Obvious advantages steel housing suitable conditions and broad development prospects

What is the housing industry? Housing industry is the use of industrialized way residential construction, including the "four modernizations": residential design standardized parts production factory, on-site assembly of construction, construction decoration integration. Its core is a PC (prefabricated) model, is the main building in the factory production and processing components, through the means of transport transported to the construction site, assembled into a variety of architectural forms. stone coated metal roofing tile
Data show that the main structure of the domestic residential construction industry means less than 1%, has built or under construction residential building industry PC rate is generally 10% to 20%, related to construction parts and related products less than 2000 kinds. Countries in 1999 had introduced on promoting modernization of housing industry, a number of observations to improve housing quality, clear requirements "to promote residential building materials, parts intensive, standardized production, accelerate the development of the housing industry." stone coated metal roofing tile Ministry of Housing has repeatedly issued a document on the housing industry. Unfortunately, the housing industry in China's development has been tepid, but added showing a "thousand flowers bloom" development trend, both steel housing industry, there are also transferred with precast concrete industry, and even wooden structure housing industry ......
So, China's housing industry in the end what choice should do it?
Discard wooden structure to adapt to China's national conditions
From a technical perspective, prefabricated wooden structure meets the characteristics of, and have less pollution, low emissions characteristics. stone coated metal roofing tile However, the use of functions in the building, wood structure is more suitable for low-rise residential buildings and villas, and even can not build high-rise. China currently is steadily promote urbanization, high-rise and even become the next high-level should be a very long time the mainstream of urban construction, should not have much wood structure comes into play. Purely from this perspective, the wooden structure has been eliminated. stone coated metal roofing tile
Also note that, as a wooden structure one of the most popular regions - North America, neither the U.S. nor Canada, all belong to sparsely populated (relative to the Chinese speaking), and the forest is rich in resources, especially suitable as wood Structure of raw materials tall trees. By contrast, in 2008 China 195 million hectares of forest area, forest coverage rate reached 20.36%, while the country's development goal is to strive to 2015 forest coverage rate reached 21.66%. stone coated metal roofing tile
Cost high pollution
Inhibition of precast concrete
Production and application of precast nearly 60 years of history, 20 mid-1980s, tens of thousands of urban and rural areas of different sizes precast factory, our component industry reached a peak. In this stage, the main types of preform are the following: civil member has wall panels, prestressed building board, prestressed hole plate, precast concrete balcony; industrial building components are crane beams, prefabricated columns, prestressed roof , roof, roof beams. stone coated metal roofing tile
Currently, there are two major factors in the "Forced" domestic housing industrialization process. First, the environmental pressure. China's "construction industry" second five "plan" requires the construction process of building products to increase the value of the unit energy consumption decreased by 10%, the new construction project should be consistent with national building energy efficiency standards; Second, cost pressures. Industry data show that labor costs account for the proportion of residential construction cost from 10 years ago, 16% to 17% to the current 30 percent, construction companies must be reduced to simple labor dependency. stone coated metal roofing tile
Cost is that many enterprises are facing the threshold. If using in-situ operations, the cost per cubic meter of concrete between 1200 to 1500 yuan; such as the purchase prefabricated lifting, the cost per cubic meter of concrete may be more than 4500 yuan. stone coated metal roofing tile If the PC rate is less than 30%, the cost per square meter of residential buildings added around $ 300; while if it exceeds 60%, the cost per square meter add more than $ 600. Residential current PC market share is small, can not reflect the scale of production, coupled with in-situ mode, an increase of component production processes and 17% VAT, the product can only maintain a high price. At the same time, China's cement production superpower, the relevant environmental protection department statistics show that dust emissions in cement industry accounted for 30% of total industrial emissions. Reduce the use of cement, cement alternatives must find the same time, this is the new requirements of the construction industry. stone coated metal roofing tile
Obvious advantages steel housing
Development prospects
Steel housing with seven advantages.
Steel structure, light weight, about ordinary reinforced concrete structures 1/3 to 1/2, can reduce the destructive earthquake, lowering both basal and ground handling fees. stone coated metal roofing tile
Good toughness steel, steel has a good seismic performance. Taiwan 9.21 Earthquake damage investigation indicated that the reinforced concrete buildings destroyed was 52.5%, 24.1% masonry structure, while the steel is only 0.6%;
Steel is one of the most industrialized production methods meet the structural form, the most easy to implement standardization of design, components and parts production factory, the socialization of product supply, construction and assembly of mechanization, market consumption series; stone coated metal roofing tile
Steel design flexibility for a wide range, and the member section is small, can improve the efficient use of building space;
Steel can dry construction, water conservation, low labor costs, short construction period, the construction footprint, generated noise, less dust, the construction process small adverse effects on the environment; stone coated metal roofing tile
Use steel can significantly reduce the use of concrete and brick are used, reducing the amount of mountains to dig rock and soil, are environmentally friendly. For the same size of the building, with steel reinforced concrete structures than the CO2 emissions can be reduced by 1/3; stone coated metal roofing tile
Steel alterations and demolition easy removal of the structure of solid waste generated less material recovery and recycling rate is high. stone coated metal roofing tile
Insiders called for, should create a sound policy and institutional system, foster prefabricated housing industry chain. On the one hand, to architectural design, parts manufacturing, construction, installation and commissioning, maintenance and other aspects of the housing industry to establish "rules of the game." On the other hand, will also accelerate the introduction of research planning, land, finance, tax, financial and other aspects of incentive policies, and gradually guide more enterprises to enter the market, the housing industry, the formation of sustainable market operation mechanism.

by stone coated metal roofing tile