For which type of construction is a fire retardant treated wood typically required?

Fire retardant treated wood is typically required in various types of construction, including residential, industrial, and commercial buildings. The use of fire retardant treated wood is primarily aimed at enhancing fire safety by reducing the flammability of wood materials. This is particularly important in situations where there is a higher risk of fire or where building codes mandate additional fire protection measures.

In residential construction, certain areas such as eaves, soffits, and decking may require the use of fire retardant treated wood, especially in regions where fire safety is a significant concern. Industrial buildings often have stringent fire codes due to the types of materials stored or processes used within them, making fire retardant treated wood a necessary consideration. Similarly, many commercial buildings, especially those that are multi-story or have a high occupancy load, are subject to codes that require fire retardant treatments.

This requirement is driven by the need to protect not only the structure but also the lives of the occupants and first responders in the event of a fire. Therefore, it is understood that fire retardant treated wood is applicable across various construction types, making "all of the above" the correct answer.