What is a characteristic of load-bearing masonry buildings?

Load-bearing masonry buildings are characterized by their very thick and heavy walls. This design is essential because the walls not only enclose the structure but also support the weight of the floors and roof. The thickness of these walls provides the necessary strength to bear loads, distinguishing them from other building types that might use lighter materials or separate structural frameworks. While buildings can vary in size and height, the fundamental property of load-bearing masonry remains the substantial wall thickness that provides both structural support and durability.

The other characteristics listed do not align with the defining features of load-bearing masonry. For instance, the use of lightweight materials and reinforced steel frameworks are more commonly associated with modern construction techniques and materials that prioritize efficiency and flexibility. Additionally, although load-bearing masonry can be used in single-story structures, limiting them to that configuration is incorrect since such buildings can also be designed with multiple stories while maintaining the load-bearing wall principle.