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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Manual hole digging process of foundation pile (restrictions) 3
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Construction equipment 71.2.1 bamboo (wood) scaffolds are scaffolds made of bamboo (wood) materials
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3
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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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Construction elevator
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After being sent to the hospital for rescue, they died
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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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2
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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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162.1.5 the connection process between the upper part of the bridge suspension casting hanging basket and the finish rolled deformed steel suspender of the bottom basket adopts the finish rolled deformed steel as the hanging point suspender to connect the upper part of the hanging basket with the bottom basket.
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Concrete inspection wells and integrated finished product inspection wells are prohibited
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On July 23 and July 18, two scaffold collapse accidents occurred in Guangde, Anhui and Kunming, Yunnan
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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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Chu said that the steel pipe was inserted directly from the roof, but fortunately no one was hurt
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∨ on July 1, 2021, the Ministry of housing and urban rural development issued the catalogue of construction processes, equipment and materials endangering production safety eliminated by housing construction and municipal infrastructure projects (the first batch) (Draft for comments)
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The construction personnel said that they would dismantle and reinforce the scaffold as soon as possible and eliminate the hidden dangers
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Construction process and equipment with alkali accelerator restrictions 1
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The process of simply making reinforcement protective layer cushion block on site 2
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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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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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Catalogue of construction processes, equipment and materials endangering production safety (first batch) (Exposure Draft) s / N code name of housing construction and municipal infrastructure project elimination brief description of elimination type, restrictions and scope replaceable construction processes, equipment and materials (for reference) I Housing construction engineering 1
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Reinforcement straightening process of winch 3
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Ms
The area accessible to the mechanical hole forming equipment
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Construction process 11.1.1 simple process of making reinforcement protective layer cushion block on site
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On the afternoon of July 18, a construction scaffold next to the spring wuheyuan community in Dianchi Lake, Kunming, Yunnan suddenly collapsed, hitting two cars of the resident Ms
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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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Reinforcement connection operation in non fixed professional prefabrication plant (yard) or reinforcement processing plant (yard); 2
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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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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 unload the formwork process such as sand cylinder and self-locking hydraulic jack
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It is forbidden to produce cushion block technology with professional pressing equipment and standard molds
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Chu’s house and blocking the balcony and front door of the house
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The restriction shall not be used for construction projects of 21 meters and above
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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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2、 Municipal Infrastructure Engineering 1
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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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The depth of foundation pit exceeds 3M; 2
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Restricted areas with one of the following conditions shall not be used: 1
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Flash butt welding process of reinforcement 2
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After the Ministry of housing and urban rural development officially issues the document, the reform will be fully implemented throughout the country
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Energy saving lamp, LED lamp, etc
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Mechanical connection processes such as sleeve cold extrusion connection, rolling straight thread sleeve connection, etc
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At about 6:40 on July 23, the scaffold of the plant under construction of Ruixu Mixing Equipment Co., Ltd
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“If you want to continue to receive the official account, please note that the” WeChat “is a public key
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It shall not be used under any of the following conditions: 1
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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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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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Cement mortar pasting process of facing brick 4
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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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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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Star setting: enter the official account homepage, click the “top” corner, click “set star”, and the official account will appear yellow Pentagram (Android and iOS user operation alike)
.
Prohibit hollow slab, Box Beam Precast rigid (steel, PVC, high-density foam, etc.) internal mold technology
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Hot melting process of asphalt waterproof coiled material 5
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It shall not be used when the following conditions are met at the same time: 1
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Because the official account official has adjusted the push rules, if you want to continue to receive the contents of the official account, please set the public building number of the building as the star sign, and more points of the “look at” and “praise” in the end of the article
.
It is forbidden to use solution type liquid alkali free accelerator, suspension type liquid alkali free accelerator, etc
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The groundwater level exceeds the height of the foundation pit bottom plate
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Generally, the main causes of scaffold collapse accidents include three aspects: material quality does not meet the standard, erection does not meet the specification requirements, and construction safety supervision is not in place
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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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The restriction shall not be used for works with the sticking height of external wall facing bricks higher than 15m
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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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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
.
1
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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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In the current construction market, more than 80% of poor quality and overdue scaffold products and more than 90% of unqualified fasteners will bring serious potential safety hazards when these building materials are used in actual construction, resulting in frequent scaffold collapse accidents
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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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in Guangde Development Zone, Anhui Province collapsed, resulting in the burial of three construction workers
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Reinforcement connection with diameter greater than or equal to 22mm
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101.2.4 gantry and derrick material hoist shall be installed for vertical transportation of materials
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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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41.1.4 the manual hole digging process of foundation pile adopts the manual excavation method to form the hole of foundation pile
.
The cause investigation and aftermath disposal of the accident are in progress
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Mechanical hole forming processes such as percussion drill, rotary drill and rotary drill
.
▲ source: 8099999 scaffold collapse accidents occur from time to time during house construction or bridge construction
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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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Guangde scaffold collapse accident caused three deaths
.
The reinforcement protective layer cushion block is made by mixing mortar and cutting and forming on the construction site
.
Exterior wall coating
.
