What is the maximum area of exterior wall openings for a building with a fire separation system of 10 to less than 15 ft that is unprotected and sprinklered?

In fire safety regulations for commercial buildings, the maximum area for exterior wall openings is influenced by factors such as the fire separation distance, the presence of sprinklers, and whether the openings are protected or unprotected. In this case, the building's fire separation distance is between 10 to less than 15 feet, and it is noted that the building is unprotected but equipped with a sprinkler system.

For a building that is sprinklered and has unprotected openings, the code typically allows for a greater percentage of wall openings compared to buildings that are not sprinklered, as the sprinklers can help mitigate the spread of fire. In accordance with applicable building codes and safety regulations, the maximum allowable area of unprotected wall openings in this context can be as high as 45%.

This percentage takes into account the enhanced safety measures provided by the sprinkler system, which helps to control potential fires before they spread out of the opening areas. Therefore, 45% is the correct answer, reflecting the balance between safety and practical design considerations in commercial building construction.