Pit support works refers to the excavation depth of more than 5m (including 5m) pit (trough) and the use of support structure construction works; or pit is not more than 5m, but the geological conditions and the surrounding environment is complex, the groundwater level in the pit above the bottom of the project.
(B) earth excavation works
Earth excavation works refers to the excavation depth of more than 5m (including 5m) of the pit, slot earth excavation.
(3) formwork works
All kinds of tool-type formwork works, including slip formwork, climbing formwork, large formwork, etc.; horizontal concrete member formwork support system and special structural formwork works.
(D) lifting and hoisting works
(E) scaffolding works
1, floor-standing steel pipe scaffolding with a height of more than 24m;
2, attached lifting and lowering scaffolding, including overall lifting and piecewise lifting;
3, overhanging scaffolding;
4, portal scaffolding;
5, hanging scaffolding;
5, hanging scaffolding. Scaffolding;
6, basket scaffolding;
7, unloading platform.
(F) demolition, demolition works
The use of manual, mechanical demolition or demolition by blasting.
(VII) Other Dangerous Projects
1, installation and construction of architectural curtain wall;
2, tensioning and construction of prestressing structures;
3, construction of tunnels;
4, construction of bridges (including viaducts);
5, construction of special equipments;
6, construction of net frames and cable film structures;
7, the construction of slopes of more than 6m;
8, the diversion and interception of large rivers and streams construction;
9, port works, waterway projects;
10, the use of new technologies, new techniques, new materials, which may affect the quality and safety of construction works, has been administratively licensed, and there is no technical standards for construction.
Each region and the requirements of each company are different. We also require the following: 1, safety construction organization design 2, three treasure four mouth and edge enclosure special program 3, tower crane installation, demolition special program (including foundation calculation) 4, derrick or construction elevator dismantling and installation of the construction program 5, derrick (construction elevator) out of the material platform calculation program 6, various types of emergency plans 7, fall prevention shed erection program 8, cantilevered steel platform design