Although the main parts of some fire-resistant buildings are made of refractory materials, they can be completely destroyed by flammable materials in the halls and other passages. These buildings may even be damaged by the collapse of metal beams and columns To severe structural damage. This passage mainly supports the argument that certain fire-resistant buildings:. ['May be severely damaged by fire.', 'Corridor and foyer with special structure.', ' : Protection of various facilities is not as good as ordinary buildings.', 'The loss caused by the fire is less than the loss caused by the collapse of the metal support.']