1. Association of State Highway and Transportation Officials, Washington, DC.
2. ACI (2005). Building requirements for structural concrete. American Concrete Institute, Farmington Hill, MI.
3. AISC (2005). Steel construction manual. 13th ed., American Institute of Steel Construction, Inc., Chicago, Illinois.
4. AISC (1999). Load and resistance factor design specification for structural steel buildings. American Institute of Steel Construction, Inc., Chicago, Illinois.
5. AASHTO (1998). Load and resistance factor design specifications for highway bridges. 2nd ed., American