JGJ 80-1991 Technical Specification for Safety of Height Operations in Construction
time:
2024-08-07 04:56:07
- JGJ 80-1991
- in force
Standard ID:
JGJ 80-1991
Standard Name:
Technical Specification for Safety of Height Operations in Construction
Chinese Name:
建筑施工高处作业安全技术规范
Standard category:
Construction industry industry standards (JG)
-
Date of Release:
1992-01-08 -
Date of Implementation:
1992-08-01
Standard ICS number:
13.100;91.010.01China Standard Classification Number:
Engineering Construction>>Engineering Construction General>>P09 Health, Safety, Labor Protection
publishing house:
China Planning PressISBN:
1580058.417Publication date:
2004-08-19
Drafter:
Pan Nai, Zhang Xirong, Lin Mufa, Qiu Guangpei, Xia Aiguo, etc.Drafting Organization:
Shanghai Institute of Building Construction TechnologyPublishing Department:
Ministry of Construction of the People's Republic of China
Description (Translated English) / downloadSkip to download
Summary:
This specification is formulated to implement the principle of safe production in high-altitude operations in construction, to ensure clear protection requirements, reasonable technology and economic applicability. This specification applies to high-altitude operations such as edges, openings, climbing, hanging, operating platforms and crossings during industrial and civil housing construction and general structure construction. This specification is also applicable to the construction of various types of holes, pits, trenches, grooves and other projects in other high-altitude operations. JGJ 80-1991 Technical Specification for Safety of High-Altitude Operations in Construction JGJ80-1991 Standard Download Decompression Password: www.bzxz.net
Standard contentSome standard content:
Engineering Construction Standard Full Text Information System
National Standard of the People's Republic of China
Technical Specification for Safety of Height Operations in Construction JGJ80-91
1992 Beijing
Engineering Construction Standard Full Text Information System
. Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
Technical Specification for Safety of Height Operations in Construction JGJ80-91
Editor: Shanghai Institute of Building Construction Technology Approved by: Ministry of Construction of the People's Republic of China Implementation Date: 199 August 1, 2002
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Notice on the Release of the Industry Standard "Technical Specifications for Safety of Height Operations in Construction"
Construction Standard [1992] No. 5
According to the requirements of the former Ministry of Urban and Rural Construction and Environmental Protection (86) Chengkezi No. 263, the "Technical Specifications for Safety of Height Operations in Construction" edited by the Shanghai Institute of Building Construction Technology has been reviewed and approved as an industry standard, numbered JGJ80-91, and will be implemented on August 1, 1992.
This standard is managed by the Institute of Building Science, China Construction First Engineering Bureau, the unit responsible for building safety standards and technology of the Ministry of Construction, interpreted by the Shanghai Institute of Building Construction Technology, and published by the Standard and Quota Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
January 8, 1992
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Section 2
Chapter 5
Chapter 6
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Additional Period
This regulation
Safety protection for working at edges and openings...Working at edges:
Working at openings
Safety protection for climbing and suspended work·
Climbing work·
Suspended work:
Safety protection for operating platforms and crossover work.Operating platform:
Crossover work·
Acceptance of safety protection facilities for working at heights
Explanation of terms in this specification
Guardrails for working at edges Calculation and construction examples of poles…Examples of safety facilities for cave operations
Examples of safety facilities for climbing operations
Examples of calculation and construction examples of operating platforms
Examples of protection of cross-operation channels·
Explanation of terms used in this specification.
Construction Standard Full Text Information System
（35）
（36）
Engineering Construction Standard Full Text Information System
Chapter 1 General
Article 1.0.1 In order to implement the principle of safe production in high-altitude operations in construction, to ensure clear protection requirements, reasonable technology and economic applicability, this specification is formulated. Article 1.0.2 This specification applies to high-altitude operations such as edges, openings, climbing, hanging, operating platforms and crossings during the construction of industrial and civil buildings and general structures.
This specification is also applicable to the construction of various types of holes, pits, trenches, grooves and other projects for other high-altitude operations.
Article 1.0.3 The high-altitude operations referred to in this specification shall comply with the provisions of the national standard "Classification of High-altitude Operations" GB3608-83, which states that "all operations carried out at a height where there is a possibility of falling from a height of more than 2m (including 2 types) from the falling height reference plane." Article 1.0.4 When working at heights, in addition to implementing this specification, the current national standards for working at heights and safety technology shall also be met. Engineering Construction Standards Full-text Information System
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Chapter II Basic Provisions
Article 2.0.1 Safety and technical measures for working at heights and the materials and tools required must be included in the construction organization design of the project
Article 2.0.2 The person in charge of the unit project construction shall be responsible for the safety and technology of the project's high-altitude operations and establish a corresponding responsibility system. Before construction, safety and technical education and disclosure shall be carried out step by step, and all safety and technical measures and personal protective equipment shall be implemented. Construction shall not be carried out without implementation. Article 2.0.3 Safety signs, tools, instruments, electrical facilities and various equipment used in high-altitude operations must be inspected before construction to confirm that they are in good condition before they can be put into use.
Article 2.0.4 Personnel who climb and suspend at heights and personnel who set up safety facilities for high-altitude operations must undergo professional technical training and pass professional examinations, hold certificates to work, and must undergo regular physical examinations. Article 2.0.5 When defects and hidden dangers are found in the safety and technical facilities for high-altitude operations during construction, they must be solved in a timely manner; when personal safety is endangered, the operation must be stopped. Article 2.0.6 All objects that may fall in the construction site should be removed or fixed in advance.
The materials used in high-altitude operations should be stacked stably and should not hinder passage and loading and unloading. Tools should be put into tool bags at hand; walkways, passage boards and climbing tools during operations should be cleaned at any time; disassembled objects and residual materials and waste materials should be cleaned and transported away in a timely manner, and shall not be randomly placed or left unattended. Good objects should not be moved. Article 2.0.7 When performing high-altitude operations on rainy and snowy days, reliable anti-slip, anti-cold and anti-freeze measures must be taken. All water, ice, frost and snow should be cleared in time. Lightning protection facilities should be installed in advance for tall buildings where operations are carried out at height. In case of severe weather such as strong winds of level 6 or above, dense fog, etc., open-air climbing and aerial high-altitude engineering construction standard full text information system
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operations shall not be carried out. After snowstorms and typhoons and heavy rains, safety facilities for high-altitude operations should be checked one by one. If looseness, deformation, damage or falling off is found, they should be repaired and improved immediately. Article 2.0.8 When safety protection facilities are temporarily removed or changed due to work necessity, the consent of the person in charge of construction must be obtained, and corresponding reliable measures must be taken. They should be restored immediately after the operation.
