Provinces and cities across the country have introduced policies and measures for the development of precast buildings and put forward corresponding objectives for the development of precast buildings.

Precast buildings have six characteristics, including standardized design, industrialized production, integrated decoration of precast construction, information management and intelligent application.

See the table below for details.

In a sense, the cost of precast buildings affects the development of dressed and matched buildings to a certain extent.

△ the classification of precast buildings can be seen from the above table that in order to reach the grade A or above of precast buildings, the assembly rate should reach more than 60%.

It can be seen that the development of precast buildings will gradually develop towards high assembly rate and high degree of standardization.

However, the precast buildings in most areas are concentrated in the development state of low assembly rate and low degree of standardization.

The full text is as follows: Analysis on the construction cost of high assembly rate based on the national standard evaluation standard for precast buildings yuanchunlin, Yi Li, Zhang tingxue, Wang Yixuan, Zheng Yanwei Abstract: precast buildings are of great significance for saving resources and energy, reducing pollution, improving labor production efficiency, improving project quality and promoting building industrialization.

This paper also won the first prize of the 2021 project cost paper of Chengdu Engineering Cost Association.

The newly built precast building area in 2019 increased by 45% over 2018, with an average annual growth rate of 55% in recent four years.” According to the above report, the development of precast buildings in China has shown a rapid development speed.

Then, what is the concept of the cost of precast buildings with high assembly rate? This is an issue concerned by all parties involved in engineering construction.

△ the development goals of precast buildings in various provinces and cities according to the 2019 National Development Report on precast buildings: “according to statistics, 420million square meters of newly built precast buildings were built in 2019, an increase of 45% over 2018, accounting for about 13.4% of the newly built building area.

However, there are still some problems in the development of precast buildings, such as the low degree of standardization of precast buildings and the low assembly rate of precast buildings.

While continuously improving the core competitiveness of the enterprise, CSCEC consulting also promotes the high-quality development of the engineering consulting industry.

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In particular, in recent years, various regions have successively issued precast building development policies, which has effectively promoted the development of precast buildings.

It is against this background that in 2018, the Ministry of housing and urban rural development issued the national standard “evaluation standard for precast buildings”, which sets the evaluation items from the three major dimensions of main structure, enclosure wall and internal partition wall, decoration and equipment pipeline.

Through the cost analysis of a small high-rise precast house with high assembly rate, this paper intends to make all parties involved in the construction have a clear understanding of the cost of the precast building with high assembly rate, so as to enhance confidence for the further development of the precast building..

At the same time, the application proportion of precast components in the vertical components of the main structure should not be less than 35%.

Under the new situation, CSCEC consulting adheres to scientific response, leads practice with the new development concept, focuses on technological innovation, continues to focus on professional improvement, gives full play to its own technological and talent advantages, solidly promotes various excellence creating scientific research work, and has achieved a series of fruitful results.

At the same time, due to the different evaluation standards of precast buildings in different regions, in the practice of precast building engineering, the construction subject prefers to build the parts with low building technology according to the requirements of precast buildings, resulting in the uneven development level of the four systems of precast building structure system, enclosure system, equipment and pipeline system and decoration system; The assembly scheme of precast buildings is mainly horizontal structure and internal partition wall, and the assembly rate has been maintained at a low level of less than 30%.

Therefore, in order to promote the development of precast buildings, it is necessary to further improve the assembly rate, improve the standardization of precast buildings, enhance the scale efficiency of precast buildings, and reduce costs, so as to promote the further development of precast buildings.

The evaluation standard for precast buildings requires that the application proportion of precast components in the vertical components of the main structure should not be less than 35%.

Key words: national standard evaluation standard; High assembly rate; Cost introduction precast building refers to the building assembled by precast components on the construction site, including precast concrete building, precast steel structure building and precast wood structure building.

Their development is of great significance for saving resources and energy, reducing pollution, improving labor production efficiency, improving project quality and promoting construction industrialization.

In September 2016, the general office of the State Council issued the guiding opinions on vigorously developing precast buildings, The formal logo dress matching architecture has risen to the national strategic level, and all provinces and cities across the country have also launched corresponding policy measures and development goals for the development of precast buildings.

The classification of evaluation grades for precast buildings is shown in the table below.

This paper intends to analyze the cost of a precast house with high assembly rate, interpret the influence of the assembly scheme and the assembly decoration of the precast building on the cost of the precast building, so as to provide support for the construction parties to have a deep understanding of the cost of the precast building with high assembly rate and provide support for the decision-making of the precast building, so as to lay a good foundation for the further development of the precast building with high assembly rate.

One of the achievements of CSCEC consulting professional papers – “analysis of high assembly rate building cost based on the national standard evaluation standard for precast buildings” provides support for the construction parties to have a deep understanding of the cost of high assembly rate precast buildings and to make decisions on precast construction.

In September, 2016, the general office of the State Council issued the guidance on vigorously developing precast buildings, which officially marked that the dressed and equipped buildings have risen to the national strategic level.