Galvanized Steel Fixed Stairs Design

I need a complete Autodesk Inventor model for a set of industrial fixed stairs. The structure must be steel and detailed for a hot-dip galvanized finish, so all edges, welds, and drainage holes should be considered in the design.

The stairs will serve permanent access in a plant setting, so they must comply with Australian Standards. The layout will be similar to a step ladder: https://www.stepform.com.au/as1657-2018/step-ladders.html. It will include stringers, treads, and handrails. These stairs will be fixed to a platform, but I will do that on my end.
The total height of the stairs will be 730mm, width will be 450mm.
Handrails must comply with https://www.stepform.com.au/as1657-2018/handrail-guardrail.html

Make this model editable to change height, width, number of steps, and handrails. Preferably through iLogic.

Please provide:

• Inventor assembly and part files (.iam, .ipt)
• Fabrication drawings with dimensions, hole schedules, and weld symbols
• A simple BOM that lists member sizes and quantities

I will review the native Inventor files for fit, clearances, and weight before sign-off. Let me know your expected turnaround and any clarifications you need.