3D Model: Create A 3D Model Of An Industrial Warehouse Racking System Without Any Pallets. The Structure Should Include 4 Vertical Columns In Depth And 3 Vertical Levels In Height, With Horizontal Support Beams Connecting Each Column. Add Diagonal Cross-bracing For Structural Support. The Frame Should Be Composed Of Steel And Have A Modular, Symmetrical Grid Design. Do Not Include Any Shelving Panels Or Pallets. Make Sure The Beams Have Industrial Bolt Connections And Show Realistic Proportions.