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2. BS 5400. Steel, concrete and composite bridges: Part 5: Code of practice for design of composite bridges. London: British Standards Institution, 1979.
3. Load and resistance factor design specification for structural steel buildings. Chicago, IL: American Institution of Steel Construction (AISC), 1993.
4. ACI Committee 318. Building code requirements for reinforced concrete. Detroit, MI: American Concrete Institution, 1992.
5. Strength of steel-encased concrete beam columns;Furlong;Journal of the Structural Division, ASCE,1976