Refers to a construction project that has independent design documents, can independently organize construction, and can independently exert its production capacity or benefit after completion. For example: the school's teaching building, experimental building, library, etc.

2. Unit project?

Refers to the project that can't exert its production capacity or benefit independently after completion, but has independent design and can organize construction independently. For example: civil engineering, electrical lighting, water supply and drainage, etc. ?

3, division of engineering

According to the different division of engineering parts, the types and models of equipment and materials used. Examples: foundation engineering, masonry engineering, concrete and reinforced concrete engineering, decoration engineering, roofing engineering, etc.

4, subdivisional work?

According to different construction methods, different materials and different specifications. For example, masonry can be divided into brick masonry and rubble masonry, in which brick masonry can be divided into inner wall, outer wall and parapet according to different parts. Sub-projects are the most basic structural elements for calculating labor, materials and capital consumption.

Single building is an integral part of building engineering and has independent design documents. After completion, it can exert the production capacity or benefit specified in the design alone.

A unit project refers to a project with independent design and construction conditions, but it cannot independently exert its production capacity or benefit. It is an indispensable part of a single project. The difference between the two is mainly to see whether they can independently play the overall benefit or production capacity after completion.

References:

Baidu encyclopedia-single project

Baidu encyclopedia-unit project

Baidu Encyclopedia-Branch Project

Baidu encyclopedia-subdivisional work