Article 2.0.9 When setting up and dismantling protective sheds, a warning area should be set up and a special person should be assigned to supervise. It is strictly forbidden to dismantle the upper and lower parts at the same time
Article 2.0.10 The main load-bearing rods of the safety facilities for high-altitude operations shall be calculated according to the ten general structural mechanics formulas, and the strength and deflection calculations shall be carried out according to the current relevant specifications, but the strength calculation of steel bending members does not consider the plasticity effect, and the structure shall meet the requirements of the current relevant specifications.
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 3 Safety Protection for Edge and Opening Operations Section 1 Edge Operations
Article 3.1.1 For edge and high-altitude operations, protective measures must be set up and comply with the following provisions:
1. Protective railings must be set up around the foundation pit, around balconies, material tables and cantilevered platforms that have not yet been installed with railings or balustrades, around awnings and cantilevered eaves, around roofs and floors without external scaffolding, and around water tanks and water towers. 2. A safety net must be installed around the second floor where the height of the first floor wall exceeds 3.2m, and around the floor where the height without external scaffolding exceeds 3.2m. Temporary guardrails must be installed at the entrances and sides of the stairs for main and layered construction. Formal protective railings should be installed in the top-level stairs as the progress of the engineering structure progresses. 4. Guardrails must be installed on both sides of the building passages where construction elevators and scaffolding are installed. A safety protection shed should be installed in the ground part of the ground passage. The middle of the double-dragon open-frame passage should be separated and closed.
5. In addition to the guardrails on both sides of various vertical transportation and material receiving platforms, safety doors or movable guardrails should be installed at the platform entrances. Article 3.1.2 The specifications and connection requirements of the edge protection railings shall comply with the following provisions:
1. The effective diameter of the small end of the bamboo crossbar shall not be less than 70mm, and the small end diameter of the railing column shall not be less than 80mm. It shall be tied with galvanized steel wire of not less than No. 16, and shall not be less than 3 turns without slipping.
2. The top diameter of the log crossbar shall not be less than 70mm, the bottom diameter shall not be less than 60mm, and the top diameter of the railing column shall not be less than 75mm. It shall be nailed with round nails of corresponding length or tied with galvanized steel wire of not less than 12 mm, and the surface shall be smooth and stable without shaking.
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bzSosO,co玛Engineering Construction Standard Full Text Information System
bzSosO,co玛Engineering Construction Standard Full Text Information System
3. The diameter of the upper bar of the steel bar should not be less than 16mm, the diameter of the lower bar should not be less than 14mm, and the diameter of the railing column should not be less than 18mm. They should be fixed by electric welding or galvanized steel wire.
4. The steel pipe crossbar and railing column should be Φ48× (2.75~3.5) mm pipes, fixed with fasteners or electric welding.
V. When other steel materials such as angle steel are used as guardrail rods, specifications with equivalent strength should be selected and fixed by electric welding.
Article 3.1.3 When setting up edge guardrails, the following requirements must be met: 1. The guardrail should consist of two upper and lower horizontal bars and railing columns. The height of the upper bar from the ground is 1.0~1.2m, and the height of the lower bar from the ground is 0.5~0.6m. For roofs with a slope greater than 1:22, the guardrail should be 1.5m high and a safety vertical net should be hung. Except for design calculations, when the length of the horizontal bar is greater than 2m, railing columns must be added. , The fixing of the railing columns should meet the following requirements: 1 When fixing around the foundation pit, steel pipes can be used and driven into the ground 50~70cm deep. The distance between the steel pipe and the edge should not be less than 50cm. When sheet piles are used around the foundation pit, steel pipes can be driven outside the sheet piles.
2. When fixing on concrete floors, roofs or walls, pre-embedded parts can be welded with steel pipes or steel bars. When bamboo or wooden railings are used, 30cm long L50×5 angle steel can be welded on the embedded parts, and a hole can be drilled on the upper and lower parts, and then fastened with bamboo or wooden rods with 1mm bolts.
3 When fixing on masonry such as bricks or blocks, 80×6 bent flat steel with appropriate specifications can be pre-embedded as concrete blocks, and then fixed using the above method. The fixing of the main and railing columns and their connection with the crossbar should be such that the overall structure of the guardrail can withstand 1000N external force in any direction at any point on the upper consumption. When the location of the railing is likely to be crowded with people, impacted by vehicles or collisions with objects, the crossbar section should be increased or the column spacing should be increased.
Fourth, the guardrail must be closed from top to bottom with a safety vertical net, or a tightly fixed footboard with a height of not less than 18em or a footboard with a height of 40em should be set under the guardrail. The holes on the footboard and the footboard should not be larger than 25mm. The gap between the board and the bottom should not be larger than 10mm.
The guardrails on both sides of the material receiving platform must be hung with safety vertical nets or fully tied bamboo fences from top to bottom.
Five. When the outer side of the edge faces the street, in addition to the guardrail, the scattered facade must be fully enclosed by hanging safety nets or other reliable measures. Article 3.14 The mechanical calculation and structural type of the edge protection railings are shown in the Appendix Section 2 Opening Operations
Article 3.2.1 When performing opening operations and other openings that are generated due to the needs of the project and process, which may cause people and objects to fall or endanger personal safety, protective facilities must be set up in accordance with the following provisions:
For openings between boards and walls, a solid cover plate, protective railings, safety nets or other anti-falling protective facilities must be set up.
The elevator shaft must be equipped with protective railings or fixed gates; a safety net should be set up every two floors and at most every 10m in the elevator shaft.
For the top of the column holes such as steel pipe piles and cobalt hole piles, the cup-shaped and strip foundation soil openings, the wood and fill pits, as well as manholes, skylights, floor doors, etc., stable covers should be set up according to the opening protection.
Fourth, in addition to the installation of protective facilities and safety signs, red lights should be set up at night for warning at various openings and pits near the construction site passage. Article 3.2.2 When measures such as installing guardrails, adding covers, hanging safety nets and installing gates are taken according to specific circumstances, the following requirements must be met: Holes with a staggered size of 25cm on the floor surface and the platform wall must be covered with solid covers. The covers should be able to prevent movement and displacement.
