Abstract. The article presents general and specific factors that influence the generation and management of facility construction cost. It is suggested to create a national information system for costs formation in construction that would correspond to the current requirements of a dynamic requirements. Efficiency of the proposed methods shall be ensured by increased accuracy of estimates at the phase of investment decision taking for any public capital investments, from direct budgetary expenditure to extra-budgetary funds resources, subsidies and grants.

Introduction. Building information modeling is the main direction of development of automated design and control systems. An important component of information modeling is the transfer of data into construction management systems. The most complicated issue is the problem of creating the correct graph topology relevant to the process sequence and construction management experience. The development of automated progress schedule compilation system based on the use of a universal sequence developed earlier is examined. Materials and methods. As a result of the analysis of the progress schedule compilation process, the topology creation algorithm is divided into several stages. At the first stage, a text description of the information model is given, which is then converted into a list of building or structure elements. The list of elements should be transformed into the work item list and then supplemented with work items not reflected in the list of elements. This is a separate complex task, which is not examined in this study, and is the direction of further research by the authors. At the next stage, the work items in the list are assigned codes that define the location of the scope of works in time and space. Results. An algorithm for converting the work item list into a coherent work schedule, the topology of which takes into account the spatial location of the work area and the sequence of interrelated processes over time, has been developed. The sequence of works is determined by a preliminarily designed universal list. The list of requirements for the information produced by BIM models is developed. Splitting the algorithm into stages allows for manual correction of the work item list and the properties of work items, if necessary. Conclusions. The developed method allows for automation of the processes of creating construction plans based on the list of building elements and universal work sequence. At any implementation stage, the work item list may be interactively changed and supplemented. In the future, it is necessary to form a set of parameters for structural elements that will allow automating the choice of technological processes.

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The imperfection of structure and the maintenance of stages of a predesign stage of implementation of the investment project creates some problems which pass into the subsequent stages of the reproduction cycle of a capital construction project, forming additional expenses of time, money and human resources. The authors pay the main attention to the stage of justification of investments (mainly to the means of the federal budget) as to the key element of decision making on the project implementation and also to the technical-and-economical justification of the project, which determines the further design and construction of the facility of the real estate. It is offered to use the system of indicators for the assessment of efficiency of the made decisions on the basis of uncontrollable and controlled factors. The mathematical model of the factors, the order of definition of the extent of their influence is offered. Scenarios of the choice of the investment decision on the basis of the established principles in the conditions of uncertainty are described. The authors point out, that during introduction of the offered mechanism it is necessary to adopt the relevant amendments to the legislative and regulations of the Russian Federation, that in turn involves the emergence of a temporary log. However, the planned results of the work of the modernized system will affect positively on the reduction of duration of the predesign stage without any loss of its qualitative characteristics. Thus, that might become one of the key factors of sustainable development of modern cities. * Corresponding author: i.kar@inbox.ru Web of Conferences 193, 05002 (2018) https://doi.org/10.1051/matecconf/201819305002 ESCI 2018 represents by and large implementation of priority state programs, with attraction of financial resources of the federal budget. Process of adoption of investment decisions is the integral part of strategic planning which has to provide coordination of long-term goals of the state and the use of the resources, directed to implementation of priority programmes [1]. MATEC

Introduction. When designing buildings and installations, Building Information Modeling (BIM) is spread more and more widely. The adoption of national and international standards and classifications is of great importance for the implementation of information technology. Application of the BIM-technologies for constructing public buildings, in the first turn, medical ones, seems to be very promising. The paper discusses the problems of developing indigenous parametric blocks (families) and preparatory activities in using the BIM-technology. Materials and methods. One of the information technology tasks is to develop equipment specifications and transfer them through the technological chain of the construction facility life cycle. The creation and application of classifiers are necessary to prepare for using the BIM-technologies. Results. A project of an academic health science centre with an extensive equipment range is analysed. The project of a modern medical building contains a description of several hundreds of specific medical equipment types. The specifications should contain information, including denominations and quantities of the equipment units, data on overall dimensions and weights of the units, connection interfaces to the power supply, water supply, water drainage. When creating parametric blocks, the international classifiers Uniclass-2015 and OmniClass are often used. However, they do not cover the necessary equipment range and contradict the domestic practice of purchasing equipment and services for state demand. Conclusions. The cost of preparing for the design process as creating parametric blocks can make a total of tens or hundreds of man-days that should be taken into account when planning design activities. In terms of procurement for state and municipal demand, it is necessary to make design specifications following the available range of medical equipment.