Beam system of metal ceiling with columns and lighting

In the archive the file max 2014 assembled system and separately the system elements
Fbx format exported only individual elements
1. Ceiling from the profiled sheet with rivets.
2. Beams and spans of crossbar.
3. Two types of columns.
4. Ceiling stiffeners.
5. Suspension lamp.
6. Welding seams at the docking points.