1. According to the production process
According to the whole production process of building products, it can be divided into survey engineering, design engineering, construction engineering and installation engineering.
2. According to the product object.
According to different product objects, building products can be divided into the following three categories.
(1) civil engineering
Civil engineering includes railway engineering, highway engineering, bridge engineering, water conservancy engineering, port engineering, aviation engineering, communication engineering and underground engineering.
(2) Municipal engineering
Municipal engineering includes gas engineering, water supply engineering, drainage engineering, urban traffic construction, urban central heating engineering, landscaping engineering and road engineering.
(3) Construction and installation works
Construction and installation projects include industrial workshops, agricultural production houses, power sector production houses, transportation and storage houses, residential buildings, public buildings, etc. In addition, it also includes the installation of production and living equipment in the above buildings.
3. According to the composition of building products
According to the different product composition, construction products can be divided into five categories: construction projects, single projects, unit projects, sub-projects and sub-projects
(1) Construction engineering
A specific construction project, usually a construction project, generally refers to the sum of various engineering projects built on one or several sites according to the overall design. In industrial buildings, a factory is generally regarded as a construction project; In civil buildings, a public institution, such as a school and a hospital, is usually regarded as a construction project.
(2) Individual projects
A single project is an integral part of a building project. A construction project can have several single projects or only one single project. A single project refers to a project that has independent design documents in the construction project and can independently exert its production capacity or engineering benefits after completion. Such as workshops, office buildings and houses in factories; The teaching building, library and canteen of a school become a single project.
(3) unit project
Unit project is an integral part of a single project, which can be constructed independently, but it cannot exert its production capacity or use efficiency independently. For example, the workshop, electrical lighting equipment installation, water supply and drainage equipment installation, industrial pipeline installation, mechanical equipment installation and electrical equipment installation of a production workshop are all unit projects with different engineering contents and properties.
(4) Division project
Division project is an integral part of unit project. Generally, it is an engineering project divided according to each part of the unit project or according to the use of different types of work, materials and construction machinery. For example, general civil engineering can be divided into: earthwork, pile foundation engineering, masonry engineering, scaffolding engineering, concrete and reinforced concrete engineering, mechanized hoisting and transportation engineering, technical structure and decoration engineering, floor, roof, decoration engineering, metal structure production and other sub-projects.
(5) subdivisional work
Sub-project is the most basic project further divided according to different construction methods, different materials, different specifications and other factors. For example, the brick right project (sub-project) can be divided into brick masonry, rubble masonry and other sub-projects Each subdivisional work can be divided into several subdivisions (items).
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