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The duration of an object construction is considered as a parameter expressing the concentrated influence of all stages of its formation, including design, preconstruction, construction, etc. It is shown that the construction stage, as the final stage, is the most flexible and its components that include organization of construction, technology and mechanization of construction and installation works promptly implement solutions from all previous stages, consisting of a large number of various methods and ways of influencing the construction duration. These activities allow reducing energy costs and making production less energy intensive. The decisions on combining the work of the preconstruction and the main periods of construction are given as an example.

The article considers reconstruction as the important direction of fixed assets reproduction. It provides information about industry specific features of the reconstruction and highlights the most likely works. It also shows the ways to improve the efficiency of reconstruction through the implementation of an integrated approach based on the joint development of solutions by all participants of the reconstruction works. As a result, when developing space-planning and design solutions, organizational and technological solutions are taken into account. The article also concerns the introduction of the most advanced technological processes, the rational use of the facility territory, taking into account the interests of the participants of the reconstruction works. The conditions for the production of reconstruction work are reflected in the real way.

The article contains the factors determining the choice of methods for organizing the construction and production of construction and installation work for the construction of high-rise buildings. There are also indicated specific features of their underground parts, characterized by powerful slab-pile foundations, large volumes of earthworks, reinforced bases and foundations for assembly cranes. The work cycle is considered when using reinforced concrete, steel and combined skeletons of high-rise buildings; the areas of application of flow, separate and complex methods are being disclosed. The main conditions for the erection of high-rise buildings and their components are singled out: the choice of formwork systems, delivery and lifting of concrete mixes, installation of reinforcement, the formation of lifting and transporting and auxiliary equipment. The article prescribes the reserves of reduction in the duration of construction due to the creation of: complex mechanized technologies for the efficient construction of foundations in various soil conditions, including in the heaving, swelling, hindered, subsidence, bulk, water-saturated forms; complex mechanized technologies for the erection of monolithic reinforced concrete structures, taking into account the winter conditions of production and the use of mobile concrete-laying complexes and new generation machines; modular formwork systems, distinguished by their versatility, ease, simplicity in operation suitable for complex high-rise construction; more perfect methodology and the development of a set of progressive organizational and technological solutions that ensure a rational relationship between the processes of production and their maximum overlap in time and space.

The article considers the levels of organizational and techno-logical documentation, solution of which is subject to evaluation (construc-tion projects organization, labor production projects, technologic maps, particular sections of documents and solution of local objectives). Groups and a list of applied assessment indicators are also given. The approaches of private and complex evaluation of organizational solutions are revealed - methods of criteria estimation (average weighted, additive, multiplicative, generalizing) methods for modeling indicators (continuity, combination, rhythmicity, uniformity, intensity of production labor), multiple correlation methods (polynomials of the 1st and nth degree). At the same time, the conditions for the expedient application of such methods with appropriate recommendations and explanations are described.

The article contains substantiation of the need for investment and construction projects in various sectors of the construction production. On the basis of domestic and foreign experience it describes the concept of the client (customer) and his functions and tasks in the implementation of such projects. It also systematizes the main stages of the customer’s activities, which are presented as a preparation for the construction, development of construction sites, monitoring the progress of the construction, commis-sioning and commissioning of facilities. There is also a determination of time intervals at each stage, the final formula for calculating the duration of the investment project due to the given the shared stages. The article also gives optimization variants in some sectors of construction production.