What characterizes Type I building construction?

Type I building construction is characterized by its use of reinforced concrete and non-combustible materials. This construction type is designed to provide maximum fire resistance, making it suitable for high-rise buildings and structures that require stringent safety measures. The non-combustible nature of the materials used in Type I construction helps to prevent the spread of fire, which is critical in urban areas where buildings are in close proximity to one another.

In contrast to this type, other materials such as wood are associated with less fire-resistant construction types, and mixed construction or limitations to a single story do not define Type I structures. The emphasis on reinforced concrete and non-combustible materials is what primarily differentiates this classification in building codes and fire safety regulations.