1. EN 1992-1-1. Eurcode2: Design of concrete structures. Brussels, Belgium: CEN, 2004.
2. AASHTO-L-RFD Bridge design specifications;American Association of State Highway and Transportations,2004
3. CSA S6. Canadian highway bridge design code. Canadian Standard Association, Ontraio, Canada; 2000.
4. AS 3600-2001. Australian standard concrete structures. Sydney: Standards Australia International Ltd, Canada; 2001.
5. GB 50010-2010. Code for design of concrete structures. Beijing, China: ChinaArchitecture and BuildingPress; 2010.