Algorithmization of the optimization apparatus in the organization of the current planning at the companies of the building complex

The issue of optimizing the decisions of the planning system at various levels and stages of construction production is one of the most important aspects of managerial and engineering activities at the construction enterprise. Such optimization is a complex multifactorial task, the solutions of which are reflected in the established documents based on the results of planning. The main document in this respect is the production and economic program (plan) developed by the planning and economic department of the corresponding construction enterprise, depending on the existing destabilizing factors and constraints established by the results of the integrated planning procedure (annual and strategic). The article discusses the concept of the annual production program of a construction company and a new approach to optimize the algorithm for distributing the resource potential between objects of the annual program.


Introduction
The concept of the annual production and economic plan (program) for the Russian-Soviet building complex emerged in the 1920s in the development of future so-called "fiveyear plans" aimed at an effective and dynamic breakthrough in the country's economic development (including the USSR) (see Tables 1, 2) through the development and production implementation of target indicators of socio-economic development in the programs of companies. Such planned economy with rigidly fixed performance indicators of programs formed the prerequisites for the development of the annual (or as it is called in the technical literature -current) planning of the construction enterprise activity, which could include in its integrated solution system the most optimal ways to implement the established plan for the facilities in the required time frame and with the lowest possible cost of all types of resources. So, you can refer to developments in the field of methodological support of planning activities of the production system (program) of a construction enterprise, which, for example, in the USSR was carried out by the Research Institute of Construction Economics (RICE). This organization in 1982 published the next edition of the "Methodological recommendations on the preparation of the production and economic plan (production and estimation plan) of construction organizations", which describes in detail the methodology for the preparation of this current planning document.  In accordance with the realities of a planned economy, annual planning was carried out more systematically than in the conditions of today's construction complex and the market as a whole. Naturally, this is due to the constant values of the initial (input) data in the planning system and clear indicators that should be reflected in the plan (see Table 3). Table 3. Input data in the system of annual planning for the formation of the construction and financial plan of a building enterprise, association or trust.
No. Name of input parameter (indicator) 1.
Terms of commissioning production facilities and facilities, including the increase in capacity due to technical re-equipment and reconstruction of existing enterprises 2.
The volume of marketable products 3.
The limit of the number of workers and employees 5.
Payments to the budget and budget allocations 8.
The task of the introduction of new technology (scientific organization of labor and production) 9.
Volume of supplies of materials, machinery, mechanisms and other material and technical resources 10.
Other indicators set by the company, association or trust Based on the above data, the positions of the indicators are generated, which are given in the construction and financial plan. From here, its terminal structure is formed with all internal interconnected subsections of the annual planning system (see Table 4, 5). Table 4. Indicators of construction and financial (estimation) plan of a construction enterprise, association or trust (in the conditions of the state's planned economy).
No. Initial indicators of the annual plan of the construction company, reflected in the relevant sections of the construction and financial plan 1.
Volumetric statement of construction products 2.
Volume list of contract work 3.
Statement of calculation of physical volumes of work 4.
Technical development plan (economic efficiency of the enterprise) 5.
Plan your own capital investments 8.
Plan to reduce the cost of construction and installation works 10.
Estimated use of funds for economic incentives 11.
Financial plan Table 5. Structure of construction and financial (estimation) plan of a building enterprise, association or trust.
No. The structure of the annual plan of the construction company (15 sections) 1.
Production Efficiency Plan 2.
Construction plan for the year (program of the construction company) -Annual program 3.
Technical development plan 4.
Logistics and Equipment Plan 8.
Plan your own capital investments 9.
Profit plan and cost reduction of construction and installation works 10.
Plan for the formation and use of economic incentive funds No.
The structure of the annual plan of the construction company (15 sections) 11.
Financial plan (balance of income and expenses) 12.
Plan for the development and use of production capacity 13.
Social development plan 14.
Plan for conservation and rational use of natural resources 15.
Calculation of the consolidated plan for all enterprises and organizations of the association (trust) In this form, as of today, production and estimation plan (annual building production and economic plan) does not exist in the planning system of companies (even the largest representatives of the building complex segment), which is primarily due to the innovative mechanisms of the modern market economy, which contribute a large number of destabilizing factors in the planning of construction production for the annual program. At the same time, it is clear, that modern annual production and economic models of an enterprise include in their own structure elements of a production and estimation plan (the concept of a state model with a planned economic system), such as the production program -one of the main elements of a production and estimation plan -remains unchanged. Moreover, the issues of optimization of the production program decisions (including the optimal methodologies for the formation of calendar schedules for program objects) are an extremely relevant area of knowledge and further scientific research.