2. Holes with a side length of 25 to 50cm on the floor surface, holes when installing prefabricated components, and holes temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full Text Information System
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The cover must be able to maintain balanced placement on all sides, and measures must be taken to fix its position. 3. Holes with a side length of 50 to 150cm must be set up with a grid made of steel pipes fastened with fasteners, and covered with bamboo or scaffolding boards. Steel bars running through the concrete slab can also be used to form a protective net, and the spacing between the steel bars should not be greater than 20cm. 4. For openings with a side length of more than 150cm, protective railings are installed around them, and a safety flat net is set under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or the reserved openings should be used for protection. During the construction of pipeline wells, in addition to the above procedures, a clear sign should also be added. If there is temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The covers of openings, deep trenches, and pipeline pits and grooves located next to the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on walls, etc., all openings that land on the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards () underneath. For vertical openings such as windowsills with a side drop of less than 80cm from the lower edge to the floor or bottom surface, if the side drop is greater than 2m, a temporary guardrail of 1.2m high should be added. For other vertical holes and openings with adjacent large objects and the risk of falling, they should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the opening guardrails shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrails is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
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Chapter 4 Safety Protection of Climbing and Suspended Operations Section 1 Climbing Operations
Article 4.1.1 The climbing and hanging facilities used for on-site construction should be determined in the construction organization design. Climbing on site should be done with the aid of climbing facilities on building structures or scaffolds, or manned vertical transportation equipment. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 Straight ladders and other climbing parts required for hoisting components such as columns, beams and crane beams should be specified in the component construction drawings or instructions. Article 4.1.3 Climbing tools must be firm and reliable in structure. The load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be verified according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted in accordance with the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended, there must be reliable connection measures, and the number of joints shall not exceed 1. The strength of the ladder beam after connection shall not be lower than that of the single ladder beam.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°, the hinge must be firm, and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The ladder width should not be greater than 50cm, and the support should be made of angle steel not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and an additional 1~1. 5m high engineering P construction standard full text information system
bzSos.COm5m, and add a safety vertical net. Except for the design calculation, when the length of the crossbar is greater than 2m, a railing column must be added. The fixing of the railing column shall meet the following requirements: 1. When fixing around the foundation pit, steel pipes can be used and driven into the ground 50-70cm deep. The distance between the steel pipe and the edge should not be less than 50cm. When sheet piles are used around the foundation pit, the steel pipe can be driven outside the sheet pile.
2. When fixing on concrete floors, roofs or walls, pre-prepared parts can be welded with steel pipes or steel bars. When bamboo or wooden railings are used, 30cm long L50×5 angle steel can be welded on the embedded parts, and a hole can be drilled on the upper and lower parts, and then fastened with bamboo or wooden rods with 1mm bolts.
3. When fixing on masonry such as bricks or blocks, 80×6 bent flat steel with appropriate specifications can be pre-made as pre-prepared concrete blocks, and then fixed using the above method. The fixing of the main and railing columns and their connection with the crossbars should be such that the guardrails can withstand 1000N force in any direction at any point on the upper railings. When there is a possibility of crowding, vehicle impact or collision, the crossbar section should be increased or the column spacing should be increased.
Fourth, the guardrails must be closed from top to bottom with a safety vertical net, or a tightly fixed footboard with a height of not less than 18em or a footboard with a height of 40em should be set under the railings. The footboard and footboard should not have holes larger than 25mm. The gap between the board and the bottom should not be larger than 10mm.
The railings on both sides of the material receiving platform must be hung with safety vertical nets or fully tied bamboo fences from top to bottom.
5. When the outer side of the edge faces the street, in addition to the guardrail, the scattered facade must be fully enclosed by hanging safety nets or other reliable measures. Article 3.14 The mechanical calculation and structural type of the edge guardrail can be found in the Appendix Section 2. Opening Operations
Article 3.2.1 When performing opening operations and other openings that are generated due to the needs of the project and process and put people and objects in danger of falling or endangering personal safety, protective facilities must be set up in accordance with the following provisions: The openings between the board and the wall must be equipped with a firm cover, guardrail, safety net or other anti-falling protection facilities.
Guardrails or fixed gates must be installed at the elevator shaft; a safety net should be installed every two floors and at most every 10m in the elevator shaft. The upper openings of the column holes such as steel pipe piles and cobalt hole piles, the cup-shaped and strip foundation soil openings, the pits of wood and fill, as well as manholes, skylights, floor doors, etc., should all be equipped with stable covers according to the opening protection.
Fourth, in addition to the installation of protective facilities and safety signs, all kinds of holes and pits near the construction site passages should also be equipped with red lights for warning at night. Article 3.2.2 When taking measures such as installing protective railings, adding covers, hanging safety nets and installing gates according to the specific situation, the following requirements must be met: The holes on the floor surface and the platform wall with a staggered size of 25cm and 2.5cm must be covered with solid covers. The covers should be able to prevent movement and displacement. bzxZ.net
Second, holes with a side length of 25 to 50cm on the floor surface, holes when installing prefabricated components, and holes temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full-text Information System
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The cover must be able to maintain a balanced placement on all sides, and measures must be taken to fix its position. 3. For openings with a side length of 50 to 150 cm, a grid made of steel pipes connected by fasteners must be set up, and bamboo or scaffolding boards must be laid on it. Steel bars running through the concrete slab can also be used to form a protective net, and the spacing between the steel bars should not be greater than 20 cm. 4. For openings with a side length of more than 150 cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or they should be protected by referring to the reserved openings. When constructing pipeline wells, in addition to the above procedures, a clear sign should also be added. If there is any temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The covers of openings, deep trenches, pipeline pits and grooves located next to the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on walls and other places, all openings that reach the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards () at the bottom. For vertical openings such as small windowsills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 2. Other vertical holes and openings that are dangerous for nearby objects to fall should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the opening protective railings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrail is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛 Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection for Climbing and Suspended Work Section 1 Climbing Work
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on building structures or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 The straight ladders and other climbing parts required for the lifting of components such as columns, beams and crane beams should be specified in the component construction drawings or instructions. Article 4.1.3 The climbing tools must be firm and reliable in structure. The use load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be checked according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended for use, there must be reliable connection measures, and there should be no more than 1 joint. The strength of the ladder beam after connection should not be lower than the strength of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°, the hinge must be firm, and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The width of the ladder should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and a 1~1.5m high engineering P construction standard full text information system
bzSos.COm5m, and add a safety vertical net. Except for the design calculation, when the length of the crossbar is greater than 2m, a railing column must be added. The fixing of the railing column shall meet the following requirements: 1. When fixing around the foundation pit, steel pipes can be used and driven into the ground 50-70cm deep. The distance between the steel pipe and the edge should not be less than 50cm. When sheet piles are used around the foundation pit, the steel pipe can be driven outside the sheet pile.
2. When fixing on concrete floors, roofs or walls, pre-prepared parts can be welded with steel pipes or steel bars. When bamboo or wooden railings are used, 30cm long L50×5 angle steel can be welded on the embedded parts, and a hole can be drilled on the upper and lower parts, and then fastened with bamboo or wooden rods with 1mm bolts.
3. When fixing on masonry such as bricks or blocks, 80×6 bent flat steel with appropriate specifications can be pre-made as pre-prepared concrete blocks, and then fixed using the above method. The fixing of the main and railing columns and their connection with the crossbars should be such that the guardrails can withstand 1000N force in any direction at any point on the upper railings. When there is a possibility of crowding, vehicle impact or collision, the crossbar section should be increased or the column spacing should be increased.
