Recently, the use of composite structures composed of steel plate and in filled concrete has become increasingly popular in Civil engineering structures. This is because of their excellent earthquake resistant properties such as energy absorption capacity. In the present investigation, an experimental study has been carried out. The main objective of this study is to find out the ultimate moment carrying capacity of concrete filled steel box members (CFSB).
 Uy, B. (2000) Strength of Concrete Filled Steel Box Columns Incorporating Local Buckling. Journal of Structural Engineering, 126, 341-352. http://dx.doi.org/10.1061/(ASCE)0733-9445(2000)126:3(341)
 Uy, B. (2001) Local and Postlocal Buckling of Fabricated Steel and Composite cross Sections. Journal of Structural Engineering, 127, 666-677.