1. American Association of State Highway and Transportation Officials (AASHTO). (1996). AASHTO standard specifications for highway bridges 16th Ed. Washington D.C.
2. American Concrete Institute (ACI). (1995). “Building code requirements for structural concrete and commentary ” ACI 318R-95 Detroit.
3. American Institute of Steel Construction (AISC). (1986). Load and resistance factor design specification for structural steel buildings Chicago.
4. American Petroleum Institute (API). (1993). “Recommended practice for planning designing and constructing fixed offshore platforms—load and resistance factor design.” API RP 2A-LRFD Houston.
5. Barker R. M. Duncan J. M. Rojiani K. B. Ooi P. S. K. Tan C. K. and Kim S. G. (1991). “Manuals for design of bridge foundations.” NCHRP Rep. No. 343 Transportation Research Board Washington D.C.