According to Brannigan, which type of construction is referred to as "Main Street USA"?

The term "Main Street USA" is commonly associated with Type III Ordinary construction due to its prevalent use in commercial buildings and residential structures found in small towns and urban settings across the United States. This construction type is characterized by masonry exteriors with wood framing inside, which allows for easy and economical construction.

Type III structures often feature a combination of non-combustible materials for the exterior while accommodating combustible materials in the interior. These characteristics make them a standard choice for many retail shops, restaurants, and multi-family dwellings that you might find on a typical Main Street. Understanding this context is key, as it highlights the architectural and fire behavior aspects associated with this construction type in everyday environments.

The other types of construction listed do not align as closely with the "Main Street USA" description. Type I is known for being fire-resistive, while Type II focuses on non-combustibility, neither of which captures the rustic and familiar feel of Main Street buildings. Type IV, on the other hand, refers to heavy timber construction, which is related but typically involves larger structural wood members and is often found in specific types of buildings, such as warehouses or older city structures.