Notice No.
（2） Concrete formwork support works: the erection height is 8m and above, or the erection span is 18m and above, or the total construction load (design value) is 15kn / m2 and above, or the concentrated line load (design value) is 20KN / M and above.
（4） Underwater operation works.
The management personnel at the construction site shall make safety technical disclosure to the operators, and the full-time safety production management personnel shall be responsible for supervising the disclosure activities.
Before the implementation of the special construction scheme for safety technical disclosure, the preparation personnel or the project technical director shall disclose the scheme to the management personnel on the construction site.
（2） Installation and disassembly of hoisting machinery with lifting capacity of 300KN and above, or with total height of 200m and above, or with foundation elevation of 200m and above.
（2） Steel structure, grid and cable membrane structure installation works.
Two.
5、 Demolition works (I) demolition works of wharfs, bridges, viaducts, chimneys, water towers or special buildings and structures that are easy to cause toxic and harmful gas (liquid) or dust diffusion and flammable and explosive accidents.
（4） Underwater operation works.
（3） Cantilever scaffold works.
5、 Demolition works may affect the safety of pedestrians, traffic, power facilities, communication facilities or other buildings and structures.
6、 Underground excavation works are tunnel and cavern works constructed by mining method, shield method and pipe jacking method.
7、 Other (I) curtain wall installation works with construction height of 50m and above.
（6） The adoption of new technologies, new processes, new materials and new equipment may affect the construction safety of the project, and there are no divisional and subdivisional works with national, industrial and local technical standards.
2.
（2） Although the excavation depth does not exceed 3M, the geological conditions, surrounding environment and underground pipelines are complex, or the earthwork excavation, support and dewatering works of foundation pit (groove) affecting the safety of adjacent buildings and structures.
6、 Underground excavation works are tunnel and cavern works constructed by mining method, shield method and pipe jacking method.
4、 Scaffold works (I) floor type steel pipe scaffold works with a height of 50m and above shall be erected.
Template engineering and support system (1) all kinds of tool template engineering: including slipform, climbing formwork, flying mold, tunnel mold and other projects.
Control flow chart control flow chart of dangerous and large projects supervision and control procedure of high-risk divisional and subdivisional works 1.
earthwork excavation, support and dewatering works of deep foundation pit (groove) with an excavation depth of more than 5m (including 5m).
For the management of special construction scheme, the judgment standard of high-risk divisional and subdivisional works of special safety scheme shall be prepared separately.
Template engineering and support system (1) all kinds of tool template engineering: including slipform, climbing formwork, flying mold, tunnel mold and other projects.
I.
（3） Cantilever scaffold works with a height of 20m and above shall be erected on the segmented frame.
（2） Concrete formwork support works: the erection height is 5M and above, or the erection span is 10m and above, or the total construction load (the design value of the basic combination of load effects, hereinafter referred to as the design value) is 10kN / m2 and above, or the concentrated line load (design value) is 15kn / M and above, Or concrete formwork support works with height greater than the horizontal projection width of the support and relatively independent unconnected members.
I.
（6） The adoption of new technologies, new processes, new materials and new equipment may affect the construction safety of the project, and there are no divisional and subdivisional works with national, industrial and local technical standards.
（3） Manual hole digging pile works.
（5） Unloading platform and operation platform works.
（3） Hoisting machinery installation and disassembly works.
1) The safety technical disclosure shall be carried out by levels, and the disclosure shall be carried out by sections and items of Eucalyptus type of work, which shall be handed over to all operators of the construction team level by level, and the safety technical disclosure form shall be filled in..
7、 Other (I) building curtain wall installation works.
Foundation pit works (I) earthwork excavation of foundation pit (groove) with excavation depth of more than 3m (including 3M) Support and dewatering works.
（2） Attached lifting scaffold works or attached lifting operation platform works with lifting height of 150m and above.
（2） Steel structure installation works with a span of 36m and above, or grid and cable membrane structure installation works with a span of 60m and above.
31 (new regulations in 2018) the scope of high-risk divisional and subdivisional works must prepare a special safety scheme separately.
（2） Attached lifting scaffold works.
（2） Installation works with hoisting machinery.
3、 Hoisting and installation and disassembly of hoisting machinery (I) hoisting works with unconventional hoisting equipment and methods and a single lifting weight of 10kN and above.
（3） Manual hole digging pile works with excavation depth of 16m and above.
Solid Lifting Socket Cross Pin
（2） Demolition works within the scope of influence of cultural relics protection buildings, excellent historical buildings or historical and cultural areas.
（4） Hanging basket for work at heights.
（3） Load bearing support system: it is used for full hall support system such as steel structure installation, bearing single point concentrated load of 7kn and above.
（6） Special shaped scaffold works.
3、 Hoisting and installation and disassembly of hoisting machinery (I) hoisting works with unconventional hoisting equipment and methods and a single lifting weight of 100kN and above.
(new regulations in 2018) for the scope of divisional and subdivisional works with greater risk exceeding a certain scale, a special safety scheme shall be prepared separately and verified by experts.
（3） Load bearing support system: it is used for full hall support system such as steel structure installation.
（5） Installation of prefabricated building concrete components.
4、 Scaffold works (I) floor type steel pipe scaffold works with a height of 24m and above (including daylighting shaft and elevator shaft scaffold).
of the general office of the Ministry of housing and urban rural development on issues related to the implementation of the provisions on safety management of high-risk divisional and subdivisional works: jbz (2018) No.
Two.
（5） Construction processes such as overall jacking, translation and rotation of large structures with a weight of 1000KN and above.
