Stairway Cut-Out Drawing for Approval

I need a professional drawing of a stairway cut out through TGI's for construction approval in Westmont, Illinois.

Requirements:
- Specific dimensions
- Material details
- Load-bearing capacity
- Final drawing in PDF format

Ideal Skills and Experience:
- Proficiency in structural engineering and architectural design
- Experience with construction approval drawings
- Familiarity with Westmont, IL building codes and regulations
- Detail-oriented with strong technical drawing skills