info:eu-repo/semantics/article Annals of the university of Oradea, Fascicle of Management and Technological Engineering 23(2) All rights reserved eng Abstract: Application of fracture mechanics at design of RC buildings will provide significant benefit. It will contribute that different size of premises to have the same security. In this way, the security and the cost of construction will be enhanced. There will exist a greater possibility of applying new designs and materials. Especially in large RC buildings, as well as in high-strength premises, the premises made of concrete with the steel fibers, prestressed concrete, large concrete dams, nuclear power plants, the facilities that require high safety, whose damage can cause a disaster, the application of fracture mechanics is of great significance. The impact of size, which relies on mechanical fracture can be defined as the theory of fracture which for the design of RC elements take into account resistance and energy of fracture. https://phaidrabg.bg.ac.rs/o:33297 doi:10.15660/auofmte.2014-2.3028 ISSN: 1583-0691 Manić, Nazim Tarić, Mirsad Šerifi, Veis Džubur, Žana 2014 application/pdf 388420 bytes Comparative analysis of the influence of size on the beams of different structures of concrete Keywords—impact of size, compressive strength of concrete, fracture, interpolation, beam.