The level of use of mounting cranes is influenced by the correct organization of installation work and the correspondence of the accepted mounting cranes of the normal technology for installing the structures of the building or structure. The low level of use of mounting cranes in many cases worsens the economic result of work. The level is characterized by the degree of coverage of this equipment of installation work in the building, using it in time and for carrying capacity. This coefficient is judged by the effectiveness of the selected mounting crane. Its greater value indicates that this crane will perform a larger amount of installation work with a lower involvement of additional cranes, individual tools, etc., which leads to reducing prices for installation work. After construction, you can go on vacation, for example, look at hotels in Alania here HROS. //. HTM.
The degree of use of the mounting crane in time during the entire period attributable to the installation depends on the correct choice of the routes of the crane and its positions, the adopted sequence of installation of structures and the organization of installation work in general.
The degree of use of carrying capacity affects the cost of installation work.
The use of a crane with a large carrying capacity for the installation of light structures leads to its under -use and rise in cost of installation work. To improve the use of equipment, it is necessary to enlarge structures. There is such an option as the use of a smaller capacity.
The degree of use of the crane according to such properties as the carrying capacity is determined by the following calculations, performing installation in separate streams.
The maximum crane load capacity is set with a minimum shooting of the boom and the largest height of the load lifting. Hence the maximum possible work is determined by the amount of cargo lifts to the maximum height.
The methodology for determining the weighted average coefficients of the use of crane for one -story industrial workshops, proposed from. A. Pichugin ‘. It gives a more accurate way to determine a 1000 m2 of the total area of the workshop, taking into account the possibility of simultaneously lifting several elements of the workshop and installing several elements from one crane parking.
The number of elements weighing up to 1 g is 32.9%, up to 3.3 tons -60.9%, up to 7 t -2.06%, up to 11.5 g -4.12%.
At the same time, the weight of prefabricated elements up to 1 ton is 12.75%, up to 3.3 g – 58.33%, up to 7 g – 6.76%and weighing up to 11.5 tons – 22.16%.
The calculation data show that for the construction of a 1000 m2 of the area of a typical building of the blacksmith-press workshop, taking into account the coefficient requires 383 crane cycles or 104.94 machines of machine-time time.