This article shows what data is needed to send or move your project data.
The CAD model geometry of each project is saved as a DGN file.
However if sending/copying the entire project then the encompassing Workset folder is required, as this contains the data files associated with the project, such as Weather locations and Construction types. Additionally the related CFG and DGNWS files are needed. To do so:
Following this, if you have be received Workset files and wish to open them on your machine:
For more guidance on Workspace and Workset folder structure see this article.