oshi P John, Dr. Joanna P S, Parvati T S, and Eapen sakaria. 2014. “Cyclic Behaviour Of Double Skinned Concrete In-Filled Beam-Column With Outer Cold Formed Square Section and Inner PVC Circular Sections”. International Journal of Advance Engineering and Research Development (IJAERD) 1 (11):174-79. https://www.ijaerd.org/index.php/IJAERD/article/view/335.