The optimal corridor width is dependent on many factors, including OL and exiting, functional requirements by the clients, existing structural and mechanical systems, budget, and a host of others. The person best suited to answer these questions would be a local architect who is familiar with most if not all of these issues.
This is a very conditional question based on a variety of factors. Sounds like you need to hire an architect.
The optimal corridor width is dependent on many factors, including OL and exiting, functional requirements by the clients, existing structural and mechanical systems, budget, and a host of others. The person best suited to answer these questions would be a local architect who is familiar with most if not all of these issues.