JGJ 227-2011Technical specification for low-rise cold-formed thin-walled steel buildings (English PDF)

Foreword

In accordance with the requirements of the original Ministry of Construction of the Notice on the Printing and Issuing of the Establishment and Revision Plan of 2007 Engineering Building Standards (Batch 1) (JB [2007] No.125), the specification compilation group compiles this specification through extensive investigation and study, carefully summarizing practical experiences, making reference with relevant international standards and advanced foreign standards, AND based on the wide solicitation of opinions.

The provisions indicated in boldface in this specification are mandatory, which must be strictly enforced.

As for this specification, the Ministry of Housing and Urban-Rural Development of the People's Republic of China is responsible for the management and the interpretation of the mandatory provisions, AND the China Building Standards Design Institute is responsible for the interpretation of specific technical content. Any comments or suggestions during the implementation of this specification please send to China Building Standard Design Institute (No.2 International Building, No.9, Shouti South Road, Haidian District, Beijing 100048, China).

The responsible drafting organizations of this specification. China Building Standard Design and Research Institute the participating drafting organizations of this specification.

Xi'an University of Architecture and Technology Tongji University Changan University Tsinghua University Ministry of Public Security Tianjin Fire Research Institute BlueScope Steel (China) Shanghai Meijian Steel Structure Co., Ltd North New Housing Co., Ltd Shanghai Green Building System Co., Ltd Owens Corning (China) Investment Co., Ltd Beijing Hostec Steel Structure Co., Ltd China Construction Metal Structure Association Construction Steel Structure Committee Zhejiang Hangxiao Steel Structure Co., Ltd Shanghai Beststeel Structure Building Co., Ltd the main drafter of this specification. Shen Zuyan, He Baokang, Yu Yinquan, Zhou Tianhua, Shen Lin, Li Yuanqi, Guo Yanlin, Wang Yanmin, Liu Chengzong, Su Mingzhou, Qin Yafei, Wang Zongcun, Zhang Yuefeng, Zhang Zhongquan, Jiang Tao, Yang Pengfei, Yang Jiayi, Du Zhaoyu, Li Zhengchun, Yang Qiangyue, Wu Shuchong the main reviewer of the specification. Zhang Yaochun, Zhou Xuhong, Chen Xueting, Xu Houjun, Jiang Xueshi, Guo Yaojie, Gu Qiang, Li Zhiming, Guo Bing Contents

1 General provisions ... 8

2 Terms and symbols ... 8

2.1 Terms ... 8

3 Materials and design indices ... 14

3.1 Material selection ... 14

3.2 Design indices ... 16

4 Basic design requirements ... 17

4.1 Design principles ... 17

4.2 Loads and actions ... 18

4.3 Architectural design and structural layout ... 19

4.4 Allowable value for deformation of structures and structural members ... 22

4.5 General requirements for detailing ... 23

5 Structural analysis ... 26

5.1 Calculation principles of structures ... 26

5.2 Analysis of horizontal load effects ... 27

6 Calculation of members and connections ... 29

6.1 Calculation of members ... 29

6.2 Calculation and detailing of connections ... 36

7 Floor systems ... 37

7.1 General requirements ... 37

7.2 Detailing of floor systems ... 38

8 Wall framing systems ... 45

8.1 General provisions ... 45

8.2 Calculation of wall framings ... 47

8.3 Requirements for detailing ... 51

9 Roof systems ... 56

9.1 General requirements ... 56

9.2 Calculation of roof systems ... 57

9.3 Requirements for detailing of roof joints ... 59

10 Fabrication, coating, erection and acceptance ... 61

10.1 Fabrication ... 61

10.2 Coating works of anticorrosion ... 61

10.3 Erection ... 62

10.4 Final acceptance ... 63

11 Heat preservation and insulation, damp proof ... 65

11.1 General requirements ... 65

11.2 Detailing of heat preservation and insulation ... 66

11.3 Detailing of damp proof ... 66

12 Fireproofing ... 67

13 Testing... 68

13.1 General requirements ... 68

13.2 Performance testing ... 68 Appendix A Test method on design shear strength of screws ... 71 Appendix B Test method on shear strength of wall framings ... 74 Appendix C Calculation on distortional buckling stress of C shape members 77 Explanation of wording in this specification ... 80 List of quoted standards ... 81 [Translator note. Above "Contents" is the original contents from the Chinese version] Technical specification for low-rise cold-formed thin-walled steel buildings

1 General provisions

1.0.1 This specification is established for the purposes of standardizing the design, fabrication, erection and acceptance of low-rise cold-formed thin-walled steel buildings, in order to realize advanced technology, reasonable economics, safety and applicability, and high quality.

1.0.2 This specification is applicable to the design, construction and acceptance of low-rise buildings with cold-formed thin-walled steel as the main bearing steel-members [Translator note. For the purpose of this standard, "steel-" is additionally prefixed in front of "member", hereafter the same], having not more than 3 floors, AND with the eave height not more than 12m.

1.0.3 This specification is established in accordance with the principles as specified in current national standards "Unified standard for reliability design of building structures" GB 50068, "Load code for the design of building structures" GB 50009, "Code for seismic design buildings" GB 50011, "Code for design of steel structures" GB 50017, "Technical code of cold-formed thin-wall steel structures" GB 50018, and "Code for acceptance of construction quality of steel structures" GB 50205, and so on, AND combining with the low-rise cold-formed thin-walled steel building characteristics.

2 Terms and symbols