Efficiency of tower cranes in the construction of low-rise buildings

Introduction. Lifting mechanisms are important in modern construction production, providing an efficient and safe way to move and lift materials and building structures. Stations, travel routes, and service areas for lifting mechanisms are reflected in construction master plans. Site design begins with the installation of lifting equipment. In common practice, when comparing crane options, technical and economic indicators associated with the purchase, rental and operation of the mechanism are taken into account, without taking into account how a particular mechanization option affects the location of construction infrastructure and technical and economic indicators of the construction plan. Due to the increasing space constraint, it is necessary to revise the system of technical and economic parameters for construction plans assessing.

Materials and methods. The normative-legal base regulating the construction site organization, lifting mechanisms placement and safe construction production is studied. Design and working documentation is analyzed: construction organization projects, projects of works production, projects of works production with application of lifting facilities. The variant technological design of construction plans was carried out and the influence of the accepted lifting mechanism on the compactness of the construction site at erection of low-rise objects was estimated.

Results. The obtained results expand the idea about the choice of lifting mechanisms for the erection of low-rise objects. It is suggested to supplement the system of technical and economic indicators of evaluation of the efficiency of the adopted technological solutions with the presented evaluation indicators, which take into account the location of hoisting cranes on the construction site and affect the compactness of the construction site.

Conclusions. The design of construction master plans should be varied and performed with the use of various lifting equipment. The effectiveness of choosing lifting machinery should be determined by a system of parameters along with the main technical and economic parameters to assess construction plans.

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