Fourth, the guardrails must be closed from top to bottom with a safety vertical net, or a tightly fixed footboard with a height of not less than 18em or a footboard with a height of 40em should be set under the railings. The footboard and footboard should not have holes larger than 25mm. The gap between the board and the bottom should not be larger than 10mm.
The railings on both sides of the material receiving platform must be hung with safety vertical nets or fully tied bamboo fences from top to bottom.
5. When the outer side of the edge faces the street, in addition to the guardrail, the scattered facade must be fully enclosed by hanging safety nets or other reliable measures. Article 3.14 The mechanical calculation and structural type of the edge guardrail can be found in the Appendix Section 2. Opening Operations
Article 3.2.1 When performing opening operations and other openings that are generated due to the needs of the project and process and put people and objects in danger of falling or endangering personal safety, protective facilities must be set up in accordance with the following provisions: The openings between the board and the wall must be equipped with a firm cover, guardrail, safety net or other anti-falling protection facilities.
Guardrails or fixed gates must be installed at the elevator shaft; a safety net should be installed every two floors and at most every 10m in the elevator shaft. The upper openings of the column holes such as steel pipe piles and cobalt hole piles, the cup-shaped and strip foundation soil openings, the pits of wood and fill, as well as manholes, skylights, floor doors, etc., should all be equipped with stable covers according to the opening protection.
Fourth, in addition to the installation of protective facilities and safety signs, all kinds of holes and pits near the construction site passages should also be equipped with red lights for warning at night. Article 3.2.2 When taking measures such as installing protective railings, adding covers, hanging safety nets and installing gates according to the specific situation, the following requirements must be met: The holes on the floor surface and the platform wall with a staggered size of 25cm and 2.5cm must be covered with solid covers. The covers should be able to prevent movement and displacement.
Second, holes with a side length of 25 to 50cm on the floor surface, holes when installing prefabricated components, and holes temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full-text Information System
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The cover must be able to maintain a balanced placement on all sides, and measures must be taken to fix its position. 3. For openings with a side length of 50 to 150 cm, a grid made of steel pipes connected by fasteners must be set up, and bamboo or scaffolding boards must be laid on it. Steel bars running through the concrete slab can also be used to form a protective net, and the spacing between the steel bars should not be greater than 20 cm. 4. For openings with a side length of more than 150 cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or they should be protected by referring to the reserved openings. When constructing pipeline wells, in addition to the above procedures, a clear sign should also be added. If there is any temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The covers of openings, deep trenches, pipeline pits and grooves located next to the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on walls and other places, all openings that reach the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards () at the bottom. For vertical openings such as small windowsills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 2. Other vertical holes and openings that are dangerous for nearby objects to fall should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the opening protective railings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrail is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
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Chapter 4 Safety Protection for Climbing and Suspended Work Section 1 Climbing Work
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on building structures or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 The straight ladders and other climbing parts required for the lifting of components such as columns, beams and crane beams should be specified in the component construction drawings or instructions. Article 4.1.3 The climbing tools must be firm and reliable in structure. The use load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be checked according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended for use, there must be reliable connection measures, and there should be no more than 1 joint. The strength of the ladder beam after connection should not be lower than the strength of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°, the hinge must be firm, and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The width of the ladder should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and a 1~1.5m high engineering P construction standard full text information system
bzSos.COm5cm openings must be covered with solid covers. The covers should be able to prevent movement and displacement.
2. Openings with a side length of 25 to 50cm on the floor surface, openings when installing prefabricated components, and openings temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full Text Information System
bzSosO,co玛Engineering Construction Standard Full Text Information System
The cover must be able to maintain balanced placement around it, and there must be measures to fix its position. 3. Openings with a side length of 50 to 150cm must be set up with a grid made of steel pipes connected by fasteners, and bamboo or scaffolding boards must be laid on it. It is also possible to use steel bars running through the concrete slab to form a protective net, and the spacing between the steel bar grids shall not be greater than 20cm. 4. For openings with a side length of more than 150cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or the reserved openings should be used for protection. When constructing the pipeline well, in addition to the above procedures, a clear sign should be added. If there is temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The cover plates added to the openings, deep trenches, and pipeline pits and grooves located beside the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on the wall, etc., all openings that fall to the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards (). For vertical openings such as window sills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 1. Other vertical holes and openings that may cause falling objects should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the guardrails for the openings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrails is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛 Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection for Climbing and Suspended Operations Section 1 Climbing Operations
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on the building structure or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 Straight ladders and other climbing parts required for hoisting components such as columns, beams and crane beams should be specified in the construction drawings or instructions of the components. Article 4.1.3 Climbing tools must be firm and reliable in structure. The load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be verified according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended, there must be reliable connection measures, and there should be no more than one joint. The strength of the ladder beam after connection should not be lower than that of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°. The hinge must be firm and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The ladder width should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and 1~1. 5m high engineering P construction standard full text information system
bzSos.COm5cm openings must be covered with solid covers. The covers should be able to prevent movement and displacement.
2. Openings with a side length of 25 to 50cm on the floor surface, openings when installing prefabricated components, and openings temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full Text Information System
bzSosO,co玛Engineering Construction Standard Full Text Information System
The cover must be able to maintain balanced placement around it, and there must be measures to fix its position. 3. Openings with a side length of 50 to 150cm must be set up with a grid made of steel pipes connected by fasteners, and bamboo or scaffolding boards must be laid on it. It is also possible to use steel bars running through the concrete slab to form a protective net, and the spacing between the steel bar grids shall not be greater than 20cm. 4. For openings with a side length of more than 150cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or the reserved openings should be used for protection. When constructing the pipeline well, in addition to the above procedures, a clear sign should be added. If there is temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The cover plates added to the openings, deep trenches, and pipeline pits and grooves located beside the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on the wall, etc., all openings that fall to the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards (). For vertical openings such as window sills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 1. Other vertical holes and openings that may cause falling objects should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the guardrails for the openings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrails is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛 Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection for Climbing and Suspended Operations Section 1 Climbing Operations
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on the building structure or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 Straight ladders and other climbing parts required for hoisting components such as columns, beams and crane beams should be specified in the construction drawings or instructions of the components. Article 4.1.3 Climbing tools must be firm and reliable in structure. The load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be verified according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended, there must be reliable connection measures, and there should be no more than one joint. The strength of the ladder beam after connection should not be lower than that of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°. The hinge must be firm and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The ladder width should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and 1~1. 5m high engineering P construction standard full text information system
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National Standard of the People's Republic of China
Technical Specification for Safety of Height Operations in Construction JGJ80-91
1992 Beijing
Engineering Construction Standard Full Text Information System
. Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
Technical Specification for Safety of Height Operations in Construction JGJ80-91
Editor: Shanghai Institute of Building Construction Technology Approved by: Ministry of Construction of the People's Republic of China Implementation Date: 199 August 1, 2002
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Notice on the Release of the Industry Standard "Technical Specifications for Safety of Height Operations in Construction"
Construction Standard [1992] No. 5
According to the requirements of the former Ministry of Urban and Rural Construction and Environmental Protection (86) Chengkezi No. 263, the "Technical Specifications for Safety of Height Operations in Construction" edited by the Shanghai Institute of Building Construction Technology has been reviewed and approved as an industry standard, numbered JGJ80-91, and will be implemented on August 1, 1992.
