Dear All,

I would like to ask if there is a way to convert buried pipe model to unburied pipe model. It so happen that we have the buried pipe model but the original file is not available and we want to make some modifications in the original file before converting it again to buried pipe model. Please feel free to give your suggestions. Thank you in advance.

Have you tried transfering buried model to neutral file?

I would caution you that you likely do not have the soil properties within the resultant buried piping model, upon conversion.

If this is a recently performed work, it might be worthwhile to request the original (or have the owner request the original for you).

Because you (probably) do not have soil properties included in your buried model (it's all been converted into equivalent spring supports), it puts a significant burden on the checker to validate such an analysis in the first place, and should've been rejected without the base model.

Thank you for your reply. I would like to know from Intergraph side Mr. Richard and Mr. Dave if they have any suggestion on this kind of situation.

The buried pipe modeler adds more nodes and (soil) restraints at those and existing nodes. The program will also zero out all densities of buried sections.
While reverting back to the original, unburied model would be best, you can work your geometry changes into the existing buried model and simply rebury it. The modeler will remove all restraints in the buried section and then insert the new set of (soil) restraints. You will have some extra nodes but the model should still be valid.