What Is an Engineering Cost Estimate?

Engineering Cost Estimate, also known as engineering estimate, is to estimate the total cost of a specific project to meet the needs of project proposals, feasibility studies and scheme design.

Engineering estimate

1) Design scheme.

2) Investment estimation indicators, budget estimates indicators, technical and economic indicators.

3) Cost indicators (including single project and unit project).

4) Similar project estimates.

5) Design parameters (or design quota indicators), including various building area indicators, energy consumption indicators, etc.

6) Estimated quota.

7) Local materials and equipment budget prices and market prices (including materials, equipment prices and professional subcontracting quotations, etc.).

8) Fee collection standards stipulated by relevant departments.

9) Price adjustment coefficient and material difference calculation method.

10) Site conditions, such as geographical location, geological conditions, transportation, water supply, and power supply conditions.

11) Other empirical reference data, such as materials, equipment transportation and miscellaneous rates, equipment installation rates, sporadic engineering and auxiliary materials ratios (%), etc.

The more specific and complete the above data, the higher the accuracy of the investment estimates.

Investment estimates are prepared in the early stages of construction, and the main basis for their preparation is not yet very specific. Therefore, it is necessary to look at the big points when compiling, according to the conditions of different stages, be rough and meticulous, and achieve the due accuracy .

The common methods of investment estimation are as follows:

1) Prepared using investment estimation indicators, budget indicators, and technical and economic indicators.

In the main production projects of industrial construction, various professional departments, such as steel, textile, light industry, etc., have prepared investment estimates, including process equipment, with different annual production capacities (such as several tons of steel, several spindles, and several tons of beer) , Construction and installation projects, other expenses, such as physical consumption indicators, cost indicators, fee collection standards, price levels, etc. When compiling investment estimates, apply the corresponding indicators according to the annual production capacity, and adjust some of the content that should be adjusted and converted to the required investment estimates.

Ancillary projects and structures are generally based on 100 square meters of building area or "seat", "m³", etc., including the same content, and the application and adjustment methods are the same as above.

Civil buildings: Most of the indicators compiled are based on 100 square meters of construction area. The indicators include engineering characteristics, major engineering quantities, major materials and artificial physical consumption indicators, and cost indicators (including direct, indirect, and unilateral). Cost, etc.), the method of use is basically the same as that of industrial buildings. Various indicators are prepared in a single project, including the content of supporting civil engineering, water, heating, air conditioning, electrical and other unit projects.

2) Prepared by using individual project cost indicators.

It is mainly applicable to project proposals or rough investment estimates in the planning stage or ancillary supporting projects used in construction projects. There is a certain range of individual project cost indicators (including civil engineering, Water, heating, electrical, etc.), such as Beijing's 1995 multi-storey brick-concrete general standard housing is about 750 ~ 850 yuan / m. It only needs to be applied according to the type of structure when it is adopted. If adjustment and conversion is required, it can only be adjusted according to the local and regional differences and according to local regulations.

3) Adopt similar project outline and budget preparation.

The premise is that there must be an outline and budget (or a bid base) of a construction project with a construction scale similar to the standard, especially the latter is more reliable. When applying, it is necessary to convert the different standards or practices for different materials and to convert between different years Adjust the differences in cost levels.

4) Prepared by approximate (calculus) engineering quantity estimation method.

This method is basically the same as the compilation and budgeting methods, that is, after using the calculation of the main subheading quantities (not necessarily too accurate), set the unitary and budget fixed unit prices and fee collection standards, plus a certain supporting subheading coefficient, that Invest for what you need. This method is suitable for unit projects without indicators that can be set, such as structures, outdoor projects, etc., and can also be used to convert or adjust sub-items of different parts and components, as well as water, heating, and electrical projects.

5) Prepared by market inquiry plus coefficient method.

This method is mainly applicable to construction equipment installation projects and professional subcontracting projects, such as elevators and telephone exchanges, whether imported or domestically made, after consulting the manufacturer, adding transportation and installation costs to the required estimated investment. . Another example is bowling, sauna and other equipment, which are generally subcontracted by professional manufacturers, and then add the overall contract management fee (or construction cross-operation fee, generally calculated as 2% ~ 5%).

6) Prepared by the rapid investment estimation method for civil buildings.

This method solves the unit engineering investment estimates of various types of civil buildings with large current volumes, widely differing standards, and complete building functions. The method is to accumulate and grasp a wide range of unit construction cost indicators, to quickly estimate project volume indicators and design parameters (such as unit heat, cold, and power consumption indicators (W / M) for various types of civil buildings, and boiler evaporation (T / H), etc.), according to the characteristics of each unit of the project, use different reasonable units of measurement (change the irrationality of using a single building area as a unit of measurement), combined with the actual situation of the project to estimate the flexibility and fast Required investment. ^[1]