Industrial Stairwell Plans for Commercial Building

I need detailed plans for an interior stairwell in an existing commercial building. I have initial architect designs of the stairwell, but no finished plans. Also the plans i have had inc. a new balcony which we are no longer doing, so the occupancy needs to be reduced. Also, the interior layout is slightly different than he had proposed, so that changed the interior dining space. I have the updated version created for your reference. The primary purpose of this stairwell is to increase occupancy into the 2nd floor of the building. It is essential that the plans include considerations for occupancy and egress requirements.

Key Requirements:
- The design must comply with all relevant safety and building codes.
- Plans should enhance the industrial aesthetic of the building.

Ideal skills and experience:
- Expertise in commercial building design
- Knowledge of safety and occupancy regulations
- Strong background in industrial design elements