摘要：For definition of cost of works on the engineering technical investigation we need to apply some correcting coefficients presented in the article. These coefficients are recommended and show the difficulty of real investigation. We have found some other coefficients, that reflect the conditions of investigation more exactly, based on real works in certain investigation organization, that are not recommended in standards. For each coefficient we bring the frequency of its use, based on the data of certain organization. If the coefficient is used rather often but not always, we think it possible to obtain the right value of the coefficient. The obtained results for the coefficients are compared to the new regulatory documents. The comparison lets us say, that coefficients, brought in different documents vary. Moreover, for certain cases, met rather often in the practice of investigation, there are no coefficient in the recommended sourcebook. So we propose to create the common system of coefficients, based on statistics of several investigative organizations.
