What is a main characteristic of ordinary construction?

In the context of ordinary construction, the characteristic that best represents this type of building construction is a trussed roof design. Ordinary construction typically refers to a type of building style commonly found in residential and low-rise commercial structures, which often makes use of conventional framing methods.

The trussed roof design is significant because it involves the use of triangular frameworks, which help distribute the weight of the roof evenly across the structure. This design allows for greater spans without the need for intermediate supports, making it both an efficient and cost-effective choice for buildings. Additionally, trussed roofs are often made with materials like wood or steel, aligning with the practices seen in ordinary construction where such materials are prevalent, adding to the building's overall structural integrity.

Other choices, although they pertain to construction materials and methods, do not encapsulate the defining feature of ordinary construction as effectively. For instance, a steel frame structure is more indicative of non-combustible construction and is less common in the context of ordinary construction, which may not typically use steel as the primary framing material. Concrete block walls also belong to a different category of construction, often related to walls and foundations rather than the roof structure itself. Similarly, metal siding might be used in various constructions but does not