O encabecamento das armaduras urbanas nacionais: uma revisão

Starting from Jefferson's 'law of the primate city' and Zipf's 'rank-size rule', examines the question of the heading of national urban systems, seeking to stretch the analysis as far as possible in space and time. Thus, 131 countries were included in the study, most of them also viewed from the evolutive side. It was found that there is a main tendency for urban systems to evolve to the primate leadership, maintained by Jefferson as the normal pattern. Among the various factors that act in this direction, the attraction exercised by political power located in the capital cities is dominant.-English summary

Estudo experimental de vigas de alvenaria estrutural sujeitas à flexão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Diagnósticos dos procedimentos executivos nos canteiros de obras de alvenaria estrutural

Pós-graduação em Engenharia Civil - FEIS

Análise numérica da ductilidade de vigas de concreto armado convencional e de alto desempenho

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Influência do graute e da taxa de armadura no comportamento da alvenaria de blocos de concreto

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Considerações sobre a armadura transversal de pilares de concreto armado

There are regulations that establish conditions and enable the design of armor columns. The NBR 6118 features statements relating to the transverse reinforcement as spacing, reinforcement diameters provision in structural elements and others. However, the norm in force does not provide an explicit methodology for the design of stirrups in different situations. We do not propose even a calculation model for this equipment and provides normative considerations for maximum or minimum values of spacings and armor in diameter. It is noteworthy that the classical references also do not provide a calculation routine sizing of transverse reinforcement and only makes the checks as the normative conditions for the given data. Based on this assumption and the problems that may occur in sizing error, both for spacing and for the proposal of the stirrup diameter, this study demonstrates that armor calculation method already established in the literature and then through an intuitive tool and available develops a spreadsheet based on this calculation routine. It takes as reference the one developed by Emil Moersch (1902) and the calculation model proposed by BUFFONI E SILVA (2006). Finally the paper presents a rational design of shear reinforcement and confronts these values with some numerical examples to show its truth