I. Technical and economic indicators and optimization requirements for general projects The technical indicators of the entire construction project include production capacity, product quality, consumption quota, energy consumption, total building coefficient, and labor productivity. Economic indicators include product cost, total investment amount, economic benefit, and investment recovery period. The product cost optimized by the design scheme is an indicator that comprehensively reflects the technical, economic, and management levels. The industry mainly analyzes product cost indicators to test the advancement and rationality of the design.
For the construction organization design of general engineering projects, the main indicators of technical and economic analysis include total construction period index, unilateral employment, quality grade, main material saving index, usage and cost of large-scale machinery, and cost reduction indicators.
II. Main economic and technical indicators of mining projects 1. Main economic and technical indicators of mine project construction The engineering construction organization design of mine projects should generally put forward technical and economic indicators for the following contents: total construction period of mines, monthly progress indicators of wells and main roadways, and architectural installation Labor productivity, investment dynamics of construction and installation projects, and temporary engineering budgets account for the proportion of total investment in mine construction and installation projects.
2. Main technical and economic indicators for unit construction and construction organization The technical and economic indicators in the construction organization design of the project shall include: construction period index, labor productivity index, quality index, safety index, cost reduction rate, degree of mechanization of major engineering types, and three major materials. Saving indicators. These indicators should be calculated after the construction organization design is basically completed, and reflected in the documents of the construction organization design, as the basis for the assessment.



Check Valve

Check valve is an automatic valve, its main role is to prevent the media back, and can be applied to the pipeline system of fuel, water, oil, steam and other media.

Advantage: Small in size, light in weight, compact in structure, easy in maintenance.


Check Valve,Brass Check Valve,Carbon Steel Check Valve,Cast Iron Check Valve

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