Identify the appropriate application of codes for commercial, industrial, and mixed occupancies for existing, historical and new structures (educational & large assembly facilities, research laboratories, hospitals, hazardous buildings, underground buildings, high-rise buildings, experimental structures and stadiums). Identify the appropriate application of codes for commercial, industrial, and mixed occupancies for existing, historical and new structures (educational & large assembly facilities, research laboratories, hospitals, hazardous buildings, underground buildings, high-rise buildings, and stadiums).