Materials and Methods
If we describe the mechanism for the formation of the annual plan of a construction enterprise in a planned economy (within the framework of the implementation of the construction production and estimation plan), we obtain the following scheme.
As for the USSR (until 1991), the state was conditionally divided into areas dominated by certain ministries specializing in a specific industry. For example, in the Ural part of the USSR, the ministry "Mintyazhstroy" had priority, in the European part -the Ministry of Industry and Construction, and so on. According to the results of the next congress of the CPSU (once every 5 years), a directive on the directions of the country's development was approved (published in the state newspaper "Pravda"). This directive was worked out by the State Planning Committee according to two fundamental schemes -sectoral and territorial, the plan was approved at the level of the State Planning Committee of the region. Further, the Ministry transferred (lowered) the planned scope of work to the level below -subordinate to "Glavk" and "Trusts", according to the results of which the Title lists were formed, which regulate the plan for putting the program objects into operation by year. Thus, usually by the 1st March of each year, the Trust had information about its stable annual planned scope of work for the implementation of a corresponding number of objects that requires a constant distribution of a resource after planning (a static resource management system). "Trest" However, before the period of the so-called "Perestroika" ("Conversion"), the originally approved plan for the introduction of production and residential capacities could be disrupted due to the impact of destabilizing factors on the building production system. These failures of the previously static and stable system of the planned production cycle began to violate the pre-existing balance in the industry, the planned pace of production of finished construction products was disrupted. Under these conditions, the CPSU adopted an unscheduled decision on additional volumes of construction products and sent it to the State Planning Committee and the relevant ministries. The system of resource regulation in the "Trusts" began to acquire the features of a dynamic system, changing under the influence of the external environment.
the final finished product (for example, steel) of the industry (construction, engineering, etc.) that requires a certain resource availability; initial raw material resource; ∆additional resource requirements resulting from import deliveries (if foreign currency is available) or as a result of the construction of new compensating plants. In the conditions of modern economy, the balance by branches is broken even more significantly, the entropy nature of changes and additions to the program with new objects (of a different order of criticality) is widespread. It becomes obvious that optimization processes are becoming a tool to reduce risks and material costs in the process of implementing the projects of the construction company's production programs. Along with the existing developments in the field of optimization of scheduling and resource allocation planning [1][2][3][4][5][6][7][8][9][10][11][12][13], the authors propose a more extensive optimization algorithm for managers during the formation of production programs.

Results and Discussion
The basic principle of construction of the developed algorithm is that the costs (volume) of the amount of labor resources for all objects of the production program in a specific crosssection of the resource schedule should be minimal (formula 2).
1 -Resource consumption for object number 1 of the production program of the construction program;

No.
Features of the static resource allocation system in a planned economy Features of the dynamic resource allocation system in a modern market economy  In this case, the costs (volumes) mean the difference between the planned (see Fig. 4) and actual resource consumption (formula 3).
total actual time of work at the facility approved by the production program; the directive deadline for performing work at the facility in accordance with the construction contract.
A truncated algorithmic approach to the process of planning and allocating resources will be represented by the following block scheme (see Fig. 4).

Conclusions
The purpose of modern business to enter the small business segment becomes unwarranted -such small enterprises in an unstable economy and in the absence of a standardized algorithm for current planning (in close connection with the strategic), unable to cover different types of objects offered in the market of construction and engineering services, simply become uncompetitive. The significant difference between the planned and actual indicators of resources in case of adding a new object at the stage of formation of the production program often does not allow for a smooth redistribution of resources between new and existing volumes of construction and installation works. Algorithmization of the process of such planning would allow small and medium-sized organizations to function on a par with large holdings, since the mechanism for distributing the resource field in this case takes a clear mathematical and technological look, justifying the enterprise's managers the current planning solutionto include a new object in the production program, or this step will bring significant risks.