Which statement is true regarding fire walls?

The statement regarding fire walls that is true is that masonry is commonly used due to its noncombustible quality. Fire walls are specifically designed to resist the spread of fire and must meet certain building code requirements for fire resistance ratings. Masonry materials, such as brick and concrete block, are inherently noncombustible, making them suitable for creating barriers that can withstand high temperatures and limit the passage of flames and heat between different areas of a structure. This characteristic is critical in maintaining safety during a fire event.

Utilizing noncombustible materials like masonry ensures that fire walls can effectively perform their role in protecting adjacent spaces from fire spread, thereby enhancing the overall fire safety of the building. The ability of masonry to withstand heat and prevent ignition is why it is the preferred choice for constructing fire walls in many building designs.