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The article is sanctified to the further development of the utility (use-value) conceptof economic theory by its spread to a new subject-object area – the construction industry.A technique for calculating the utility economic effect and the utility economic efficiency of construction equipment using hydrocarbon fuels and electric energy is proposed. Results over of approbation of this methodology are brought as it applies to the certain standards of building technique. It is shown that this methodology allows to estimate (to compare) effectiveness of the use of building technique from the point of view of basic economic destiny of every technique to save labour of man.

USEFUL (CONSUMER-VALUE) CONCEPT ECONOMIC THEORY AND ITS USE IN STROWNINGS FOR EVALUATING EFFICIENCE OF NEW TECHNICS