1. British Standards Institution. Eurocode 4, ENV 1994-1-1. Design of composite steel and concrete structures. Part 1.1: General rules and rules for buildings. London; 1994
2. American Concrete Institute. Building code requirements for reinforced concrete and commentary. ACI 318-02/ACI 318R-02, ACI Committee 318. Detroit; 2002
3. American Institute of Steel Construction. Load and resistance factor design specification for structural steel buildings. Chicago; 1999
4. Strength of steel-encased concrete beam columns;Furlong;J Struct Eng Div,1967
5. Strength of concrete filled steel tubular columns;Knowles;J Struct Eng Div,1969