This standard is managed by the Institute of Building Science, China Construction First Engineering Bureau, the unit responsible for building safety standards and technology of the Ministry of Construction, interpreted by the Shanghai Institute of Building Construction Technology, and published by the Standard and Quota Research Institute of the Ministry of Construction. Ministry of Construction of the People's Republic of China
January 8, 1992
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Section 2
Chapter 5
Chapter 6
Appendix 2
Appendix 3
Appendix 4
Appendix 5
Additional Period
This regulation
Safety protection for working at edges and openings...Working at edges:
Working at openings
Safety protection for climbing and suspended work·
Climbing work·
Suspended work:
Safety protection for operating platforms and crossover work.Operating platform:
Crossover work·
Acceptance of safety protection facilities for working at heights
Explanation of terms in this specification
Guardrails for working at edges Calculation and construction examples of poles…Examples of safety facilities for cave operations
Examples of safety facilities for climbing operations
Examples of calculation and construction examples of operating platforms
Examples of protection of cross-operation channels·
Explanation of terms used in this specification.
Construction Standard Full Text Information System
（35）
（36）
Engineering Construction Standard Full Text Information System
Chapter 1 General
Article 1.0.1 In order to implement the principle of safe production in high-altitude operations in construction, to ensure clear protection requirements, reasonable technology and economic applicability, this specification is formulated. Article 1.0.2 This specification applies to high-altitude operations such as edges, openings, climbing, hanging, operating platforms and crossings during the construction of industrial and civil buildings and general structures.
This specification is also applicable to the construction of various types of holes, pits, trenches, grooves and other projects for other high-altitude operations.
Article 1.0.3 The high-altitude operations referred to in this specification shall comply with the provisions of the national standard "Classification of High-altitude Operations" GB3608-83, which states that "all operations carried out at a height where there is a possibility of falling from a height of more than 2m (including 2 types) from the falling height reference plane." Article 1.0.4 When working at heights, in addition to implementing this specification, the current national standards for working at heights and safety technology shall also be met. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Chapter II Basic Provisions
Article 2.0.1 Safety and technical measures for working at heights and the materials and tools required must be included in the construction organization design of the project
Article 2.0.2 The person in charge of the unit project construction shall be responsible for the safety and technology of the project's high-altitude operations and establish a corresponding responsibility system. Before construction, safety and technical education and disclosure shall be carried out step by step, and all safety and technical measures and personal protective equipment shall be implemented. Construction shall not be carried out without implementation. Article 2.0.3 Safety signs, tools, instruments, electrical facilities and various equipment used in high-altitude operations must be inspected before construction to confirm that they are in good condition before they can be put into use.
Article 2.0.4 Personnel who climb and suspend at heights and personnel who set up safety facilities for high-altitude operations must undergo professional technical training and pass professional examinations, hold certificates to work, and must undergo regular physical examinations. Article 2.0.5 When defects and hidden dangers are found in the safety and technical facilities for high-altitude operations during construction, they must be solved in a timely manner; when personal safety is endangered, the operation must be stopped. Article 2.0.6 All objects that may fall in the construction site should be removed or fixed in advance.
The materials used in high-altitude operations should be stacked stably and should not hinder passage and loading and unloading. Tools should be put into tool bags at hand; walkways, passage boards and climbing tools during operations should be cleaned at any time; disassembled objects and residual materials and waste materials should be cleaned and transported away in a timely manner, and shall not be randomly placed or left unattended. Good objects should not be moved. Article 2.0.7 When performing high-altitude operations on rainy and snowy days, reliable anti-slip, anti-cold and anti-freeze measures must be taken. All water, ice, frost and snow should be cleared in time. Lightning protection facilities should be installed in advance for tall buildings where operations are carried out at height. In case of severe weather such as strong winds of level 6 or above, dense fog, etc., open-air climbing and aerial high-altitude engineering construction standard full text information system
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operations shall not be carried out. After snowstorms and typhoons and heavy rains, safety facilities for high-altitude operations should be checked one by one. If looseness, deformation, damage or falling off is found, they should be repaired and improved immediately. Article 2.0.8 When safety protection facilities are temporarily removed or changed due to work necessity, the consent of the person in charge of construction must be obtained, and corresponding reliable measures must be taken. They should be restored immediately after the operation.
Article 2.0.9 When setting up and dismantling protective sheds, a warning area should be set up and a special person should be assigned to supervise. It is strictly forbidden to dismantle the upper and lower parts at the same time
Article 2.0.10 The main load-bearing rods of the safety facilities for high-altitude operations shall be calculated according to the ten general structural mechanics formulas, and the strength and deflection calculations shall be carried out according to the current relevant specifications, but the strength calculation of steel bending members does not consider the plasticity effect, and the structure shall meet the requirements of the current relevant specifications.
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 3 Safety Protection for Edge and Opening Operations Section 1 Edge Operations
Article 3.1.1 For edge and high-altitude operations, protective measures must be set up and comply with the following provisions:
1. Protective railings must be set up around the foundation pit, around balconies, material tables and cantilevered platforms that have not yet been installed with railings or balustrades, around awnings and cantilevered eaves, around roofs and floors without external scaffolding, and around water tanks and water towers. 2. A safety net must be installed around the second floor where the height of the first floor wall exceeds 3.2m, and around the floor where the height without external scaffolding exceeds 3.2m. Temporary guardrails must be installed at the entrances and sides of the stairs for main and layered construction. Formal protective railings should be installed in the top-level stairs as the progress of the engineering structure progresses. 4. Guardrails must be installed on both sides of the building passages where construction elevators and scaffolding are installed. A safety protection shed should be installed in the ground part of the ground passage. The middle of the double-dragon open-frame passage should be separated and closed.
5. In addition to the guardrails on both sides of various vertical transportation and material receiving platforms, safety doors or movable guardrails should be installed at the platform entrances. Article 3.1.2 The specifications and connection requirements of the edge protection railings shall comply with the following provisions:
1. The effective diameter of the small end of the bamboo crossbar shall not be less than 70mm, and the small end diameter of the railing column shall not be less than 80mm. It shall be tied with galvanized steel wire of not less than No. 16, and shall not be less than 3 turns without slipping.
