The following questions you have doubts? Let's look at the analysis and elaboration of experts. "What kind of industrialized residential housing?" "How to evaluate and calculate the degree of industrialization?" "Different ways to calculate how companies will bring a different result?" "Precast concrete structures in steel prices and who is the focus?" "The pursuit of prefabricated rate housing industry will become a misunderstanding?" ...... Shenzhen recently opened six pilot projects housing industry, a key step in the housing industry practice, and has suffered many of the above problems confusion. In Shenzhen, the housing industry recently held a pilot project review meeting the technical requirements of experts, more than well-known experts on these industry hot topics, expand the professional discussion. Steel VS precast concrete structure housing industrialization is not the equivalent of precast concrete structures (PC)? Currently many emerging PC components plant construction tide, gradually introduced the relevant policies and regulations, the establishment of pilot demonstration projects continue, it seems that all the objective to the people, "deepen" the impression. At the same time, the level of steel technology already developed in recent years, the price of steel is continuing to fall, the net profit of a ton of steel from several thousand years ago, nearly half of this year fell to the lowest point of 0.43 yuan, the industry ridicule "even buy a Popsicle enough ", but" vigorously promote the steel structure housing "has also been sounded. PC or steel, are sparked heated debate. Chenzhen Ji: We are now taking the road to industrialization, and the assembly of the mentioned and did not jump out of the framework of a few decades ago, in fact, we should talk more about the structure of the system, such as steel and so on. Implementation of prefab premise that mass production, a large number of applications, workers, market, technology and government policy should be to keep up. The implementation of residential buildings in prefab patterns encountered many embarrassing situation, leading to general developers terrified, afraid to test the water, which is justifiable in a free market economy. However, in addition to PC, using the tools of mass production style template, ready-mixed concrete pouring into the house scene components and other industrialized count? Many urban construction sites two, three high "temporary building", complete with factory production assembled from standard plate count as industrialization? There are wall version, floors, roofs are on the factory-made light steel housing system? 2003 Beijing to fight against SARS, seven days and seven nights to catch built Xiaotangshan Hospital , known as "medical miracle in the history of the world", is the use of prefabricated components factory, not the PC, if that is not industrialized? ...... research over 50 years I have engaged in concrete structures, now increasingly into question, the building is not on industrialization equivalent to the prefab concrete, this is the only way to not building industrialization in China, should not we be open-minded, seeking more to adapt to the conditions around the road to industrialization Ma Tao:?? I think, in the history of industrialization, due to various reasons , there are some inevitable problems, but at this stage advocated "a new building industrialization" should be based on the original intention of solving quality problems occurring in the last round of industrialization, and to apply to fewer and fewer workers, employment characteristics no longer is a people-oriented, but in quality, standards, to control industrial machinery. Contrast, the steel has long been industrialized, and there are many cases to analyze, although there is still fire, building envelope, maintenance and other issues, but at this stage seems to be no longer in a big way to promote. As housing industrialization are not exactly equal, like industrialization, industrialization assembly of completely not equal, but in reality the process, through the rational path to change the existing problem, obtain market-oriented organizational model construction, obtain appropriate precision products, or The main significance of this stage and the target. Under this goal, all the problems attributed to a design and construction personnel greatly improve the overall level of need, the need for transformation with the concept of industrialization. Fan Hua: PC, steel, concrete composite steel formwork system, the template set molds, should be included in the scope of industrialization. As for the steel and PC who goes first question, I think the two can be combined to develop, but the most important question really is market demand. Shanghai Modern Group, responsible person propose the concept of "socialization" in a meeting recently held in Shanghai on the proposed market-oriented product should only be accepted by the market, companies will have an incentive to create a market unless the government at a higher level come out. If the PC is now required to promote the protection of the room, it shows that this product needs to occur at this stage, which is in line with demand. Gu Ming Wang: 2008 had a variety of architecture and enterprise technology roadmap done a special study, the results showed that the steel - concrete composite, must be the future trend can not be avoided. Fabricated structural system should contain more, according to the needs of different situations, with different structures adaptation. Chenzhen Ji: Any technology should not be "single-track driving", you should use a broader idea of ??examining and evaluating building industrialization, be tolerant to diversity by building attitude towards industrialization, treat technological innovation. VS prefabricated assembly rate ratio comparing the route of the dispute, the more important question is, what criteria should be used to evaluate and calculate the industrialization? This will have a direct impact on the market and the vital interests of the enterprise. 2011 issued in Shanghai "on the city to encourage the construction of prefabricated housing project Interim Measures" will be clearly defined, only prefabricated rate of more than 15% of prefabricated housing in order to meet the conditions relating to the area to enjoy the exemption building concessions. In reality industrialization project, but also commonly used as a promotional rate data precast highlights. The concept of prefabricated rate, seems to have become common indicators for housing industrialization, however, the rate of pre-quest, but also repeatedly challenged, and even considered to be "the housing industry a big misunderstanding." Cen-rock: now there are three kinds of housing industrialization calculated volume ratio, area ratio, value ratio, due to the value of more than easily lead to artificially enhance the value, so before the current use of both terms, respectively, and the corresponding rate is prefabricated The concept of assembly rate. Assembly rate refers to specific parts of the building using the percentage of the area of ??all the concrete precast concrete accounts, or the component parts of the exempt area using the area of ??the template and the template assembled a large percentage of the surface area of ??all members; and prefabricated rate refers to a particular building using prefabricated concrete parts volume percentage of total volume of concrete. Is to calculate the area ratio or volume ratio, the outcome will be very different. Gu Ming Wang: We have a solid floor and through a set of composite floor were estimated by fitting the rate calculation, the same data, but according to pre-rate calculation, laminated floor prefabricated in the factory because of half and half require on-site cast concrete volume data than a solid floor less than half. This has created a new problem, why advanced technology, according to pre-rate count backward instead, technological progress, but on the data "lose" the development of concrete structures should be in three directions:? Precast technology, in-situ techniques (industrialized formwork system ), free template-free form removal techniques. From this perspective, simply focus on the pre-rate but is a misunderstanding. The concept of the assembly rate includes free templates or use templates and more industrialized consider more reasonable. More scientific approach is to set different weights for different means of re-industrialization be counted. Ma Tao: In fact, from this point of view, as long as the technology should be able to remove the template industrialized products, including free templates free support, an important part of a combination of templates, industry templates, industrialized construction process is new construction industrialization. Thus, in the assembled low rate case, mention prefabricated rate is meaningless. Fan Hua: If the blind pursuit of prefabricated rate, components may become heavy, to the production, transportation, installation unnecessary burden. Similar cases common. So, what can be used as evaluation criteria industrialization? In foreign countries have a "reasonable hours" indicator, a project from start to finish, artificial Jian in proportion, this is definitely an indicator of the degree of industrialization, but at present our country to still too early to say. Cen rock: only technological progress, in order to reduce labor ratio, which is the ratio of the volume ratio, area ratio are higher-level requirements. 

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