SAP2000’s sophisticated analytical methods and design algorithms directly address the Oil and Gas industry’s structural engineering requirements. Analytical features include the ability to easily capture rotational acceleration due to pitch, roll and yaw; perform simple linear or complete nonlinear snap-through buckling analyses; compute frequency-domain response for harmonic and non-harmonic periodic loading; calculate power-spectral density response; apply automated wave loading and API 4F wind loading; pushover analysis and much more. The implementation of the API 4F, API 2A (offshore structures) and Norsok N-004 (offshore structures) design codes allows the engineer to optimize designs with greater accuracy and speed, including punching shear checks. Structural models are very easily created through the integrated 3D SAP2000 environment where users can model all structural geometry, complex built-up sections, loading, and analytical components. Spreadsheet capability is integrated within the graphical environment for creating or modifying the model as well as viewing or processing the analysis and design results. Customizable reports can be produced that include graphical and tabular data. The Open Application Programming Interface (OAPI) can be used to develop special-purpose plug-in tools or to link with in-house programs.