What is the understanding of sub projects?

One minute to understand the division standards of rail transit unit engineering, sub-engineering and sub-engineering.

Divisional engineering: Divisional engineering is the various components of construction engineering and installation engineering, which are divided according to the main parts of construction projects or types of work projects and installation works. Such as earthwork, foundation and foundation engineering, masonry engineering, ground engineering, decoration engineering, pipeline engineering, ventilation engineering, general equipment installation engineering, container engineering, automation instrument installation engineering, industrial furnace masonry engineering, etc.

Sub-project: Sub-project refers to the component of the sub-project, which is the most basic unit of calculation in the construction drawing budget. It is further divided into sub-projects according to different construction methods, different specifications of different materials, etc.

For example, the reinforced concrete sub-project can be divided into two sub-projects: pounding and prefabrication; Prefabricated floor slab works can be divided into sub-projects such as slabs, hollow slabs, and grooved slabs; The brick wall division project can be divided into sleeping wall (solid wall), hollow wall, interior wall, exterior wall, one brick thick wall, one and a half thick brick wall and other sub-projects.

The sub-project is an integral part of the unit project, which should be determined according to the professional nature and building part. The subdivision projects of general industrial and civil construction projects include: foundation and foundation engineering, main structure engineering, decoration engineering, roofing engineering, water supply, drainage and heating engineering, electrical engineering, intelligent building engineering, ventilation and air conditioning engineering, and elevator engineering.

When the sub-project is larger or more complex, it can be divided into several sub-sub-projects according to the type of material, construction characteristics, construction procedures, professional systems and categories. For example, the foundation and foundation division project can be subdivided into unsupported earthwork, supported earthwork, foundation and foundation treatment, pile foundation, underground waterproofing, concrete foundation, masonry foundation, steel (pipe) concrete, steel structure and other sub-division projects; The main structure subdivision project can be subdivided into concrete structure, Jingang (tube) concrete structure, masonry structure, steel structure, wood structure, grid and cable membrane structure and other sub-division projects; The building decoration sub-project can be subdivided into ground, plastering, doors and windows, ceilings, lightweight partition walls, decorative panels (bricks), curtain walls, painting, pasting and soft packaging, details and other sub-projects; The intelligent building division project can be subdivided into communication network system, office automation system, building equipment monitoring system, fire alarm and fire linkage system, security prevention system, integrated wiring system, intelligent integrated system, power supply and grounding, environment, residential (community) intelligent system and other sub-division projects.

Divisional EngineeringThe differences between sub-projects and sub-projects are as follows

1. The branch project is a unit project.

The components are the various components of the construction project and the installation project, which are divided according to the main parts of the construction project or the type of work and the type of installation project.

2. The sub-project is an integral part of the unit project, and the division of the sub-project is determined according to the professional nature and the building part. The professional nature refers to the installation of the equipment.

3. If the house divides the construction project, it should be divided according to the different parts of the building, such as the foundation should be the main structure at the bottom of the building, the vertical main pillar and floor, these are the main structure, for the part of any house with a roof above, according to the different parts of the whole house to divide, and then divide it into part projects.

4. The sub-project refers to the component of the sub-project and is the construction drawing budget.

It is the most basic unit of calculation, which is further divided into sub-projects according to different construction methods, different specifications of different materials, etc., such as reinforced concrete.

The sub-project can be divided into two sub-projects: pounding and prefabrication.

5. For the division should be a part of the building, it should be a certain professional equipment, for the sub-project is the smallest, and can no longer be divided, for example, the concrete process is the smallest, it is a sub-project, then a number of sub-projects are combined to form a sub-project, and the sub-project is combined to form a unit project, and the unit project is combined to form a single project.

A single project or several individual projects together form a construction project.

Partial projects refer to projects that cannot independently exert their capabilities or benefits, and do not have independent construction conditions, but have the conditions for settling the project price.

Sub-project refers to the subdivision of sub-project, which is the basic item that constitutes sub-project, and is a construction project or installation project that can be produced through a relatively simple construction process and can be calculated with an appropriate unit of measurement.

1. Branch engineering.

Partial engineering is a component of the unit project, usually a unit project, according to the various parts of the engineering entity can be divided into a number of sub-projects, such as housing construction unit engineering, can be divided into earthwork engineering, masonry engineering, concrete and reinforced concrete engineering, roofing engineering, decoration engineering, etc.

2. Sub-projects.

Sub-projects, also known as project sub-items or sub-items, are generally divided into construction sub-items according to different factors such as the selected construction method, the materials used, and the specifications of structural components. For example, in masonry engineering, it can be divided into brick foundation, brick wall, brick column, block wall, reinforced brick lintel, etc., and in earthwork engineering, it can be divided into excavation, backfill, surplus soil transportation and other sub-projects. The quantity of the engineering entity measured in the appropriate unit of measurement is the engineering quantity, and the unit price of the sub-project with unsynchronized distance is the most basic unit of valuation of the project cost (i.e., the unit price).

