1
.
In some large or special engineering projects, the state even forced the use of new coiled scaffold
.
Recently, 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)
.
129) issued by Guangzhou Municipal Bureau of housing and urban rural development of Guangzhou City, Guangdong province puts forward that: 1
.
Fastener type steel pipe formwork support
.
The confirmation form and steel pipe specification of the responsible units of the four parties shall be taken as the preconditions for expert demonstration, otherwise it will not be demonstrated
.
This notice shall enter into force as of the date of printing and distributing
.
Among them, the design documents that have passed the construction drawing review are encouraged to change the design
.
From January 1, 2022, all new housing construction projects (including comprehensive pipe gallery) belonging to the scope of dangerous projects shall use socket and turnbuckle steel pipe support
.
Wenzhou City, Zhejiang Province in 2020, Wenzhou Municipal Bureau of housing and urban rural development issued a notice to fully implement the provisions on safety management of dangerous divisional and subdivisional works
.
The competent transportation departments at all levels responsible for the supervision and administration of work safety shall carry out the supervision and inspection of the implementation of this catalogue in accordance with the relevant provisions of the work safety law of the people’s Republic of China
.
For the formwork support works of new housing construction and rail transit projects invested by state-owned funds that belong to ultra dangerous projects, socket and turnbuckle steel pipe supports shall be used
.
Since the second half of 2020, those housing construction and rail transit projects applying for “building construction standardization star site” that use socket and turnbuckle steel pipe supports will be given extra points in the evaluation of “building construction standardization star site”
.
Recommended contents: socket and turnbuckle steel pipe support
.
For projects under construction that fully use socket and turnbuckle steel pipe supports, credit points shall be given
.
1
.
Nantong City, Jiangsu Province on August 4, 2020, Nantong Municipal Bureau of housing and urban rural development issued the notice on promoting the application of socket and disc buckle steel pipe supports at construction sites
.
From January 1, 2021, it will be extended to all formwork support frame projects
. 
From June 1, 2021, socket and disc buckle steel pipe supports shall be used for the formwork support system of new housing construction projects invested by the city government (including comprehensive pipe gallery) belonging to the scope of dangerous projects
.
The letter on soliciting the notice (Trial) opinions on the promotion and use of socket and disc buckle steel pipe supports (SUI Jian Zhi [2021] No
.
Restricted scope of use: restricted to divisional and subdivisional works with high risk; The use will be completely prohibited from January 1, 2022
.
From now on, the formwork support frame works belonging to ultra dangerous large-scale projects and ultra dangerous large-scale projects shall not adopt the fastener steel pipe support system, but must adopt the bowl button type, socket and disc button type and other finalized chemical tool support systems
.
2
.
Since May 1, 2021, the erection height of new projects will be 6m or above, or the erection span will be 18m or above, or the total construction load (design value) will be 15kn / m2 or above, For concrete formwork support works with concentrated line load (design value) of 20KN / m or above, new tool formwork supports such as socket and turnbuckle type shall be selected.
.
Previously, the Ministry of transport and other two departments issued a document recommending the turnbuckle scaffold! It is forbidden to use bamboo (wood) scaffolds and portal steel pipes to erect support frames all over the hall; Restrict the use of fastener type steel pipe full support frame and ordinary bowl button type steel pipe full support frame; In order to prevent and resolve the risk of major accidents in highway and water transportation, promote relevant industries to eliminate backward processes, equipment and materials, and improve the level of intrinsically safe production, according to the work safety law of the people’s Republic of China, the measures for the supervision and administration of work safety in highway and water transportation projects and other laws and regulations, The Ministry of transport and the emergency management department have organized and formulated the catalogue of construction processes, equipment and materials endangering production safety in highway and water transportation projects (hereinafter referred to as the catalogue), which is hereby promulgated
.
2
.
On October 30, 2020, the emergency management department of the Ministry of transport has issued a document to prohibit the fastener type steel pipe cantilever scaffold and require the use of socket and turnbuckle type steel pipe scaffold
.
