Single project unit engineering division engineering subdivisional work.

2. A single project is an integral part of a construction project, and it is an independent project with independent design documents, which can independently exert its benefits or production capacity after completion. Such as warehouses and houses.

3, the unit project has no independent production capacity, but independent construction organization design and drawings of the project. Such as: civil engineering and installation engineering.

4. Sub-project: The unit project is divided into sub-projects according to the type or main part of the project. Such as: foundation engineering, main engineering, electrical engineering, ventilation engineering, etc.

5. Sub-projects: According to different construction methods, structures and specifications, sub-projects are divided into sub-projects. Such as the installation of cast iron pipes, steel pipes and valves in earthwork, reinforcement engineering and water supply engineering.