What describes the construction using heavy timber framing within noncombustible-masonry?

The construction that utilizes heavy timber framing within noncombustible masonry is specifically described as Type IV Heavy Timber. This construction type is characterized by structural elements made of heavy timber, which is defined by its large dimensions and significant resistance to fire. The heavy timber elements include beams, columns, and floors, which, due to their mass, develop a char layer when exposed to fire, helping to protect the underlying material for a longer duration.

The noncombustible masonry surrounds or encloses this heavy timber framework, providing added fire resistance while still allowing for the advantages of heavy timber construction. This type of assembly is commonly preferred for certain types of buildings, such as educational facilities or commercial structures, as it balances fire safety with the aesthetic and structural benefits of timber.

The other construction types listed focus on different materials and configurations, which do not specifically involve this combination of heavy timber and masonry, thereby distinguishing Type IV Heavy Timber as the correct answer for this question.