Comparación de costos a través de cambio de materiales de acero estructural a hormigón armado en una nueva propuesta estructural sismorresistente para un edificio de parqueaderos de 8 pisos

Abstract

This final project aims to analyze and compare two structural alternatives for an eight-story building primarily intended for parking, with the rooftop designated for commercial use, located in the city of Quito. The comparison focuses on two construction systems: Structural Steel and Reinforced Concrete, evaluating their structural behavior and economic feasibility. To this end, preliminary sizing of the structural elements was carried out based on the loads established in the Ecuadorian Building Code NEC-SE-CG section. Subsequently, a linear dynamic analysis was performed using ETABS v21 for both systems, ensuring compliance with regulatory requirements and seismic structural safety. Based on the results obtained from structural modeling results and the verification of the structural elements, a geotechnical evaluation and foundation design were carried out according to the parameters established by current regulations. Using all this information, structural drawings were developed in AutoCAD to quantify the work volumes and establish a reference budget through unit price analysis (APUs) according to CAMICON. The results present significant differences in structural behavior, self-weight, execution time, and overall costs between the two systems. The comparison allows the identification of advantages and limitations of each alternative, providing useful input for decision-making in similar projects where a balance between structural performance and economic viability is sought.