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Recently, the Ministry of housing and urban rural development issued the catalogue of construction processes, equipment and materials endangering production safety (the first batch) (Draft for comments)
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A total of 22 construction processes, equipment and materials were eliminated, and bamboo (wood) scaffolds and portal steel pipe support frames were prohibited
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The second half of the article is a summary of relevant documents that have been stipulated by provinces and cities across the country
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It is recommended that you read them
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In the catalogue to be eliminated this time, it is forbidden to use construction technology, equipment and materials in housing construction engineering
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1
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The process of simply making reinforcement protective layer cushion block on site 2
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Reinforcement straightening process of winch 3
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Bamboo (wood) scaffold （ 4) it is forbidden to set up support frames for portal steel pipes （ Prohibition) 5
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Construction process and equipment with alkali accelerator restrictions 1
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Flash butt welding process of reinforcement 2
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Manual hole digging process of foundation pile (restrictions) 3
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Cement mortar pasting process of facing brick 4
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Hot melting process of asphalt waterproof coiled material 5
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Iodine tungsten lamp, halogen lamp, fluorescent lamp and incandescent lamp （ 6) gantry, derrick and material hoist （ (restrictions) in the draft for comments, the erection of support frames full of bamboo (wood) scaffolds and portal steel pipes is completely prohibited, and replaced by socket and disc buckle steel pipe scaffolds, fastener type non cantilever steel pipe scaffolds, etc
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Original document: Notice on the public solicitation of opinions on the catalogue of construction processes, equipment and materials endangering production safety in housing construction and municipal infrastructure projects (the first batch) (Draft for comments), in order to prevent and resolve major hidden dangers of accidents in housing construction and municipal infrastructure projects, reduce construction safety risks, and promote the elimination of backward processes in housing and urban and rural construction industry Equipment and materials to improve the safety production level of housing construction and municipal infrastructure projects
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The Ministry has organized and formulated the catalogue of construction processes, equipment and materials that endanger safety production in housing construction and municipal infrastructure projects (the first batch) (Draft for comments), which is now open to the public for comments
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Relevant units and individuals can give feedback in the following ways: 1
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Email: anquanchu@mohurd.gov.cn2
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Mailing address: engineering quality and safety supervision department of the Ministry of housing and urban rural development, No
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9, Sanlihe Road, Haidian District, Beijing 100835
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The deadline for feedback is July 15, 2021
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Annex: Catalogue of construction processes, equipment and materials endangering production safety eliminated by housing construction and municipal infrastructure projects (the first batch) (Exposure Draft) project quality and safety supervision department of the Ministry of housing and urban rural development July 1, 2021 Annex: construction processes endangering production safety eliminated by housing construction and municipal infrastructure projects List of equipment and materials (first batch) (Draft for comments) serial number code name brief description of elimination type restrictions and scope replaceable construction process, equipment and materials (for reference) I
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housing construction engineering 1
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Construction process 11.1.1 simple fabrication of reinforcement protective layer cushion block process on site mixing mortar on the construction site, The cushion block of reinforcement protective layer shall be made by cutting and forming
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It is forbidden to produce cushion block technology with professional pressing equipment and standard molds
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21.1.2 the reinforcement straightening process of the winch uses the winch to straighten the reinforcement
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The steel bar straightening process of ordinary steel bar straightening machine and CNC steel bar straightening cutter is prohibited
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31.1.3 reinforcement flash butt welding process: manually operate flash butt welding machine to weld reinforcement
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It shall not be used when the following conditions are met at the same time: 1
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Reinforcement connection operation in non fixed professional prefabrication plant (yard) or reinforcement processing plant (yard); 2
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Reinforcement connection with diameter greater than or equal to 22mm
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Mechanical connection processes such as sleeve cold extrusion connection, rolling straight thread sleeve connection, etc
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41.1.4 the manual hole digging process of foundation pile adopts the manual excavation method to form the hole of foundation pile
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Restricted areas with one of the following conditions shall not be used: 1
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Areas with abundant groundwater, air pollutants in the hole exceeding the standard, weak soil layer, quicksand and other adverse geological conditions; 2
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The area accessible to the mechanical hole forming equipment
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Mechanical hole forming processes such as percussion drill, rotary drill and rotary drill
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51.1.5 cement mortar pasting process of facing brick there is a potential safety hazard of falling off when pasting exterior wall facing brick with cement mortar
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The restriction shall not be used for works with the sticking height of external wall facing bricks higher than 15m
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Exterior wall coating
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61.1.6 the hot melting process of asphalt waterproof coiled material uses the open fire hot melting method, which is prone to fire accidents
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The restriction shall not be used for waterproof works near underground confined spaces, poorly ventilated spaces and flammable materials
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Polymer reinforced composite waterproof coiled material, self-adhesive modified asphalt waterproof coiled material, high-density polyethylene self-adhesive film waterproof coiled material, etc
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2
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Construction equipment 71.2.1 bamboo (wood) scaffolds are scaffolds made of bamboo (wood) materials
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It is forbidden to use socket and disc type steel pipe scaffold, fastener type non cantilevered steel pipe scaffold, etc
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81.2.2 the full hall load-bearing support frame erected by the portal steel pipe frame shall be used for the full hall erection of the portal steel pipe frame
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It is forbidden to use socket and disc type steel pipe support frame, steel pipe column beam support, mobile formwork, etc
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91.2.3 iodine tungsten lamp, halogen lamp, fluorescent lamp, incandescent lamp and other non energy-saving light sources used for lighting at the construction site
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It shall not be used for lighting in production, office, living and other areas of the construction site
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Energy saving lamp, LED lamp, etc
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101.2.4 gantry and derrick material hoist shall be installed for vertical transportation of materials
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The restriction shall not be used for construction projects of 21 meters and above
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Construction elevator
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3
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Engineering materials 111.3.1 there are alkali accelerator with sodium oxide equivalent content greater than 1.0% and less than the control value of the manufacturer
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It is forbidden to use solution type liquid alkali free accelerator, suspension type liquid alkali free accelerator, etc
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2、 Municipal Infrastructure Engineering 1
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Construction process 122.1.1 hydraulic jack without oil leakage safety device for bent cap (tie beam) unloading formwork process during the construction of bent cap or tie beam, the bottom formwork shall be supported by hydraulic jack without safety device and demoulded by hydraulic jack
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It is forbidden to unload the formwork process such as sand cylinder and self-locking hydraulic jack
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132.1.2 air bag internal formwork process of hollow slab and box girder uses rubber inflatable air bag as the internal formwork of hollow slab or box girder
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Prohibit hollow slab, Box Beam Precast rigid (steel, PVC, high-density foam, etc.) internal mold technology
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142.1.3 the brick (including block) process of inspection well, also known as inspection well, can be divided into brick rectangular inspection well and brick circular inspection well, which is easy to leak and cause water system and soil pollution
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Concrete inspection wells and integrated finished product inspection wells are prohibited
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152.1.4 construction technology of steel wood support for pipe jacking working shaft the support of pipe jacking working shaft adopts the combined support structure of external vertical inserted wooden plate enclosure and internal horizontal circumferential steel support
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It shall not be used under any of the following conditions: 1
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The depth of foundation pit exceeds 3M; 2
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The groundwater level exceeds the height of the foundation pit bottom plate
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Construction technology of bored retaining wall pile, underground diaphragm wall, open caisson, steel grid anchor shotcrete retaining wall, etc.
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