The cost of each sub-project is the product of the quantity and unit price of the sub-project.

The sub-project cost is difficult to forget after seeing it.

The division is a subset of the division, and the division is a subset of the monomer. A monomer includes several divisions, such as the foundation division, the main body division, the decoration division, and the installation division. A division includes several sub-items, such as the foundation sub-section includes earthwork sub-item, steel bar sub-item, formwork sub-item, waterproof sub-item, etc.

Unit project: a project with an independent system, such as a building division project: the components of the unit project, such as the foundation and foundation division, the main division, the roof division, the decoration division, and the general house has 10 divisions.

Sub-project: the component of the sub-project, such as the steel bar sub-project, the template sub-project, and the concrete sub-project in the main sub-division.

Units = n divisions.

Divisions = n subdivisions.

Intuitive example: One yuan = 10 jiao One corner = 10 points.

Divisional EngineeringYesSingleorUnit engineeringThe component is a project that divides a single or unit project into several divisions according to the structural part, the length of the road section and the construction characteristics or construction tasks;

Sub-projectsIt is a component of the sub-project, which is a project that divides the sub-project into a number of sub-projects or projects according to different construction methods, materials, processes and road lengths.

A sub-project is a component ...... in a unit projectA sub-project is a sub-project that is a sub-project.

Divisional project: Segmented project refers to a project that cannot independently exert its ability or benefit and does not have independent construction conditions, but has the conditions for settling the project price. A sub-project is a component of a unit project, usually a unit project, which can be divided into several sub-projects according to the various parts of its engineering entity.

For example, the construction of housing units can be divided into earthwork, masonry, concrete and reinforced concrete works, roofing works, decoration works, etc. Sub-projects

Sub-project refers to the subdivision of sub-project, is the basic project that constitutes sub-project, also known as project sub-item or sub-head, it is a construction project or installation project that can be produced through a relatively simple construction process and can be calculated in an appropriate unit of measurement. Generally, the construction sub-items are divided according to different factors such as the selected construction method, the materials used, and the specifications of structural components. For example:

In the masonry project, it can be divided into brick foundation, brick wall, brick column, block wall, reinforced brick lintel, etc., and can be divided into excavation, backfill, residual soil transportation and other sub-projects in the earthwork project. Additional Information:

Signing of sub-project contract: The employer divides the overall project into several parts, and the employer signs contracts with several contractors respectively, and they contract a part of the project respectively, each contractor is only responsible for the project contracted by itself, and the employer is responsible for the coordination of the entire project. Itemized project contracting refers to a form of project contracting in which the employer divides a project into several parts and is undertaken by some contractors separately.

Encyclopedia - Itemized Works.

1. Whether it has independent construction conditions and whether it can produce benefits.

The sub-project does not have the conditions for independent construction, and the sub-project cannot exert its ability or benefit independently. The unit project has independent construction conditions, but the unit project cannot independently exert its ability or benefits. Sub-projects can be completed independently, and sub-projects can exert their capabilities or benefits independently.

2. Differences in composition.

A sub-project is an integral part of a sub-project, and a sub-project consists of multiple sub-projects. A sub-project is a component of a unit project, and a unit project can be divided into several sub-projects. A unit project is an integral part of a single project, and a single project is generally composed of several unit projects.

Hello, the main differences between sub-projects and sub-projects are:1Range size:

The sub-project is usually a division of a larger scope of the project, with a higher level of division, and the sub-project is a more detailed layer-by-layer division with a more specific scope of commitment. The scope of the sub-project is relatively large, and the scope of the sub-project is relatively small. 2.

Responsible subject: The sub-project is responsible for the higher-level department, and the sub-project is usually responsible for the middle and low-level organizational units or individuals. The responsibility of the sub-project mainly falls at the department level, and the responsibility of the sub-project mainly falls at the team level.

3.Management mode: The sub-project adopts a broader management method at a higher level, and the sub-project adopts a more detailed management and control mode, which requires more accurate calculation and control of the construction period, cost, quality, etc.

4.Synthesis method: The results of the sub-project are synthesized through the division of labor of various departments, and the results of the sub-project are summarized and integrated through the division of responsibilities.

Therefore, the sub-project is more dependent on the cooperation of various departments, and the sub-project is more dependent on the connection between the various responsibility systems. In general, the sub-project has a wider scope, a higher level, and requires a wider range of management, while the sub-project has a more specific scope, a lower level, and requires more detailed management and control. The two are different stages of the layer-by-layer division project, and corresponding management methods need to be adopted.

Hope it helps.