What is the fire resistance duration for Type I construction?

Type I construction is characterized by its non-combustible materials and ability to withstand high temperatures for extended periods, providing structural integrity during a fire. The building elements, such as walls, floors, and roofs, are designed to resist fire for a duration that typically falls within the 3-4 hour range. This level of fire resistance is critical to ensure safety in taller buildings, as it allows for sufficient time for evacuation and fire suppression efforts.

The 3-4 hour rating for Type I construction also reflects its compliance with safety codes and standards, prioritizing both occupant safety and protecting the building's structural elements in the event of a fire. This classification is especially important in commercial and high-rise buildings where fire risks are significant and the potential for rapid fire spread necessitates a robust fire-resistant design.