2
. 
2
.
Dangerous large-scale projects shall comply with the following provisions: 1
.
Restricted scope of use: restricted to divisional and subdivisional works with high risk
22 construction processes, equipment and materials such as the process of simply making the cushion block of the reinforcement protective layer on site, the process of straightening the reinforcement of the winch, the bamboo (wood) scaffold, the full erection of the support frame of the portal steel pipe, the process of flash butt welding of the reinforcement, the cement mortar pasting process of the facing brick, the gantry and the derrick material hoist will be prohibited or restricted in the exposure draft, It is required to replace the simple process of making cushion blocks for reinforcement protective layer on site with the process of producing cushion blocks with professional pressing equipment and standard molds; Bamboo (wood) scaffolds and portal steel pipes shall be erected all over the hall, and the support frame shall be replaced by socket type steel pipe scaffold, fastener type non cantilever steel pipe scaffold, steel pipe column beam support, mobile formwork, etc; The cement mortar pasting process of facing brick shall not be used for projects with the pasting height of facing brick of exterior wall higher than 15m; Gantry and derrick material hoists shall not be used in construction projects of 21 meters and above
.
The construction unit shall include the cost of socket and turnbuckle steel pipe support into the budget estimate and urge the construction enterprise to increase safety investment
.
2
. 
Yichang City, Hubei Province on February 1, 2021, Yichang City issued the first batch of restricted catalogue, which prohibits the use of fastener type, wheel type, bowl type and other shaped steel pipe formwork supports
.
In the catalogue to be eliminated this time, in terms of housing construction engineering: construction technology, equipment and materials are prohibited: ① simple process for making cushion blocks of reinforcement protective layer on site; ② Steel bar straightening process of winch; ③ Bamboo (wood) scaffold (prohibited); ④ Erection of support frame for portal steel pipe (prohibited); ⑤ Alkali accelerator; Restricted construction process and equipment: ① flash butt welding process of reinforcement; ② Manual hole digging technology of foundation pile (limited); ③ Pasting process of facing brick cement mortar; ④ Hot melt process of asphalt waterproof coiled material; ⑤ Iodine tungsten lamp, halogen lamp, fluorescent lamp, incandescent lamp (limited); ⑥ Gantry, derrick and material hoist (limited); Original document: Annex: with the emergence of new scaffolds, the state began to strongly require the prohibition of traditional scaffolds and vigorously promote new scaffolds
.
Items in the restricted and prohibited directory shall be strictly implemented
.
Wheel buckle type, bowl buckle type and other shaped steel pipe formwork supports
. 
From January 1, 2021, all newly started housing construction and municipal infrastructure projects shall use socket and turnbuckle steel pipe supports
.
Since June 1, 2021, the turnbuckle frame has been included in the preconditions for the demonstration of the special construction scheme of ultra dangerous formwork support project, otherwise it will not be demonstrated
.
In 2020, Suzhou Municipal Bureau of housing and urban rural development issued the notice on strengthening the safety management of formwork support and scaffold engineering at the construction site
.
2
.
All units engaged in highway and water transport projects shall take effective measures to completely stop using the “prohibited” construction processes, equipment and materials listed in the catalogue after the specified implementation period, and shall not use the “restricted” construction processes and equipment listed in the catalogue within the limited conditions and scope
.
From September 1, 2020, the new housing construction and municipal infrastructure projects invested by the government must use socket and turnbuckle steel pipe supports
.
1
.
The quality of all types of support materials must meet the requirements of corresponding specifications and standards, otherwise, once found, the qualification for applying for various excellence and priority evaluation of the project will be cancelled, and the work will be stopped for rectification
.
Xuzhou City, Jiangsu Province 1
.
It is hereby announced
.
If steel pipes and fasteners must be used for ultra dangerous formwork support works due to special structure or height and site constraints, they shall be signed and confirmed by the four responsible units of project design, construction, construction and supervision, and can be erected with steel pipe fasteners, which must comply with relevant specifications
.
