...
Other considerations
It's almost always easier to work with piping and structural models near the origin from a graphics performance standpoint. Use Select options and Edit>Move to move the piping and/or structural model in order to synch their coordinates. You can use that same Edit>Move operation if you need to later move the model back to plant coordinates.
Structural analysis models typically include preliminary piping weight, wind, and friction loads. Smaller diameter piping (<12" NPS) is modeled using distributed gravity-direction loads on the beams based on tributary area, and larger diameter pipe loads are usually assigned as concentrated point loads or equivalent frame point loads. Structural models treat pipe friction as an assigned load, typically 10% of the weight load. Friction is not treated as a load in piping stress models, but as a nonlinear boundary condition which is a more rigorous approach. All of these preliminary piping loads in the structural model ignore load redistribution due to thermal displacement and other applied loads, and they ignore placement of heavy valves. That's why structural engineers need realistic pipe support loads from the piping stress team which account for thermal displacements and nonlinear pipe support behavior.
...