1. American Association of State Highway and Transportation Officials LRFD bridge design specifications 1st Ed. (1994). AASHTO Washington D.C.
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3. American Association of State Highway and Transportation Officials standard specifications for highway bridges 16th Ed. (1996). AASHTO Washington D.C.
4. American Institute of Steel Construction specification for structural steel buildings allowable stress design and plastic design 9th Ed. (1989). AISC Chicago Ill.
5. American Institute of Steel Construction specification for the design fabrication and erection of structural steel for buildings 6th Ed. (1963). AISC New York N.Y.