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3. ACI Committee 318. ACI 318-14: Building code requirements for structural concrete and commentary. American Concrete Institute, Farmington Hills, Michigan, USA; 2014.
4. AASHTO. AASHTO LRFD bridge design specifications. Association of State Highway Transportation Officials, Washington, D.C., USA; 2017.
5. British standards institution. BS 8110-1: 1997 Structural use of concrete - Part 1: Code of practice for design and construction; 1997.