2. The top diameter of the log crossbar shall not be less than 70mm, the bottom diameter shall not be less than 60mm, and the top diameter of the railing column shall not be less than 75mm. It shall be nailed with round nails of corresponding length or tied with galvanized steel wire of not less than 12 mm, and the surface shall be smooth and stable without shaking.
bzSosO,co玛Engineering Construction Standard Full Text Information System
bzSosO,co玛Engineering Construction Standard Full Text Information System
bzSosO,co玛Engineering Construction Standard Full Text Information System
3. The diameter of the upper bar of the steel bar should not be less than 16mm, the diameter of the lower bar should not be less than 14mm, and the diameter of the railing column should not be less than 18mm. They should be fixed by electric welding or galvanized steel wire.
4. The steel pipe crossbar and railing column should be Φ48× (2.75~3.5) mm pipes, fixed with fasteners or electric welding.
V. When other steel materials such as angle steel are used as guardrail rods, specifications with equivalent strength should be selected and fixed by electric welding.
Article 3.1.3 When setting up edge guardrails, the following requirements must be met: 1. The guardrail should consist of two upper and lower horizontal bars and railing columns. The height of the upper bar from the ground is 1.0~1.2m, and the height of the lower bar from the ground is 0.5~0.6m. For roofs with a slope greater than 1:22, the guardrail should be 1.5m high and a safety vertical net should be hung. Except for design calculations, when the length of the horizontal bar is greater than 2m, railing columns must be added. , The fixing of the railing columns should meet the following requirements: 1 When fixing around the foundation pit, steel pipes can be used and driven into the ground 50~70cm deep. The distance between the steel pipe and the edge should not be less than 50cm. When sheet piles are used around the foundation pit, steel pipes can be driven outside the sheet piles.
2. When fixing on concrete floors, roofs or walls, pre-embedded parts can be welded with steel pipes or steel bars. When bamboo or wooden railings are used, 30cm long L50×5 angle steel can be welded on the embedded parts, and a hole can be drilled on the upper and lower parts, and then fastened with bamboo or wooden rods with 1mm bolts.
3 When fixing on masonry such as bricks or blocks, 80×6 bent flat steel with appropriate specifications can be pre-embedded as concrete blocks, and then fixed using the above method. The fixing of the main and railing columns and their connection with the crossbar should be such that the overall structure of the guardrail can withstand 1000N external force in any direction at any point on the upper consumption. When the location of the railing is likely to be crowded with people, impacted by vehicles or collisions with objects, the crossbar section should be increased or the column spacing should be increased.
Fourth, the guardrail must be closed from top to bottom with a safety vertical net, or a tightly fixed footboard with a height of not less than 18em or a footboard with a height of 40em should be set under the guardrail. The holes on the footboard and the footboard should not be larger than 25mm. The gap between the board and the bottom should not be larger than 10mm.
The guardrails on both sides of the material receiving platform must be hung with safety vertical nets or fully tied bamboo fences from top to bottom.
Five. When the outer side of the edge faces the street, in addition to the guardrail, the scattered facade must be fully enclosed by hanging safety nets or other reliable measures. Article 3.14 The mechanical calculation and structural type of the edge protection railings are shown in the Appendix Section 2 Opening Operations
Article 3.2.1 When performing opening operations and other openings that are generated due to the needs of the project and process, which may cause people and objects to fall or endanger personal safety, protective facilities must be set up in accordance with the following provisions:
For openings between boards and walls, a solid cover plate, protective railings, safety nets or other anti-falling protective facilities must be set up.
The elevator shaft must be equipped with protective railings or fixed gates; a safety net should be set up every two floors and at most every 10m in the elevator shaft.
For the top of the column holes such as steel pipe piles and cobalt hole piles, the cup-shaped and strip foundation soil openings, the wood and fill pits, as well as manholes, skylights, floor doors, etc., stable covers should be set up according to the opening protection.
Fourth, in addition to the installation of protective facilities and safety signs, red lights should be set up at night for warning at various openings and pits near the construction site passage. Article 3.2.2 When measures such as installing guardrails, adding covers, hanging safety nets and installing gates are taken according to specific circumstances, the following requirements must be met: Holes with a staggered size of 25cm on the floor surface and the platform wall must be covered with solid covers. The covers should be able to prevent movement and displacement.
2. Holes with a side length of 25 to 50cm on the floor surface, holes when installing prefabricated components, and holes temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full Text Information System
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The cover must be able to maintain balanced placement on all sides, and measures must be taken to fix its position. 3. Holes with a side length of 50 to 150cm must be set up with a grid made of steel pipes fastened with fasteners, and covered with bamboo or scaffolding boards. Steel bars running through the concrete slab can also be used to form a protective net, and the spacing between the steel bars should not be greater than 20cm. 4. For openings with a side length of more than 150cm, protective railings are installed around them, and a safety flat net is set under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or the reserved openings should be used for protection. During the construction of pipeline wells, in addition to the above procedures, a clear sign should also be added. If there is temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The covers of openings, deep trenches, and pipeline pits and grooves located next to the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on walls, etc., all openings that land on the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards () underneath. For vertical openings such as windowsills with a side drop of less than 80cm from the lower edge to the floor or bottom surface, if the side drop is greater than 2m, a temporary guardrail of 1.2m high should be added. For other vertical holes and openings with adjacent large objects and the risk of falling, they should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the opening guardrails shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrails is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection of Climbing and Suspended Operations Section 1 Climbing Operations
Article 4.1.1 The climbing and hanging facilities used for on-site construction should be determined in the construction organization design. Climbing on site should be done with the aid of climbing facilities on building structures or scaffolds, or manned vertical transportation equipment. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 Straight ladders and other climbing parts required for hoisting components such as columns, beams and crane beams should be specified in the component construction drawings or instructions. Article 4.1.3 Climbing tools must be firm and reliable in structure. The load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be verified according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted in accordance with the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended, there must be reliable connection measures, and the number of joints shall not exceed 1. The strength of the ladder beam after connection shall not be lower than that of the single ladder beam.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°, the hinge must be firm, and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The ladder width should not be greater than 50cm, and the support should be made of angle steel not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and an additional 1~1. 5m high engineering P construction standard full text information system
bzSos.COm5m, and add a safety vertical net. Except for the design calculation, when the length of the crossbar is greater than 2m, a railing column must be added. The fixing of the railing column shall meet the following requirements: 1. When fixing around the foundation pit, steel pipes can be used and driven into the ground 50-70cm deep. The distance between the steel pipe and the edge should not be less than 50cm. When sheet piles are used around the foundation pit, the steel pipe can be driven outside the sheet pile.
2. When fixing on concrete floors, roofs or walls, pre-prepared parts can be welded with steel pipes or steel bars. When bamboo or wooden railings are used, 30cm long L50×5 angle steel can be welded on the embedded parts, and a hole can be drilled on the upper and lower parts, and then fastened with bamboo or wooden rods with 1mm bolts.
