Although the main parts of some fire-resistant buildings are made of refractory materials, they can be spread or even completely destroyed by flammable materials in the halls and other passages. These buildings may even collapse due to metal beams and columns And suffered severe structural damage. This passage mainly supports the argument that certain fire-resistant buildings:. ['Fire damage is less than damage caused by metal support collapse.', 'May be severely damaged by fire.', 'Foyer and corridor passages spread fire.', 'The protection of various facilities in the building is not as good as the general building.']