This paper presents the behavior of reinforced concrete column subjected to varied intensity of blast load. A simplified 3D numerical model has been presented to show the load carrying capacity or residual strength of RC column under imposed load and encounter a blast load. With varied intensity of imposed load, the behaviour of RC column and residual strength variation has been investigated, wherein, different imposed load to column resembles the storey level. After the validation of numerical model with experimental results, damage pattern and residual strength of RC column has been discussed in detail with varied standoff distance (500–2000 mm) and weight of TNT explosive from 5 to 25 kg.