What type of construction would utilize mass timber materials?

Mass timber materials are primarily utilized in Type IV construction, often referred to as "Heavy Timber" construction. This construction type is characterized by the use of solid wood elements that are large and heavy, allowing for the aesthetic appeal of timber while also providing sufficient fire resistance.

Type IV construction specifically allows for the use of exposed heavy timber elements and limits the use of other materials, creating a distinctive architectural style. The thick wood components provide natural fire resistance due to the charring of the timber, which helps to protect the inner sections from burning.

While other types of construction may utilize wood in various forms, they typically do not focus on mass timber as the primary structural element. For instance, Types I, II, and V involve different construction materials or methods, such as non-combustible materials or light frame construction, which are not characteristic of mass timber principles.