3. When fixing on masonry such as bricks or blocks, 80×6 bent flat steel with appropriate specifications can be pre-made as pre-prepared concrete blocks, and then fixed using the above method. The fixing of the main and railing columns and their connection with the crossbars should be such that the guardrails can withstand 1000N force in any direction at any point on the upper railings. When there is a possibility of crowding, vehicle impact or collision, the crossbar section should be increased or the column spacing should be increased.
Fourth, the guardrails must be closed from top to bottom with a safety vertical net, or a tightly fixed footboard with a height of not less than 18em or a footboard with a height of 40em should be set under the railings. The footboard and footboard should not have holes larger than 25mm. The gap between the board and the bottom should not be larger than 10mm.
The railings on both sides of the material receiving platform must be hung with safety vertical nets or fully tied bamboo fences from top to bottom.
5. When the outer side of the edge faces the street, in addition to the guardrail, the scattered facade must be fully enclosed by hanging safety nets or other reliable measures. Article 3.14 The mechanical calculation and structural type of the edge guardrail can be found in the Appendix Section 2. Opening Operations
Article 3.2.1 When performing opening operations and other openings that are generated due to the needs of the project and process and put people and objects in danger of falling or endangering personal safety, protective facilities must be set up in accordance with the following provisions: The openings between the board and the wall must be equipped with a firm cover, guardrail, safety net or other anti-falling protection facilities.
Guardrails or fixed gates must be installed at the elevator shaft; a safety net should be installed every two floors and at most every 10m in the elevator shaft. The upper openings of the column holes such as steel pipe piles and cobalt hole piles, the cup-shaped and strip foundation soil openings, the pits of wood and fill, as well as manholes, skylights, floor doors, etc., should all be equipped with stable covers according to the opening protection.
Fourth, in addition to the installation of protective facilities and safety signs, all kinds of holes and pits near the construction site passages should also be equipped with red lights for warning at night. Article 3.2.2 When taking measures such as installing protective railings, adding covers, hanging safety nets and installing gates according to the specific situation, the following requirements must be met: The holes on the floor surface and the platform wall with a staggered size of 25cm and 2.5cm must be covered with solid covers. The covers should be able to prevent movement and displacement. bzxZ.net
Second, holes with a side length of 25 to 50cm on the floor surface, holes when installing prefabricated components, and holes temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full-text Information System
bzSosO,co玛Engineering Construction Standard Full-text Information System
The cover must be able to maintain a balanced placement on all sides, and measures must be taken to fix its position. 3. For openings with a side length of 50 to 150 cm, a grid made of steel pipes connected by fasteners must be set up, and bamboo or scaffolding boards must be laid on it. Steel bars running through the concrete slab can also be used to form a protective net, and the spacing between the steel bars should not be greater than 20 cm. 4. For openings with a side length of more than 150 cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or they should be protected by referring to the reserved openings. When constructing pipeline wells, in addition to the above procedures, a clear sign should also be added. If there is any temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The covers of openings, deep trenches, pipeline pits and grooves located next to the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on walls and other places, all openings that reach the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards () at the bottom. For vertical openings such as small windowsills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 2. Other vertical holes and openings that are dangerous for nearby objects to fall should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the opening protective railings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrail is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛 Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection for Climbing and Suspended Work Section 1 Climbing Work
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on building structures or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 The straight ladders and other climbing parts required for the lifting of components such as columns, beams and crane beams should be specified in the component construction drawings or instructions. Article 4.1.3 The climbing tools must be firm and reliable in structure. The use load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be checked according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended for use, there must be reliable connection measures, and there should be no more than 1 joint. The strength of the ladder beam after connection should not be lower than the strength of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°, the hinge must be firm, and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The width of the ladder should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and a 1~1.5m high engineering P construction standard full text information system
bzSos.COm5m, and add a safety vertical net. Except for the design calculation, when the length of the crossbar is greater than 2m, a railing column must be added. The fixing of the railing column shall meet the following requirements: 1. When fixing around the foundation pit, steel pipes can be used and driven into the ground 50-70cm deep. The distance between the steel pipe and the edge should not be less than 50cm. When sheet piles are used around the foundation pit, the steel pipe can be driven outside the sheet pile.
2. When fixing on concrete floors, roofs or walls, pre-prepared parts can be welded with steel pipes or steel bars. When bamboo or wooden railings are used, 30cm long L50×5 angle steel can be welded on the embedded parts, and a hole can be drilled on the upper and lower parts, and then fastened with bamboo or wooden rods with 1mm bolts.
3. When fixing on masonry such as bricks or blocks, 80×6 bent flat steel with appropriate specifications can be pre-made as pre-prepared concrete blocks, and then fixed using the above method. The fixing of the main and railing columns and their connection with the crossbars should be such that the guardrails can withstand 1000N force in any direction at any point on the upper railings. When there is a possibility of crowding, vehicle impact or collision, the crossbar section should be increased or the column spacing should be increased.
Fourth, the guardrails must be closed from top to bottom with a safety vertical net, or a tightly fixed footboard with a height of not less than 18em or a footboard with a height of 40em should be set under the railings. The footboard and footboard should not have holes larger than 25mm. The gap between the board and the bottom should not be larger than 10mm.
The railings on both sides of the material receiving platform must be hung with safety vertical nets or fully tied bamboo fences from top to bottom.
5. When the outer side of the edge faces the street, in addition to the guardrail, the scattered facade must be fully enclosed by hanging safety nets or other reliable measures. Article 3.14 The mechanical calculation and structural type of the edge guardrail can be found in the Appendix Section 2. Opening Operations
Article 3.2.1 When performing opening operations and other openings that are generated due to the needs of the project and process and put people and objects in danger of falling or endangering personal safety, protective facilities must be set up in accordance with the following provisions: The openings between the board and the wall must be equipped with a firm cover, guardrail, safety net or other anti-falling protection facilities.
Guardrails or fixed gates must be installed at the elevator shaft; a safety net should be installed every two floors and at most every 10m in the elevator shaft. The upper openings of the column holes such as steel pipe piles and cobalt hole piles, the cup-shaped and strip foundation soil openings, the pits of wood and fill, as well as manholes, skylights, floor doors, etc., should all be equipped with stable covers according to the opening protection.
Fourth, in addition to the installation of protective facilities and safety signs, all kinds of holes and pits near the construction site passages should also be equipped with red lights for warning at night. Article 3.2.2 When taking measures such as installing protective railings, adding covers, hanging safety nets and installing gates according to the specific situation, the following requirements must be met: The holes on the floor surface and the platform wall with a staggered size of 25cm and 2.5cm must be covered with solid covers. The covers should be able to prevent movement and displacement.
