Concrete filled steel tabular columns have gained immense importance in recent decades due to numerous structural benefits especially in developed countries like china, Japan, U.S.A, Britain. Composite circular steel tubes Columns - with light weight concrete as infill for two different grades say M20 and M30 are tested for ultimate load capacity by previous researchers (both at international and national) in addition to results obtained by previous post-graduate students of Ghousia Collage of Engineering, R & D center, Civil department have been verified by ANOVA approach is presented in this paper. Steel tubes are tested for the different combination of Length, Thickness & Diameter with the help of Taguchi’s L9 (Latin squares) -Orthogonal array in order to save time and cost of experimentation and also to determines the effect of each parameter. This study further presents a numerical investigation into the behavior of concrete filled tabular columns using three-dimensional nonlinear finite element software ABAQUS 6.10.1 is carried out in this paper. The analytical results obtained are compared with the numerical results obtained from Abaqus 6.10.1. For this purpose a comparison between design codes Eurocode -4 and AISC-LRFD has been made in evaluating the axial compressive strength of concrete filled tabular columns. The obtained results were analyzed with the help of Signal/Noise (S/N) Ratio, Main Effects Plot & Analysis of variance (ANOVA) using Mini Tab V16. Regression equations are developed for all two grades of infills separately. This paper focuses on modeling of Infilled concrete filled steel tube (CFST) column under axial loading and economical aspects.