different levels

[peet]

using Revit MEP, have linked in architects model then copy / monitored the levels.
My levels are vastly different to the levels of the linked in model. i.e. link in model ground floor is 35620, my copy monitored level indicates 20880.
any suggestions at to what is happening here.
See attached file.
Peter

[Steve_Stafford]

Level's Elevation Base (Type Parameter) can be assigned to Project Base Point or Survey Point, if the elevation of the building has been set via shared coordinates in their model that would account for the difference. You can acquire coordinates to match your model to theirs and then change the Level's Elevation Base parameter to Survey Point.

[peet]

Thanks Steve, that provided the solution for me.
Peter