A small sliding roof dome.
Its a unique dome concept in which the glass roofs can rotate or slide horizontally so that the different glass roofs can have different positions making the building very dynamic and adaptable in various scenes.

each roof part is of course a different objects, also the objects are watertight and clean geometry, and materials have been applied.

the FBX and OBJ formats have been tested and approved in 3D max as you can see in one of the screenshots.