News From China|For Prefabricated Buildings, These Two Guidelines Are Released!
Sep 23, 2021| In order to implement the “Guiding Opinions on Vigorously Developing Prefabricated Buildings” by the General Office of the State Council and construct a standardized design and production system for prefabricated buildings, the Ministry of Housing and Urban-Rural Development organized the compilation of the “Guidelines for the Dimensions of Main Components of Prefabricated Concrete Structure Residential Buildings” and “Residential Assembly Design”. "Guidelines for the Dimensions of Main Fitting Parts" is now being released.
"Guide for the Dimensions of Main Components of Prefabricated Concrete Structure Residential Buildings"
This guide is formulated for the purpose of promoting the industrial construction of prefabricated concrete structure residential buildings, improving the standard application level of precast concrete components, improving production and construction efficiency, and saving project construction costs.
The components in this guide are applicable to prefabricated concrete structure residences, which can be selected according to the following table.
Component type | Applicability | Main product/design parameter categories | Remark | |
Slab stairs | Straight stairs | Double run stairs | Storey height.span.width Step size.Railing Handrail.Partition wall load.Appearance. External wall insulation.Installation parameters | Stereotyped products |
Scissors stairs | ||||
Folded board stairs | Double run stairs | parametric design | ||
Floor | Precast concrete floor | Assemble the monolithic floor. Prefabricated floor | Span.Width.Thickness. Load.Board Bottom. Appearance. Joints.Reserved Holes | parametric design |
Truss steel prefabricated base plate | ||||
Prestressed prefabricated floor | ||||
Air conditioning board | Cantilever board | Floor part | Overhang Span Width Load Appearance | Stereotyped products |
Balcony board | Slab cantilevered balcony | Stacked balcony | Overhang Span Width Load Appearance | parametric design |
Prefabricated balcony | ||||
column | Precast column | Frame Frame-Shear Wall | Floor height Grid size Sectional size Appearance | parametric design |
Beam | Composite beam | Frame Frame-Shear Wall | Grid size Length Section size Load Appearance | parametric design |
Shear wall panels | Exterior wall panels | Solid wall panel Wall panel with door opening Wall panel with window | Floor height Floor slab and floor method Opening size, number and height Connection form Appearance | parametric design |
Interior wall panels | Solid wall panel Wall panel with door opening Wall panel with window | |||
This guide is applicable to the assembly decoration of new and existing residential buildings. The main contents include fabricated partition and wall systems, fabricated floor systems, fabricated roof systems, doors and windows, integrated kitchens, fabricated bathrooms, and integrated storage. The preferred size of parts and their interfaces.
The purpose of this guide is to standardize the priority sizes of assembled decoration parts and components, promote the systematic coordination of standardized parts and components by market entities such as development, design, production, construction, operation and maintenance, and solve the problem of construction units, design units, parts and components manufacturers, construction The barriers between units improve the versatility and interchangeability of parts and components, guide the standardized production of parts and components, reduce on-site installation and cutting, reduce material waste, reduce dust pollution, reduce construction waste, and increase assembly rate.
The formulation of the standard size of building components can better standardize the production process of the industry. in the past few years, you will see the demands of small steel bar processing machinery like small steel bar bender/rebar cutting machine demands is reducing more than 50%, and more and more automatic steel bar processing factory is built, the demands of big automatic steel bar machinery like the automatic steel bar stirrup bender,automatic steel bar truss resistance welding machine, automatic mesh welding machine is increasing at least 300%.
Link: http://www.mohurd.gov.cn/wjfb/202109/t20210917_251595.html