Second, holes with a side length of 25 to 50cm on the floor surface, holes when installing prefabricated components, and holes temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full-text Information System
bzSosO,co玛Engineering Construction Standard Full-text Information System
The cover must be able to maintain a balanced placement on all sides, and measures must be taken to fix its position. 3. For openings with a side length of 50 to 150 cm, a grid made of steel pipes connected by fasteners must be set up, and bamboo or scaffolding boards must be laid on it. Steel bars running through the concrete slab can also be used to form a protective net, and the spacing between the steel bars should not be greater than 20 cm. 4. For openings with a side length of more than 150 cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or they should be protected by referring to the reserved openings. When constructing pipeline wells, in addition to the above procedures, a clear sign should also be added. If there is any temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The covers of openings, deep trenches, pipeline pits and grooves located next to the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on walls and other places, all openings that reach the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards () at the bottom. For vertical openings such as small windowsills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 2. Other vertical holes and openings that are dangerous for nearby objects to fall should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the opening protective railings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrail is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛 Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection for Climbing and Suspended Work Section 1 Climbing Work
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on building structures or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 The straight ladders and other climbing parts required for the lifting of components such as columns, beams and crane beams should be specified in the component construction drawings or instructions. Article 4.1.3 The climbing tools must be firm and reliable in structure. The use load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be checked according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended for use, there must be reliable connection measures, and there should be no more than 1 joint. The strength of the ladder beam after connection should not be lower than the strength of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°, the hinge must be firm, and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The width of the ladder should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and a 1~1.5m high engineering P construction standard full text information system
bzSos.COm5cm openings must be covered with solid covers. The covers should be able to prevent movement and displacement.
2. Openings with a side length of 25 to 50cm on the floor surface, openings when installing prefabricated components, and openings temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full Text Information System
bzSosO,co玛Engineering Construction Standard Full Text Information System
The cover must be able to maintain balanced placement around it, and there must be measures to fix its position. 3. Openings with a side length of 50 to 150cm must be set up with a grid made of steel pipes connected by fasteners, and bamboo or scaffolding boards must be laid on it. It is also possible to use steel bars running through the concrete slab to form a protective net, and the spacing between the steel bar grids shall not be greater than 20cm. 4. For openings with a side length of more than 150cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or the reserved openings should be used for protection. When constructing the pipeline well, in addition to the above procedures, a clear sign should be added. If there is temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The cover plates added to the openings, deep trenches, and pipeline pits and grooves located beside the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on the wall, etc., all openings that fall to the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards (). For vertical openings such as window sills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 1. Other vertical holes and openings that may cause falling objects should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the guardrails for the openings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrails is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛 Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection for Climbing and Suspended Operations Section 1 Climbing Operations
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on the building structure or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 Straight ladders and other climbing parts required for hoisting components such as columns, beams and crane beams should be specified in the construction drawings or instructions of the components. Article 4.1.3 Climbing tools must be firm and reliable in structure. The load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be verified according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended, there must be reliable connection measures, and there should be no more than one joint. The strength of the ladder beam after connection should not be lower than that of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°. The hinge must be firm and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The ladder width should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and 1~1. 5m high engineering P construction standard full text information system
bzSos.COm5cm openings must be covered with solid covers. The covers should be able to prevent movement and displacement.
2. Openings with a side length of 25 to 50cm on the floor surface, openings when installing prefabricated components, and openings temporarily formed by missing parts can be covered with bamboo, wood, etc. as covers. Engineering Construction Standard Full Text Information System
bzSosO,co玛Engineering Construction Standard Full Text Information System
The cover must be able to maintain balanced placement around it, and there must be measures to fix its position. 3. Openings with a side length of 50 to 150cm must be set up with a grid made of steel pipes connected by fasteners, and bamboo or scaffolding boards must be laid on it. It is also possible to use steel bars running through the concrete slab to form a protective net, and the spacing between the steel bar grids shall not be greater than 20cm. 4. For openings with a side length of more than 150cm, protective railings are set up around them, and a safety flat net is set up under the opening.
5. The openings of garbage non-channels and flues should be eliminated as the floors are built or installed, or the reserved openings should be used for protection. When constructing the pipeline well, in addition to the above procedures, a clear sign should be added. If there is temporary removal, it must be approved by the person in charge of the construction, and the protective facilities must be restored after the work is completed.
6. The cover plates added to the openings, deep trenches, and pipeline pits and grooves located beside the vehicle driving road should be able to withstand a load of not less than 2 times the local rated effective load-bearing capacity of the rear wheels of trucks. 7. For vertical openings on the wall, etc., all openings that fall to the ground should be equipped with switch-type, tool-type or fixed protective doors. The spacing of the gate grid should not be greater than 15cm. Protective railings can also be used, with footboards (). For vertical openings such as window sills with a lower edge to the floor or bottom surface lower than 80cm, if the side drop is greater than 2m, a 1.2m high temporary guardrail should be added. 1. Other vertical holes and openings that may cause falling objects should be covered or protected, and measures should be taken to fix their positions. Article 3.2.3 The rods and installation of the guardrails for the openings shall comply with the provisions of Articles 3.1.2 and 3.1.3 of this Code. The mechanical calculation of the guardrails is shown in Appendix II (I), and the structural type of the protective facilities is shown in Appendix III Engineering Construction Standard Full Text Information System
bzSoSO,cO玛 Engineering Construction Standard Full Text Information System
Chapter 4 Safety Protection for Climbing and Suspended Operations Section 1 Climbing Operations
Article 4.1.1 The climbing and climbing facilities used for on-site construction should be determined in the construction organization design. On-site climbing should be carried out with the help of climbing facilities on the building structure or scaffolding, and manned vertical transportation equipment can also be used. Ladders or other climbing facilities can be used for climbing operations.
Article 4.1.2 Straight ladders and other climbing parts required for hoisting components such as columns, beams and crane beams should be specified in the construction drawings or instructions of the components. Article 4.1.3 Climbing tools must be firm and reliable in structure. The load of the pedals for people to go up and down should not be greater than 1100N. When there are special operations on the ladder surface and the weight exceeds the above load, it should be verified according to the actual situation. Article 4.1.4 The quality of mobile ladders should be inspected and accepted according to the current national standards.
Article 4.1.5 The bottom of the ladder foot should be solid and should not be raised for use. The upper end of the ladder should be fixed. The working angle of the vertical ladder should be 75°±5°, and the upper and lower spacing of the pedals should be 30cm, and there should be no missing steps.
Article 4.1.6 If the ladder needs to be extended, there must be reliable connection measures, and there should be no more than one joint. The strength of the ladder beam after connection should not be lower than that of the ladder beam of a single ladder.
Article 4.17 When using a folding ladder, the upper angle should be 35~45°. The hinge must be firm and there should be reliable bracing measures. Article 4.1.8 Fixed straight ladders should be made of metal materials. The ladder width should not be greater than 50cm, and the support should be angle steel of not less than L70×6, and the embedding and welding must be firm. The rungs at the top of the ladder should be flush with the top surface of the climb, and 1~1. 5m high engineering P construction standard full text information system
bzSos.COm
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