Scaffolding GOST 27321 87. Rack-mounted attached scaffolding for construction and installation work. Technical conditions. Operating instructions
GOST 27321-87
INTERSTATE STANDARD
ATTACHED RACK SCAFFOLDINGS FOR
CONSTRUCTION AND INSTALLATION WORK
TECHNICAL CONDITIONS
IPC PUBLISHING HOUSE OF STANDARDS
Moscow
INTERSTATE STANDARD
Date of introduction 01.01.89
This standard applies to rack-mounted scaffolding made of steel pipes, used in the construction, reconstruction and repair of buildings and structures to accommodate workers and materials directly in the area of construction and installation work.
1. TECHNICAL REQUIREMENTS
1.2.2. Set up the following structure symbol forest brands.
Table 1
Dimensions in meters
|
Type name |
Maximum height of scaffolding |
Minimum clear width of the tier (aisle) |
Minimum clear height of a tier (passage) |
Tier pitch |
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Rack-mounted, attached clamp scaffolding |
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Rack-mounted attached pin scaffolding |
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Example of a symbolrack-mounted attached clamp scaffolding with normative value surface load 2000 Pa and maximum height 60 m:
LSPH 2000-60 GOST 27321-87
The same, rack-mounted attached pin scaffolding with a standard surface load of 2500 Pa and a maximum height of 40 m:
LSPSH 2500-40 GOST 27321-87
1.3. Characteristics
table 2
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Steel grade |
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Load-bearing elements (posts, tie beams) |
Clamps, pins, fences, etc. |
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2. Steels used for the manufacture of scaffolding must have impact strength at a temperature of minus 40 °C not less than 3 · 10 5 J/m 2. Impact strength tests should be carried out in accordance with GOST 9454. Wooden shields scaffolding must be made of planks coniferous species 2nd grade according to GOST 8486, subjected to antiseptic protection. Wooden deck boards and side fencing of scaffolding must be deeply impregnated with a fire retardant compound. 1.3.6. The service life of forests must be at least five years. 1.3.7. Scaffolding must have fences to prevent people and various objects from falling. 1.3.8. The height of the fence railings must be at least 1.1 m. 1.3.9. The railing of the fence must withstand a concentrated static load of 700 N (70 kgf), applied in the middle of the element in the direction perpendicular to its axis, alternately in the horizontal and vertical planes. 1.3.10. The fence must have at least one intermediate horizontal element or mesh. 1.3.11. The height of the side fencing of the scaffolding must be at least 0.15 m. 1.3.12. All load-bearing horizontal scaffolding elements must withstand a concentrated static load of 1300 N (130 kgf) applied in the middle of the element. 1.3.13. The mass of scaffolding assembly units during manual assembly should not exceed 30 kg. 1.4. Completeness 1.4.1. Scaffolding must be supplied complete. Package Included: A set of scaffolding (racks, crossbars, etc., as well as fastenings to building structures); Passport with operating instructions. 1.4.2. By agreement with the customer, the delivery set includes containers for transportation and storage of scaffolding. 1.4.3. By agreement with the customer, scaffolding can be supplied without flooring panels. 1.4.4. The volume of the scaffolding set for delivery must be: 500, 1000, 1500 and 2000 m (the area of the scaffolding projection on the building wall). 1.5. Marking 1.5.1. Basic load-bearing elements scaffolding must be marked. The marking is applied in a way that preserves it throughout the entire life of the scaffold. 1.5.2. The marking must contain the following information: Trademark (if any) and name of the manufacturer; Product designation (brand); Scaffolding set number; Date of manufacture (month, year). |
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STATE STANDARD OF THE UNION OF THE USSR
Date in charge 0 1.01.89
This standard applies to rack-mounted attached scaffolding made of steel pipes used in the construction, reconstruction and repair of buildings and structures to accommodate workers and materials directly in the area of construction and installation work.
