specifications for fences of a particular type and must be at least:

5 years - metal elements;

2.5 years - wooden elements and synthetic mesh sheets.

3. ACCEPTANCE

3.1. To check the compliance of fences with the requirements of this standard, the manufacturer must carry out an acceptance inspection of fences, as a result of which a decision is made on their suitability for supply and use.

3.2. Each fence must be subjected to acceptance control in the following sequence:

completeness check;

checking the compliance of the material and dimensions with the working drawings;

element integrity check;

checking the quality of welds, ropes, bolted, nailed and riveted joints for compliance with the requirements of technical documentation;

verification of compliance of signal coloring with the requirements of GOST 12.4.026.

3.3. The results of the acceptance are reflected in the quality document.

4. CONTROL METHODS

4.1. The presence of cracks, cuts, kinks, sharp edges, burrs and welds is checked visually before painting.

4.2. The quality of the materials from which the fencing elements are made should be established by certificates or determined by the results of laboratory tests.

4.3. The quality of painting elements of fences is determined visually in accordance with GOST 9.032.

4.4. Checking the geometric dimensions of the fences is carried out with measuring tools or templates that provide measurement accuracy up to 1 mm.

5. TRANSPORT AND STORAGE

5.1. Transportation and storage of fences should be carried out in accordance with conditions 5 in accordance with GOST 15150.

5.2. Loading, unloading, transportation and storage of fences should be carried out in conditions that exclude their deformation and damage to the paintwork. It is not allowed to drop fences during unloading, transport them by dragging.

5.3. Synthetic mesh should be stored in places that exclude contamination, high temperatures and direct sunlight.

6. INSTRUCTIONS FOR USE

6.1. Guardrails must be operated in accordance with the requirements of this standard, SNiP III-4-80 and the instructions for the operation of guardrails.

6.2. Control over the serviceable condition and correct use of fences during operation, installation and dismantling is assigned to engineering and technical workers of construction and installation organizations (foremen, foremen, district mechanics), determined by order of the organization.

6.3. Fencing should be included in the standard set and be assigned to an integrated or specialized team by order of the construction and installation organization, and specially trained persons should be assigned from among the workers of the team, who should be assigned to perform their installation and dismantling.

6.4. Periodic inspection of the fences should be carried out by the foreman (foreman) and consist of a visual inspection (check) of the good condition of the assembly units and elements of the fence.

6.5. Fencing elements with detected faults are subject to replacement or repair.

6.6. The operation of fences with synthetic materials is allowed at an ambient temperature of minus 40 to plus 40 °C.

6.7. Hot work should be carried out at a distance of at least 1.5 m from synthetic meshes to avoid reducing their strength.

6.8. Installation and removal of fences should be carried out in a technological sequence that ensures the safety of construction and installation work. The length of the fenced area is set in technological maps.

6.9. Persons performing the installation and removal of fences must use safety belts for fastening during work to securely installed structures of the building (structure) or to a safety rope.

6.10. The dismantled fences must be placed in containers for their delivery by a crane to the next installation horizon.

7. MANUFACTURER WARRANTY

7.1. The manufacturer guarantees that the fences comply with the requirements of this standard.

7.2. The warranty period for the operation of fences, provided that the consumer complies with the conditions of transportation, storage and operation established by this standard, is 18 months from the date of commissioning.

ATTACHMENT 1

Reference

TERMS AND EXPLANATIONS

APPENDIX 2

Reference

FENCE SCHEMES AND EXAMPLES OF THEIR DESIGNATIONS

Protective inner support railing
(Fencing Zsch Vn Op GOST 12.4.059-89)

1 - filling; 2 - rack; 3 - side board; 4 - floor slab

Protective outer supporting fencing
(Fencing Zshch Nzh Op GOST 12.4.059-89)

a) fastening to a blank wall

b) fastening for a window opening

1 - building column; 2 - h filling; 3 - collar; 4 - floor slab

Safety outer support railing
(Fencing St Nr Op GOST 12.4.059-89)

1 - frame; 2 - filling; 3 - the place of attachment of the fence to the wall of the building (through the embedded part); 4 - building wall

Signal inner support railing
(Fence Sg Vn Op GOST 12.4.059-89)2 - floor slab; 3 - filling; 4 - collar; 5 - safety sign

INFORMATION DATA

1. DEVELOPED by the Central Research and Design and Experimental Institute of Organization, Mechanization and Technical Assistance to the Construction of the Gosstroy of the USSR

INTRODUCED by the State Construction Committee of the USSR

PERFORMERS

V. A. Alekseev, cand. tech. sciences (topic leader); N. D. Levinson; V. I. Brodsky, cand. tech. sciences; V. V. Botygin; V. A. Belyakov; V. V. Bakonin

2. APPROVED AND INTRODUCED BY Decree of the State Construction Committee of the USSR dated April 13, 1989 No. 66

3. REPLACE GOST 12.4.059-78

4. REFERENCE REGULATIONS AND TECHNICAL DOCUMENTS