Design Modular Steel Construction Weights

I need a set of heavy-duty, high-capacity weights purposely engineered for industrial use on construction sites. They must be fully modular so crews can combine or separate units quickly on location, allowing a broad range of load requirements without keeping dozens of different blocks in inventory.

Key points to keep in mind
• Environment: rough outdoor construction settings with cranes, forklifts and frequent relocation.
• Material: steel only—chosen for durability, predictable density, and straightforward inspection.
• Capacity: target loads will range well above standard gym plates, so every module, connector and lock must show reliable factors of safety that satisfy current construction regulations.

I’m looking for a complete engineering package: 3-D CAD models, detail and assembly drawings, clear load charts, and brief calculation notes (FEA or hand-calcs) that justify the ratings. If you already work with SolidWorks, Inventor or similar mainstream software your files will drop straight into our existing library.

Acceptance criteria
1. Each module links securely to the next without special tools and cannot detach under rated use.
2. Documentation proves compliance with common structural steel codes (e.g., ASME or Eurocode—advise which you follow).
3. Final files: native CAD, neutral STEP, and PDF drawings with tolerances, welding symbols and bill of materials.

If you have prior experience designing counterweights, crane ballast or similar steel assemblies, I’d love to see a sample screenshot or brief description of a past project when you message.