1. TECHNICAL REQUIREMENTS
1.1. Scaffolding must meet all the requirements of GOST 24258-80 and the requirements set out in the relevant sections of this standard. Scaffolding must be manufactured in accordance with the requirements of this standard according to design documentation approved in the prescribed manner. 1.2.Main parameters and dimensions 1.2.1. The types, main parameters and sizes of scaffolds must correspond to those indicated in the table. 1.
Table 1
|
Dimensions, m |
About the type value |
Type name |
Maximum height of scaffolding |
Minimum height of the tier (passage) in the light |
Tier pitch |
|
| Rack-mounted, attached clamp scaffolding | ||||||
| Forest and rack mounted pin |
An example of the designation of rack-mounted clamp scaffolding with a standard value of surface load of 2000 Pa and a maximum height of 60 m:
LSPH 2000-60 GOST 27321-87
The same, rack-mounted attached pin scaffolding with a standard surface load of 2500 Pa and a maximum height of 40 m:
LSPSH 2500-40 GOST 27321-87
1.3. Characteristics 1.3.1. Scaffolding must be manufactured in climatic design U in accordance with GOST 15150-69 and limiting the lower temperature limit to minus 40 ° C. 1.3.2. For the manufacture of scaffolding elements, pipes in accordance with GOST 3262-75 and GOST 10704-76 must be used. 1.3.3. Pipes for the manufacture of forest elements must be without threads, straight and free of dents, cracks and other defects that impair the strength of the elements. 1.3.4. The main elements of scaffolding when exposed to low temperatures down to minus 40 ° C should be made from steel grades indicated in table. 2.
table 2
|
Type of scaffolding |
steel grade |
|
|
Load-bearing elements (posts, tie beams) |
Clamps, pins, fences, etc. |
|
|
Pipes according to GOST 10704-76 |
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| 20 according to GOST 1050-74; St3ps6, St3sp5 according to GOST 380 -71 | St3ps6, St3sp5 according to GOST 380 -7 1 | 20 according to GOST 1050-74; VSt3ps6, VSt3sp5 according to GOST 380 -71 | VSt3ps6, VSt3sp5 according to GOST 380 -71 |
2. ACCEPTANCE
2.1. To verify compliance of scaffolding with the requirements of this standard, the manufacturer must conduct acceptance and periodic tests. 2.2. Each scaffolding element must be subjected to acceptance tests individually. 2.3. Acceptance tests should include: checking the quality of manufactured scaffolding elements and establishing their compliance with the requirements design documentation ; checking the quality of welds; quality check paint coatings; checking scaffold markings. 2.4. One set of scaffolding that has passed acceptance tests out of 100 manufactured is subjected to periodic testing, but at least once every three years. 2. 5. Periodic tests should include: checking the mass of scaffolding; control assembly of scaffolding; and testing timber for strength and stability. 2.6. Tests for strength and stability must be carried out in the working position of the scaffold. It is allowed to carry out control assembly and tests for strength and stability on a fragment consisting of a minimum set of scaffolding (500 m2), with a height of at least 20 m, with loads that fully simulate the loads that arise when installing scaffolding on maximum height.
3. CONTROL METHODS 3.1. The geometric dimensions of scaffolds and their elements are checked with a tape measure in accordance with GOST 7502-80, a metal ruler in accordance with GOST 427-75, a rod compass in accordance with GOST 166-80 or other tools that ensure measurement accuracy of up to 1 mm and verified by metrological and USSR State Standard organizations in accordance with the requirements of GOST 8.002-86. 3.2. Quality weldscheck visually for compliance with GOST 3242-7 9. 3.3. The color quality is determined visually.
