What is the fire rating requirement for exterior walls of a Type II-B building with S-1 occupancy?

The fire rating requirement for exterior walls of a Type II-B building with S-1 occupancy is indeed determined by the distance from the property line. In this case, option B states that there is a 0-hour rating for walls that are greater than 10 feet and less than 30 feet from the property line. This is consistent with the building code provisions, which allow for a lack of fire rating in certain scenarios based on the separation distances.

In the context of a Type II-B construction, which is typically deemed non-combustible, the code takes into consideration the occupancy type and its associated risks. For S-1 occupancies, which include storage facilities for non-combustible materials, the fire rating may not be as stringent within specific distances from the property line, as long as those distances are met.

This understanding aligns with safety protocols aimed at reducing fire hazards to adjacent properties, and illustrates the importance of evaluating both the type of construction and its proximity to property lines when establishing fire ratings.