Type 1: Fire-Resistive, approved noncombustable, concrete encased steel, monolithic poured cement, steel spray on fire protection. Large multiple-story-hard to fight rely on no collapse.
Type 2: Noncombustible, less rating-steel not coated makes for collapse. Warehouses, small arenas, newer churches. Building do not burn but heat causes collapse.
Type 3: Ordinary, load bearing walls noncombustable masonry with wood floors, ceilings, structure members. Taxpayer, now strip malls. Spreaders-void spaces.
Type 4: Heavy Timber, masonary exterior walls with 8"" wood laminated beams for structure, floor, roof. Warehouses, older churches, manufactoring.
Type 5: Wood frame, new homes, small business, chain hotels built with wood.