4.1. Transportation of scaffolding is carried out by any type of transport, ensuring their safety of scaffolding elements from damage. 4.2. It is not allowed to dump products during unloading, dragging or other actions that could cause damage to structural elements. 4.3. They are transported and stored in bags and boxes and can be stacked on top of each other in no more than three tiers. 4.4. Scaffolding elements must be stored in indoors or under a canopy on pads that prevent contact with the ground. 4.5. Forests are transported and stored in accordance with GOST 15150-69 according to the group of storage conditions OZh4 (in terms of exposure to environmental climatic factors).5. OPERATING INSTRUCTIONS
Scaffolding must be operated in accordance with SNiP III-4-80 and the operating instructions for specific types of scaffolding.6. MANUFACTURER WARRANTY
6.1. The manufacturer guarantees compliance of the scaffolding with the requirements of this standard provided that the consumer complies with the conditions of transportation, storage and operation. Warranty period - 12 months. from the date of commissioning of the scaffolding, but no later than 6 months. from the date of their receipt by the consumer. 6.2. Manufacturer within warranty period repairs or replaces free of charge all scaffold elements that have become unusable due to his fault; replacement must be made within 1 month. from the date of receipt of the notification.INFORMATION DATA
1 . DEVELOPED AND INTRODUCED by the State Construction Committee of the USSR EXECUTORS V. P. Sukhachev (topic leader), A. A. Gershbein, V. V. Bakonin 2. APPROVED AND ENTERED INTO EFFECT by the Resolution of the State Construction Committee of the USSR dated 03.06 .87 No. 107 3. INTRODUCED FOR THE FIRST 4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS (NTD)|
Designation of the technical documentation to which the link is given |
STATE STANDARD OF THE UNION OF THE USSR RACK ATTACHED SCAFFOLDINGS FOR CONSTRUCTION AND INSTALLATION WORKS TECHNICAL CONDITIONS GOST 2732187 STATE CONSTRUCTION COMMITTEE OF THE USSR STATE STANDARD OF THE UNION OF THE SSR RACK ATTACHED SCAFFOLDINGS FOR CONSTRUCTION BUILDING AND INSTALLATION WORK GOST Specifications 2732187 Demountable tubular scaffold for constructional work. Specifications Date of introduction 01.01.89 Failure to comply with the standard is punishable by law. This standard applies to rack-mounted attached scaffolding made of steel pipes used in the construction, reconstruction and repair of buildings and structures to accommodate workers and materials directly in the area of construction and installation work. 1. TECHNICAL REQUIREMENTS 1.1. Scaffolding must meet all the requirements of GOST 24258-80 and the requirements set out in the relevant sections of this standard. Scaffolding must be manufactured in accordance with the requirements of this standard according to design documentation approved in the prescribed manner. 1.2. Main parameters and dimensions 1.2.1. The types, main parameters and sizes of scaffolds must correspond to those indicated in the table. 1. Table 1 Dimensions, m Type designation Type name Standard surface load, Pa (kgf/m2) Maximum scaffolding height Minimum clear tier (passage) width Minimum clear tier (passage) height Tier pitch LSPHL Rack-mounted attached scaffolding 1000 (100), 100 clamp2000 (200), 2500 (250), 0.5; 1.0;LSPSH Rack-mount scaffolding 3000 (300), 1.01,92.0 attached 5000 (500) 80 pin 1.2.2. The following structure is established for the symbolic designation of forest brands. An example of a symbol for the designation of rack-mounted attached clamp scaffolding with a standard value of surface load of 2000 Pa and a maximum height of 60 m: LSPH 2000-60 GOST 27321-87 The same, rack-mounted attached pin scaffolding with a standard surface load of 2500 Pa and a maximum height of 40 m: LSPH 2500- 40 GOST 27321-87 1.3. Characteristics 1.3.1. Scaffolding must be manufactured in climatic modification U in accordance with GOST 15150-69 with a lower temperature limit limited to minus 40 "C. 1.3.2. For the manufacture of scaffolding elements, pipes in accordance with GOST 3262-75 and GOST 10704-76 must be used. 1.3.3. Pipes for the manufacture of scaffolding elements must be without threads, straight, without dents, cracks and other defects that impair the strength of the elements 1.3.4. low temperatures to minus 40°C should be made from steel grades indicated in table. 