Com o objetivo de fornecer subsídios técnicos para projetos de silos prismáticos metálicos para uso industrial, mais especificamente para fabricas de ração, como também contribuir para o desenvolvimento da futura norma brasileira especifica para projeto de ações e fluxo em silos. Apresenta-se uma analise de evolução técnica das fabricas de ração no mundo ate os dias de hoje com a concepção atual, atendendo as exigências de mercado que, a cada dia, torna-se mais competitivo e necessita do controle de qualidade total para preencher os pré-requisitos das normas nacionais e internacionais, já que o pais esta abrindo o mercado ao capital externo. Foram estudados os painéis de construção de silos prismáticos para fabrica de ração com conformação ziguezague na horizontal e inclinação de 20 graus com o plano vertical, para aumentar a inércia das paredes e não acumular ração, que provocaria deterioração e/ou infestação de fungos e bactérias os quais contaminariam as rações, provocando danos econômicos aos fabricantes e aos criadores de animais. Os resultados experimentais foram comparados com os obtidos com as teorias simplificadas propostas para o calculo estrutural de silos e com o software estrutural lusas, que utiliza o métodos dos elementos finitos. A comparação dos resultados teóricos com os obtidos experimentalmente mostram que a teoria de Troitsky apresenta boa correlação.

This research was developed purposing to generate technical hints for the design of steel prismatic silos for industrial use, especially in the powder industry, as well as to contribute for the set up latter on of a Brazilian standard specifically for the design of actions and flow in silos. The world powder industry technological evolution up to now was evaluated, trying to take care of the trade demand, that always becomes more competitive, and thus requiring a total quality control to match the national and international standards, mostly because the Brazilian trade getting so much attractive to the foreign capital. It was determined the physical properties of ingredients of two kinds of powder, which are used in most of the powder made in Brazil. These are the first properties evaluated in Brazil with the TSG70-140 machine, that is known over the world as "Jenike Shear Cell", and is recommend by most of the silo action standard existing in the word, with the purpose of adopting the necessary parameters to calculation of action and flow of materials storage. It was studied construction panels of prismatic silo for powder industry, with zigzag conformation and a slope of 20o from the vertical plan to increase the wall inertia and do not accumulate powder, that it would cause deterioration and/or infestation of fungus and bacterias that would contaminate the powder resulting economical damage to manufacture and animal criator. It was done tests in to determine the rigidity and strength of the panels in full scale, that will make up the formed prismatic silo wall for modular construction. The experimental results were compared to simplified theories proposed to structural calculations of silos, and to the results given by the LUSA software which utilities finites elements. These comparations showed that the theory of TROITSKY (1988) presents a good correlation, and so it is suitable for the panel design.