Comparison of Axial Load on Column by Tributary Area Method and 3D Modelling by ETABS

Abstract

Structural analysis of building frame is most important for human being to design a safe nation. Blessing of science now a days to analyze a structure, engineers are used Finite Element Model (FEM)[1]. But in before the analysis was performed tributary area method (TAM) in where the stiffness of slab not considered. So, it is very important to compare the result TAM and FEM also verify the structural safety. In this paper, it is an endeavor to realize how to distribute the slab loads on columns in a structure and grasp the effect of slab stiffness in a finite element model to assign slab as shell and membrane properties for vertical load. Finite element model was created with a commercial software ETABS to compare the results obtained from TAM. Based on the analytical results, Finite element model is the suitable method to calculate structure reaction on columns and design according to the result.