2. Table 2 Steel grade Load-bearing elements (posts, tie beams) Type of scaffolding Pipes according to GOST 1070476 Clamps, pins, fences, etc. LSPH 20 according to GOST 105074; St3ps6, St3sp5 according to GOST 380-71 St3ps6, St3sp5 according to GOST 380-71LSPSh 20 according to GOST 1050-74; VSt3ps6, VSt3sp5 in accordance with GOST 380-71 VSt3ps6, VSt3sp5 in accordance with GOST 380-71 Notes: 1. By agreement with the developer of technical documentation, the use of steels of other grades, mechanical and Chemical properties which must be no lower than those indicated in the table. 2. 2. Steels used for the manufacture of scaffolding must have an impact strength at a temperature of minus 40°C of at least 3 (105 J/m2). Impact strength tests should be carried out in accordance with GOST 9454-78. 1.3.5. The scaffolding flooring must withstand the load , corresponding to the grade of scaffolding. Wooden boards of the scaffolding must be made of 2nd grade coniferous boards in accordance with GOST 8486-86, subjected to antiseptic protection. Wooden boards of the scaffolding and side fencing of the scaffolding must be deeply impregnated with a fire retardant compound. scaffolding must be in operation for at least 5 years. 1.3.7. Scaffolding must have guards to prevent people and various objects from falling. a concentrated static load of 700 N (70 kgf), applied in the middle of the element in a direction perpendicular to its axis, alternately in the horizontal and vertical planes 1.3.10. 1.3.11. The height of the side fencing of the scaffolding must be at least 0.15 m. 1.3.12. All carriers horizontal elements scaffolding must withstand a concentrated static load of 1300 N (130 kgf) applied in the middle of the element. 1.3.13. The mass of scaffolding assembly units during manual assembly should not exceed 30 kg. 1.3.14. To ascend and descend people, scaffolding must be equipped with stairs in accordance with GOST 26887-86, located at a distance of no more than 40 m from each other. Scaffolding less than 40 m in length must be equipped with at least two ladders. The angle of inclination of stairs to a horizontal surface should be no more than 60°. 1.3.15. Scaffolding must be provided with lightning protection in accordance with SN 305-77. 1.3.16. Signal painting of forests - according to GOST 12.4.026-76. 1.4. Completeness 1.4.1. Scaffolding must be supplied complete. The delivery set includes: a set of scaffolding (racks, crossbars, etc., as well as fastenings to building structures); passport with operating instructions. 1.4.2. By agreement with the customer, the delivery package includes containers for transportation and storage of scaffolding. 1.4.3. By agreement with the customer, scaffolding can be supplied without flooring panels. 1.4.4. The volume of the scaffolding set for delivery must be: 500; 1000; 1500 and 2000 m2 (scaffolding projection area on the wall of the building). 1.5. Marking 1.5.1. The main load-bearing elements of scaffolding must be marked. The marking is applied in a way that preserves it throughout the entire life of the scaffold. 1.5.2. The marking must contain the following data: trademark (if any) and name of the manufacturer; product designation (brand); scaffold set number; date of manufacture (month, year). 1.5.3. Each package and box (returnable packaging) or containers with scaffolding elements must have a labeled tag. The size of the tag, the location of the inscriptions, as well as the method and material for applying the markings must comply with GOST 14192-77. 1:5.4. The label must contain the following information: trademark (if any) and name of the manufacturer; product designation (brand); scaffold set number; date of manufacture (month, year); mass. 1.6. Packaging 1.6.1. Scaffolding elements are tied sorted by type (crossbars, posts, braces, etc.) into packages with wire with a diameter of at least 4 mm in accordance with GOST 3282-74 with twisting (at least two turns). 1.6.2. Small parts (clamps, anchors, etc.) must be packed in wooden boxes in accordance with GOST 18617-83 or returnable containers. 1.6.3. Scaffolding supplied by agreement with the customer in containers for transportation and storage is not additionally packaged. 