Precast building refers to the building assembled on site with precast components produced by the factory.

Due to the lack of on-site sand mixing, pouring and other links, precast building is also more in line with the needs of urban environmental protection.

The market structure and newly added area of precast buildings are inclined to precast buildings in national policies, and relevant incentive policies are accelerated.

Due to the shortage of the number and quality of employed workers, the advantages of assembly efficiency cannot be fully revealed.

Since 18 years, various standards The technical requirements have been issued one after another, the content has more implementation level, and the industry development environment has been continuously improved and optimized.

In addition, the cost of grouting material is high, and the requirements for node waterproof construction are higher.

Improving the product landing efficiency is an urgent problem to be solved in the whole market..

According to the classification of structural forms, precast buildings can be divided into precast concrete structure, steel structure and wood structure, among which steel structure and wood structure are natural precast buildings.

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In 2025, precast buildings will account for 30% of new buildings.

In terms of management theory, precast decoration has many advantages over traditional decoration, but in the actual promotion process, there are many difficulties, such as the formulation of relevant supporting policies and standards, integrated design, users’ diversified needs, the application of integrated technology, project management innovation, the application of information technology means, the cost performance and market recognition of construction products Problems and constraints are prominent.

Shorten the construction period.

Lifting Clutches

Labor saving labor saving comes from two aspects: one is the reduction of unit labor hours caused by the shortening of construction period, and the other is the reduction of labor demand on the cast building site, mainly due to the reduction of concrete work caused by on-site pouring and carpentry caused by the significant reduction of wooden frame.

Whether it is the technical system or the production system, the cast decoration and traditional decoration are not of the same order of magnitude.

For villas or high-end apartments, the decoration cost is almost negligible compared with their purchase price.

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However, as a new production mode in the decoration field, at present, the enterprises engaged in assembly type pay more attention to product R & D and production, while at the landing end, a socialized employment system has not yet been formed.

Domestic precast decoration is limited by the development level.

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Due to the reduction of on-site pouring, the dust on the construction site is greatly reduced, and the consumption of water and electricity and the production of construction waste are also significantly reduced.

It was clearly proposed that precast buildings will account for more than 15% of new buildings in 2020, including more than 20% in key areas.

For ordinary commercial houses, the convenience brought by precast decoration, including the reduction of decoration time and the improvement of decoration quality, can certainly arouse the interest of these owners, but different from many foreign residents with high migration rate, like renting houses and low personalized demand for residential decoration, the housing ownership rate of Chinese residents is very high, In most cases, Chinese owners will live in the same home for a long time.

Under the current construction level, the advantage of construction speed is not obvious.

The product prices in line with the cast decoration are at a high level, resulting in the actual overall decoration cost being 50% higher than the traditional decoration.

At present, it is still in the embarrassing situation of “fast and cheap to say, slow and expensive to use”.

Among them, the key promotion areas led by Beijing Tianjin Hebei, Yangtze River Delta and Pearl River Delta all put forward development tasks far higher than the overall national goal.

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In addition, the precast decoration will generally add a five centimeter sandwich wall on the kitchen and bathroom to reduce the space area of the house.

2 advantages of precast building development precast building is the inevitable trend of building industrialization and intelligent development.

According to the overall estimation, the demand for on-site labor in precast buildings is reduced by about 30% (the transfer of precast man hours to precast factory is not considered).

The socialized employment system has not yet been formed.

The bottleneck of the development of precast buildings.

It is difficult to meet the personalized needs.

In response to the guidance on vigorously developing precast buildings issued by the State Council, the governments of all provinces, cities and autonomous regions have issued corresponding guidance to improve the top-level design of precast buildings in all regions and clarify the development objectives.

Precast concrete structure is the main structure assembled by precast concrete components through reliable connection, including fully assembled concrete structure, assembled integral concrete structure and so on.

High cost, long invisible construction period and low occupancy rate.

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Therefore, the owners of such houses are usually not interested in precast decoration.

The owners of this kind of houses have a personalized psychological demand for residential decoration, which far exceeds the requirements for decoration cost and decoration speed.

During the production of precast construction and formwork, the invisible construction period is lengthened.

The traditional cast-in-situ buildings wait until the main structure is completed before water and electricity is connected, while precast buildings install water and electricity at the same time of the main project, further saving the construction period.

For example, it is proposed that Beijing will strive to achieve more than 30% of new buildings by 2020, and Shanghai proposes that all qualified new buildings in the city during the 13th Five Year Plan period will adopt precast buildings in principle.

Compared with the traditional decoration, the dependence of assembly type on manpower has been reduced by 50%.

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In view of the inevitability of the trend of assembly industry, local governments in China have issued a number of incentive policies from top to bottom.

In March 2017, the action plan for precast buildings in the 13th five year plan and supporting management measures were issued to put the promotion of precast buildings into the actual action plan.

In addition, the high house price also makes the decoration cost of the house not difficult to accept compared with the house price, resulting in the pursuit of residential personalization exceeding the concern about the increase of decoration cost.

One major disadvantage of the precast decoration of residential buildings is that the standardized products provided in the precast decoration are difficult to meet the personalized needs of the owners.

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Another important feature of energy-saving and environment-friendly precast buildings is environmental protection.

Precast buildings shorten the overall construction period, which is mainly reflected in the shortening of the construction period of the main structure and internal and external decoration, especially the water and electricity installation.