1. 1.  ACI Committee 318, 2014, “Building Code Requirements for Structural Concrete (ACI 318- 14) and Commentary,” American Concrete Institute, Farmington Hills, MI.
   2. BS 8110-1:1997, 1997, “British Standard Code: Design of Concrete Structures,” British Standards Institution, London, UK.
   3. CSA A 23.3-04-2004, “ Design of Concrete Structures”, Canadian Standards Association, Canada.
   4. EN 1992-1-1:2004, 2004, “Eurocode 2: Design of Concrete Structures. General Rules and Rules for Buildings,” European Committee for Standardization.
   5. S 456 : 2000, “Plain and Reinforced Concrete Code of Practice”, Bureau of Indian Standards, New Delhi, India.
   6. NZS 3101 :Part 1:2006, “The Design of Concrete Structures”, Standards New Zealand, Wellington, New Zealand.