1.6.4. The documentation included in the delivery must be wrapped and polyethylene film according to GOST 10354-82 and attached to the scaffolding set in a way that ensures its safety, or transferred to the consumer upon direct receipt of the scaffolding set. 2. ACCEPTANCE 2.1. To verify compliance of scaffolding with the requirements of this standard, the manufacturer must conduct acceptance and periodic tests. 2.2. Each scaffolding element must be subjected to acceptance tests individually. 2.3. Acceptance tests should include: checking the quality of manufactured scaffolding elements and establishing their compliance with the requirements of design documentation; checking the quality of welds; checking the quality of paint and varnish coatings; checking scaffold markings. 2.4. One set of scaffolding that has passed acceptance tests out of 100 manufactured is subjected to periodic testing, but at least once every three years. 2.5. Periodic testing should include: checking the mass of the scaffold; control assembly of scaffolding; testing scaffolding for strength and stability. 2.6. Tests for strength and stability must be carried out in the working position of the scaffold. It is allowed to carry out control assembly and testing for strength and stability on a fragment consisting of a minimum set of scaffolding (500 m2), with a height of at least 20 m, with loads that fully simulate the loads that arise when installing scaffolding at the maximum height. 3. CONTROL METHODS 3.1. The geometric dimensions of scaffolds and their elements are checked with a tape measure in accordance with GOST 7502-80, a metal ruler in accordance with GOST 427-75, a caliper in accordance with GOST 166-80 or other tools that ensure measurement accuracy of up to 1 mm and verified by metrological organizations of the USSR State Standard in accordance with the requirements of GOST 8.002 -86. 3.2. The quality of welds is checked visually for compliance with GOST 3242-79. 3.3. The color quality is determined visually. 4. TRANSPORTATION AND STORAGE 4.1. Transportation of scaffolding is carried out using any type of transport that ensures the safety of scaffolding elements from damage. 4.2. It is not allowed to dump products during unloading, dragging or other actions that could cause damage to structural elements. 4.3. During transportation and storage, packages and boxes can be stacked on top of each other in no more than three tiers. 4.4. Scaffolding elements should be stored indoors or under a canopy on pads that prevent contact with the ground. 4.5. Forests are transported and stored in accordance with GOST 15150-69 according to the group of storage conditions OZh4 (in terms of exposure to environmental climatic factors). 5. INSTRUCTIONS FOR OPERATION Scaffolding must be operated in accordance with SNiP II - 4 - 80 and instructions for the operation of specific types of scaffolding. 6. MANUFACTURER WARRANTY 6.1. The manufacturer guarantees that the scaffolding meets the requirements this standard subject to the consumer's compliance with the conditions of transportation, storage and operation. The warranty period is 12 months from the date of commissioning of the scaffolding, but no later than 6 months from the date of its receipt by the consumer. 6.2. During the warranty period, the manufacturer repairs or replaces free of charge all scaffold elements that have become unusable due to his fault; replacement must be made within 1 month from the date of receipt of the notification. INFORMATION DATA 1. DEVELOPED AND INTRODUCED BY the State Construction Committee of the USSR EXECUTORS V. P. Sukhachev (topic leader), A. A. Gershbein, V. V. Bakonin 2. APPROVED AND ENTERED INTO EFFECT by Resolution of the State Construction Committee of the USSR dated 06/03/87 No. 107 3. INTRODUCED FOR THE FIRST 4. REFERENCED REGULATIVE AND TECHNICAL DOCUMENTS (NTD) Designation of the NTD to which the reference is given Number of clause, subclause GOST 8.002-86 3.1 GOST 12.4.026-76 1.3.16 GOST 166-80 3.1 GOST 380 71 1.3.4 GOST 427-75 3.1 GOST 1050-74 1 3.4 GOST 324279 3.2 GOST 3262-75 1.3.2 GOST 3282-74 1.6.1 GOST 7502-80 3.1 GOST 8486-86 1.3.5 GOST 9454-78 1.3.4 GOST 10 354-82 1.6.4 GOST 10704-76 1.3.2, 1.3.4 GOST 14192-77 1.5.3 GOST 15150-69 1.3.1, 4.5 GOST 18617-83 1.6.2 GOST 24258-80 1.1 GOST 26887-86 1.3.14 SNiP III-4-80 5 CH 30577 1.3.15
