Análisis comparativo de las normativas históricas ecuatorianas para las tipologías estructurales de hormigón armado de 2 a 4 pisos en la ciudad de Quito

Abstract

This paper reviews the different regulations for the design of reinforced concrete structures in Ecuador, starting with the 1951 Ecuadorian Building Code (CCE-51), the 1979 Ecuadorian Building Code (CEC-79), the 2001 Ecuadorian Building Code (CEC-01) and finally the Ecuadorian Building Standard (NEC-15). Reviewing the typical structural typologies in the city of Quito, two of these are used to carry out a pre-design of their elements, which will be taken to a deeper analysis through a commercial software from which values of axial forces, moments and shear forces will be extracted. With these data we proceed to a definitive design observing important changes of the seismic-resistant design such as the natural period of the structure, basal shear and seismic loads coefficient; in the case of reinforced concrete structures design, differences in steel quantities, minimum design requirements and longitudinal and transverse steel spacing of an element are observed.