Comparative Study of Cross Section Area Sizing Armatures Longitudinal Traction on Solid Slabs

Ano: 2016 | Volume: 2 | Número: 8

Autores: Doriedson Sousa Dias, Charles Ribeiro de Brito, José Cláudio Moura Benevides, Marco Antônio Guerreiro Prado Filho, José Roberto de Queiroz Abreu

Palavras-chave: structural dimensioning, bares-czerny, eberick, united limits last, united services limits

Resumo Inglês:

The development of structural project for buildings is of fundamental importance in the construction industry, given the fact that the buildings constructed under the provisions of a good project will surely meet  the  security,  usability  and  economy.  The  construction  is  an  economic  activity  that  directly impacts  on  society  as  a  whole,  is  of  paramount  importance  that  the  professionals  involved  in  the preparation of these projects are aware of the importance of the conception for excellent projects. This research  aims   to  make  the dimensioning sign of cross-sectional  area   of longitudinal  tensile reinforcement (A_s  and A'_s) positive and negative, massive slabs of pavement coverage of a residential building,  through  two  different methods  (theoretical and  computational).  For this,  the  methodology applied in calculating these armors, we use the theory of Bares-Czerny, as well as the use of Eberick computational tool, keeping in mind the classical concepts of engineering and norms of the Brazilian Association  of  Technical  Standards  (ABNT).  After  completion  of  these  calculations,  we  present results in tables and graphs and are held discussions in order to evaluate which method best suits the measurement  of  these  armor  and  leads  to  the  development  of  structural  projects  that  result  in  the execution of a safe, rational, functional structure, economic and, most importantly, meets the United Limits  Last  (ULL)  and  United  Services  Limits  (USL).  With  the  completion  of  the  discussion,  we conclude that both methods meet the proposed objectives. However, using the computer program, it is possible to elaborate structural projects that minimize the loads applied on the building, will become more  slender  and  therefore  more  economical,  with  dynamic  and  effective  results.  However,  we emphasize that the program serves only to assist the engineer and not replace it. The tool that is now used does not have own intelligence, this being a designer attribute. That is, the fundamental concepts of structural analysis such as the equilibrium conditions, types of bonds, stateless and stability, among others,  acquired  with  the  field  of  dimensional  theories,  hence  the  importance  of mastery of these theoretical concepts by the engineer.