Existing defects and suggestions for improvement
Labor cost and labor budget unit price
Labor cost refers to the cost to construction workers, and its calculation method is based on the number of workers multiplied by the time. The data report shows that in the construction of water conservancy and hydropower projects, labor costs account for 35% of the total expenditure, and in dams, channel projects and other buildings dominated by earth and stone, labor costs account for about 45%. Therefore, to a great extent, the accuracy and rationality of labor cost calculation will directly affect the accuracy of fraud in water conservancy and hydropower projects. In the labor cost, the total number of workers is derived from the total number of workers, and the unit price of labor budget refers to the value created in a certain period of time. The unit price of labor budget consists of basic salary, auxiliary salary and salary surcharge respectively; The basic salary consists of post salary and annual salary. Auxiliary wages refer to construction allowance, holiday overtime allowance, regional allowance, dinner allowance, etc. Wage surcharge includes employee welfare fund, trade union funds, medical insurance, industrial injury insurance, endowment insurance, employee unemployment insurance and housing accumulation fund. The unit price of labor budget is set for construction workers. At present, there are a large number of construction workers in enterprises, and many temporary workers and migrant workers have replaced construction workers on many occasions, which can greatly reduce the financial burden of enterprises.
According to the above data, I think we can adjust the existing labor cost calculation method of construction cost of water conservancy and hydropower projects in China, which is divided into two parts: construction workers and migrant workers. Construction workers can play the role of technical consultants, not only as senior consultants, but also as important positions in metal material equipment installation and electromechanical equipment debugging of water conservancy and hydropower projects. The calculation method of labor cost and labor cost budget unit price is changed to the current standard calculation. [1] Migrant workers undertake low-skilled jobs, so they can serve as primary workers in water conservancy and hydropower projects such as metal material equipment installation and electromechanical equipment debugging. The total amount of labor will not change according to the current quota, but the composition of labor budget unit price will be adjusted as follows: 1. The basic salary includes many factors such as liquidity and part-time job, and the salary amount is calculated by time. At the same time, the billing per unit time can be appropriately lowered, except for last year's salary; 2. The extra salary remains unchanged; 3. Wage surcharge. Because farmers enjoy land, China has a series of laws to protect migrant workers, and it is necessary to set up trade union funds and work-related injury insurance premiums for migrant workers, and the fees are charged according to the standard charging method.
Other direct costs
Other expenses refer to other expenses directly used in the construction site besides direct expenses, such as night construction subsidies, rainy day construction subsidies, special area construction subsidies, etc. Other direct costs are calculated by multiplying the direct costs by the relevant rates. The calculation formula is simple, but the accuracy is poor, so it must be adjusted accordingly.
Construction costs increase in winter and rainy season.
Construction subsidy in rainy days in winter refers to the increased subsidy cost under the condition of ensuring the quality and safety of construction in rainy days in winter, including the power and fuel loss consumed by adding construction procedures, extra rain protection, heat preservation and drainage. The increased cost of construction in winter and rainy season is different in each region, because the winter duration, rainfall and weather in each region are different, and each type of project is also different. For example, the extra cost of soil and concrete pouring in water conservancy and hydropower projects is different. However, at present, in the unit cost of water conservancy and hydropower projects, the calculation rate only considers the regional differences and does not consider the differences of different types of engineering buildings, so the calculation results are not accurate. Therefore, considering this factor, we should take into account the differences of engineering buildings and make comprehensive adjustments.
Night construction fare increase fee
The increase fee for night construction refers to the lighting fee for the construction site and public construction roads. At present, the night construction cost in the cost compilation of water conservancy and hydropower projects is calculated according to the percentage of direct costs, of which the category of construction projects is 0.5% and the category of secondary installation projects is 0.7%. This percentage shows that only the differences between construction projects and installation projects are considered in the calculation of night construction cost increase, but in practice, there are significant differences between different types of construction projects. For example, in earthwork and concrete pouring engineering, the requirements for construction quality and construction procedures are very different, so the degree of lighting at night is also different. Therefore, in view of this, it is necessary to increase the cost of night construction according to different types of engineering buildings.
other
Other increased costs include construction equipment use fees, inspection fees, repair fees, project positioning review fees, completion site cleaning fees, project handover fees, etc. In the existing cost compilation system of water conservancy and hydropower projects, other expenses are calculated by percentage, with construction projects accounting for 1.2% and installation projects accounting for 1.6%. In this cost, the cumulative difference of different types of engineering costs will be great, because this cost is composed of many different costs. [2] For earthwork and borehole grouting projects in the construction of water conservancy and hydropower projects, the equipment usage fee, inspection fee, repair fee, project positioning recheck fee, completion site cleaning fee and project handover fee are all lower than those of drilling and grouting projects, so the cumulative difference will become larger. Therefore, it is suggested to set other expenses according to different engineering categories.
Field fund
On-site funds include temporary facilities fees and on-site management fees.
temporary facility fee
Temporary construction expenses are necessary for the construction unit to carry out the construction project, including the establishment, maintenance and demolition of some buildings and temporary facilities not included in the temporary construction project. Small concrete mixing and pouring system, auxiliary processing plants such as carpentry, steel reinforcement and machine maintenance, concrete precast component factory, small temporary facilities such as drainage for construction in the field, site leveling and road maintenance.
Temporary construction is indispensable to ensure the smooth progress of construction. According to the complexity, scale and construction method of the project, the temporary buildings shall be used reasonably. Therefore, the standard of calculating the rate by percentage in the cost of water conservancy and hydropower projects should be changed, and the influence of temporary construction on the project scale and construction method should be considered as a whole.
Site management fee
On-site management expenses are interpreted as labor costs, office expenses, travel expenses, fixed assets use fees for on-site management, on-site tools use fees, property management fees for construction sites, vehicle insurance and maintenance fees, safety management insurance premiums for construction sites and other expenses. In the current cost compilation system of water conservancy and hydropower projects, the site management fee is calculated according to the percentage of direct costs. [3] For example, the site management fees of point, line and area projects, central projects and local projects vary greatly. On the surface, the object of on-site management is the construction site personnel and the material resources consumed at the site, but from the deep point of view, the consumption of on-site material resources is dominated by the on-site personnel. From another point of view, the on-site staff have mastered the whereabouts of the on-site material resources. From this point of view, the calculation basis of site management fees should be paid from direct fees, which can be appropriate.
abstract
The compilation of water conservancy and hydropower project cost is a complicated and tedious work. There are many reasons that affect the cost of water conservancy and hydropower projects, which require the staff to improve, study theoretical knowledge hard, combine theory with practice scientifically and reasonably, and constantly improve the cost compilation. Ensure the accuracy of the project cost.
For more information about project/service/procurement bidding, and to improve the winning rate, please click on the bottom of official website Customer Service for free consultation:/#/? source=bdzd