The term joisted masonry applies to building categorization and building codes. Buildings can be constructed in 1 of 6 different classes:
Frame
Non-combustible
Masonry non-combustible
Modified fire resistive
Fire resistive
Joisted masonry Underwriters use these classes to evaluate a property for potential risks. Joisted masonry burns at a slow rate, and is more fire resistant than framing with wood, but less fire resistant than the other building classes. Joisted masonry is often used to construct residencies, but not large-scale commercial properties, warehouses, or high-rise buildings. If wood framing is overlaid with a masonry-style veneer, it is still classified in the frame class.