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This post was last edited by tianyewei on 2012-12-5 at 14:35. Traditional construction methods in our country rely mainly on manual, wet-work techniques, which present various problems in use. With the advent of steel structures, lightweight steel structure residences have solved these issues. Such residential structures not only provide users with a more comfortable and safe living environment but also play an important and positive role in improving the quality of housing construction and promoting its industrialization. According to available information, the United States was one of the first countries and regions to use steel frame structures for building residences. Considering factors such as cost-effectiveness, safety (seismic and fire resistance), and durability, more and more housing developers are turning to light steel structure residences, leading to rapid development in this area. In 1965, lightweight steel structure homes accounted for only 15% of the building market in the United States; this figure rose to 53% in 1990, to 68% in 1993, and reached 75% by the year 2000. Although national conditions vary, it is evident that lightweight steel structure homes have become the future direction for residential development. Before the issuance of the Technical Specifications for Light Steel Structure Residential Buildings, with the rapid development of the national economy, there was an increasing demand for high-quality housing that was safe, comfortable, healthy, and environmentally friendly. Light steel structure residential buildings met these requirements for an ideal home. Meanwhile, **housing industry policies have always been oriented toward energy conservation and industrialization. Against this backdrop, **the relevant ministries have successively introduced a series of industrial support policies to promote the development of lightweight steel structure residences. This also indicates the development trend of lightweight steel structure housing in my country. Among the many building structures in our country, with the occurrence of natural disasters, many people have begun to ask a question? Which types of buildings have better seismic resistance? What is the seismic performance of more and more high-rise buildings? Classified by seismic resistance level from low to high, there are several categories: rural dwellings with civil engineering structures have the worst seismic resistance – 90% of them collapsed during the Wenchuan earthquake; next are multi-story brick-concrete structures, typically 6 to 10 stories high, as they use a large amount of bricks and are brittle in nature; third are base-frame structures, where the ground floor is frame-based and used as commercial spaces facing the street, with large openings, while the floors above the second floor are made of brick-concrete material. Due to the difference in stiffness between these two materials, such structures tend to collapse easily in an earthquake because the lower part is heavier. Frame structures are relatively robust and resistant to earthquakes, and they are commonly found in buildings with 10 or more floors; frame-shear wall structures are better, while pure shear wall structures are even better. Another type that is extremely durable is the steel structure, which is often used in buildings such as shopping malls and passenger stations. It is also widely used in countries like Japan; it has good flexibility and can absorb forces, but its cost is very high. At present, high-rise buildings with 30 floors or more are mostly of the frame-shear wall structure; such buildings did not suffer any damage in the Wenchuan earthquake, and their performance is excellent. It is said that shear walls are concrete structures with high stiffness; they can withstand strong horizontal forces and are therefore more durable. So don’t focus on the height of the building; what’s important is its structural design.