1. A developer is planning to construct a new multi-purpose hall that is expected to host various events, including conferences, exhibitions, and concerts. The hall is designed with an occupant load factor suitable for its intended uses, and it's anticipated to accommodate up to 800 people at maximum capacity. The layout includes several emergency exits strategically placed around the perimeter of the hall. Given the expected maximum occupant load of 800 people for the multi-purpose hall, how many emergency exits must the developer include in the design?