1. ASTM, Standard Specification for Structural Steel for Bridges. West Conshohocken: American Society for Testing and Materials, A 709/A709M, 2010.
2. ASTM A325, Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength, American Society for Testing and Materials, 2010.
3. ASTM A490, Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength. American Society for Testing and Materials, 2012.
4. ASTM A307, Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI Tensile Strength. American Society for Testing and Materials, 2012.
5. ASTM A563, Standard Specification for Carbon and Alloy Steel Nuts. American Society for Testing and Materials, 2007.