What type of wall is characteristic of ordinary construction?

In the context of ordinary construction, a masonry outer wall is indeed a defining characteristic. Ordinary construction typically refers to a building method that incorporates non-combustible materials for the exterior walls, while using combustible materials for the roof and floors. Masonry, which includes brick, stone, or concrete, is heavily utilized in these types of structures because of its fire-resistance and durability.

Masonry outer walls serve to provide significant strength and stability, as well as enhance the fire protection of the building. They are essential in preventing the spread of fire from one building to another, making them a critical element in maintaining safety standards in ordinary construction.

On the other hand, while wood frame walls are common in residential buildings, they do not align with the typical definition of ordinary construction due to their combustibility. Steel frame and concrete block walls are often associated with other construction types or methods, such as heavy timber or non-combustible construction, thus their characteristics do not represent ordinary construction accurately.

Understanding these building materials and their classifications helps in assessing fire risks, safety protocols, and compliance with current building codes.