However, at present, many design institutes still design according to the traditional ideas first, and then divide them into precast components.

At the same time, we will build a “1 + 3” standardized design and production system together with the size guidelines of three main components and parts, which will fully open up the links of precast housing design, production and engineering construction, promote the coordinated development of the whole industrial chain, gradually change the customized and small-scale production mode to standardization and socialization by clarifying the specific size of general parts, and comprehensively improve the industrialized production of new buildings Design and construction efficiency, and promote the precast housing industry to move towards standardization, scale and marketization.

Q: what is design selection? Answer: design and selection refers to the design method of comparing, selecting, optimizing and determining the technical system, parts and components and their interfaces based on the new construction system represented by assembly.

The standard is the first standardized design and selection standard for components of precast residential buildings in China.

It mainly includes three levels: design and selection at the four system levels, design and selection at the part and component level, and iterative optimization based on the relevant factors of production, construction and other construction links.

They lack the application of assembly architectural design concepts such as standardized design and system integration.

and national engineering survey and design master, interpreted the content of the standard.

On March 31, the Ministry of housing and urban rural development issued the industry standard “standard for design and type selection of precast houses”, No.

At the four system levels, it mainly selects the technical system and corresponding technology to complete the integrated design, and at the component level, it mainly selects the component parts and their interfaces.

The standard was officially implemented on April 1, 2022.

Yu Yinquan, the main drafter of the standard, chief engineer of China architectural standards design and Research Institute Co., Ltd.

The architectural design shall adopt the design method of module and module combination, follow the basic principle of module and module coordination, and effectively coordinate the architectural design and the standardization of parts and components from the front end.

Q: why should the standard be formulated? A: since the issuance of the guidance on vigorously developing precast buildings (No.

The “general principles”, the “general principles” and the “scope of application” of the terms are defined; The “basic provisions” have made in-depth provisions on the basic principles to be followed in design and selection, the main contents of design and selection, and the design of parts and interfaces; “Architectural design” gives the general principles of architectural design, puts forward the design method of module and module combination, and puts forward the coordination method of plane and facade standardization and diversified design; “Structural system”, “peripheral protection system”, “equipment and pipeline system” and “interior decoration system” clarify the specific selection principles of the system, performance indicators or parts from the perspective of the four systems of precast buildings and their characteristics.

Q: what design points should architecture major pay attention to when designing and selecting models? A: as a leading specialty, architects should first give full play to the leading role of design in the whole residential design and selection, and earnestly coordinate all specialties to realize design and selection from the technical planning stage.

71 document of the general office of the State Council in 2016), precast houses have been widely used in China, and relevant technologies have made great progress.

The formulation of the standard aims to lead the design units to implement standardized forward design, focus on solving the connection between the standardized design of precast buildings and the application of standardized components and parts, provide strong technical guidance for designers, and promote the design method of “less specifications and more combinations”.

It mainly solves the problems related to the connection between standardized components and front-end design from the perspective of positive system integration design, and effectively combines architectural design with the selection of components through the integrated design of four systems: structure, peripheral protection, interior decoration, equipment and pipeline through standardized components.

There are a large number of non-standard size parts and interfaces in the actual project, which has greatly affected the production and construction efficiency.

At the same time, the plane design should adopt the layout of large space, and the facade design should realize diversification through facade materials or colors on the basis of standardization.

▌ the original text is as follows: ▌ policy interpretation: strengthen design guidance and promote the concept of standardization in the whole process – the standard for design and selection of precast houses is interpreted as implementing the decision and deployment of the CPC Central Committee and the State Council on vigorously developing precast buildings, and running the concept of standardization through the whole process of design, production, construction, decoration, operation and maintenance of precast buildings, The standard and quota Department of the Ministry of housing and urban rural development focuses on building a “1 + 3” standardized design and production system, that is, preparing an industry standard, the standard for design and selection of precast houses (hereinafter referred to as the standard) 3 dimensional guidelines for main components and parts (dimensional guidelines for main components of steel structure residence, dimensional guidelines for main components of precast concrete structure residence and dimensional guidelines for main components of precast decoration of residence).

The problem of standardization has become an obstacle to the development of assembly architecture, It is urgent to guide designers at the design concept level.

The design and type selection shall be led by the architecture discipline, in coordination with the relevant disciplines such as structure, electromechanical and interior decoration, take the overall project as the object, comprehensively consider the internal and external constraints, and gradually complete the design of precast residence from shallow to deep through the selection of technical system and parts.

Q: what are the main contents of the standard? A: the standard is divided into eight chapters.

For areas where equipment pipelines and parts such as toilets, kitchens and public pipeline wells are concentrated, the size of these functional spaces shall be determined first..

The standard is applicable to the residential design of precast concrete structure and precast steel structure.

Wire Ring Clutch

JGJ / t494-2022, which will be implemented from April 1, 2022.