Frequently asked questions on modeling offshore underwater / sub sea piping:

Item #1: Model Pipe resting on the seabed floor

Item #2: How to model a Concrete Mattress for underwater piping?

Item #3: How to model riser clamps on subsea / underwater piping?

Item #4: How to model Concrete Encased Steel Pipe for subsea / underwater piping?

Item #5: Is AutoPIPE software suitable for the analysis of subsea pipeline crossings?

Item #6: Does AutoPIPE consider external pressure or temperature for underwater / subsea piping?

Item #7: Is AutoPIPE suitable for deep offshore analysis as regard to calculating true pipe wall force which will take into consideration the end cap effect and external pressure?

Item #8: Is it possible to simulate the free catenary for subsea / underwater pipeline?

Item #9: What soil calculation method should be applied to underwater / subsea piping?

Item #10: How many nodes need to put at the pipeline's Wave / surface interface in order to simulate the hydrodynamic forces CD and CM values on an underwater / subsea piping?

Item #11: How to enter Hydrodynamic data for mass points located between actual node points?

Item #12: What are typical settings for seabed piping and riser on offshore underwater / subsea piping?

Item #13: How can I verify if hydrodynamic data is being applied to my seabed piping model?

Item #14: Is marine growth thickness on a riser pipe included for Buoyancy loads and Wave loads?

Item #15: On long risers supported at the bottom, does AutoPIPE calculate the compressive stresses due to selfweight?

Item #16: In AutoPIPE, how are the hydrodynamic coefficients determined when they are set to Automatic?

Item #17: All hydrodynamic coefficients change significantly when a pipe comes close to, or lies on the seabed. Is this effect incorporated automatic in AutoPIPE's calculations?

item #18: How to model a subsea expansion loop in AutoPIPE?

Item #19: Can all dynamic analysis (ex. Response Spectrum, time history, Harmonic, etc..) be performed on underwater piping correctly?

See Also

Modeling Approaches

Bentley AutoPIPE