Search result: GB 50345-2012 (GB 50345-2004 Older version)
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| GB 50345-2012 | English | 145 |
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Technical code for roof engineering
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GB 50345-2012
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| GB 50345-2004 | English | RFQ |
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Technical code for roof engineering
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GB 50345-2004
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| Standard ID | GB 50345-2012 (GB50345-2012) | | Description (Translated English) | Technical code for roof engineering | | Sector / Industry | National Standard | | Classification of Chinese Standard | P32 | | Classification of International Standard | 91.060.10 | | Word Count Estimation | 177,110 | | Older Standard (superseded by this standard) | GB 50345-2004 | | Quoted Standard | GB 50015; GB 50016; GB 50057; GB 50176; GB 50189; GB/T 5574; GB 8624; GB/T 11944; GB 15763.3; GB 16776; JGJ 26; JGJ 75; JGJ 134; JG/T 231; JC/T 882; JC 1066; HG/T 3100 | | Summary | This Chinese standard applies to building construction roofing project design and construction. |
UDC
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
P GB 50345-2012
Technical Code for Roof Engineering
Issued on. May 28, 2012 Implement on. October 1, 2012
Jointly issued by the Ministry of Housing and Urban-Rural Development
(MOHURD) and the General Administration of Quality
Supervision, Inspection and Quarantine (AQSIQ) of the
People's Republic of China
Ministry of Housing and Urban-Rural Development (MOHURD)
Announcement
No.1395
Announcement on Issuring the National Standard "Technical Code
for Roof Engineering"
"Technical Code for Roof Engineering" has been approved as a national standard with a
serial number of GB 50345-2012, and it shall be implemented on October 1, 2012. Thereinto,
aritcles 3.0.5, 4.5.1, 4.5.5, 4.5.6, 4.5.7, 4.8.1, 4.9.1 and 5.1.6 are compulsory provisions and
must be enforced strictly. The formser national standard "Technical Code for Roof
Engineering" (GB 50345-2004) shall be abolished simultaneously.
This stadard is published by China Architecture & Building Press under the organization
of the Standard Rating Research Institute of our Ministry.
Ministry of Housing and Urban-Rural Development (MOHURD)
May 28, 2012
Foreword
According to the requirements of "Notice on Printing the Development and Revision
Plan of Engineering Construction Standards in 2009" (Jian Biao [2009] No. 88) issued by
Ministry of Housing and Urban-Rural Development, this code is revised and drafted on the
basis of "Technical Code for Roof Engineering"GB 50345-2004 by Shansi Construction
engineering (Group) Corporation and Zhejiang Greatwall Construction Group Co., Ltd.
jointly with the departments concerned.
This standard consists of 5 chapters and 2 appendixes. The main content covers general
provisions, terms, basic requirement, roof engineering design, roof engineering construction,
etc.
In this Code, the provisions printed in black body type are compulsory ones and must be
enforced strictly.
The Ministry of Housing and Urban-Rural Development is in charge of the
administration of this Code and the explanation of its compulsory provisions, and Shansi
Construction engineering Corporation is responsible for the explanation of its specific
technical contents. All relevant organizations are kindly requested to sum up and accumulate
your experiences in actual practices and accumulate information during the process of
implementing this code. The relevant opinions and advice, whenever necessary, can be
fedback to Shansi Construction engineering Corporation (address. No.9, Xinjian Road,
Tiayuan 030002, Shanxi Province, E-mail. 4085462@sohu.com).
Chief drafting organizations. Shansi Construction engineering Corporation and Zhejiang
Greatwall Construction Group Co., Ltd.
Participating Development Organizations. Beijing Building Construction Research
Institute, Zhejiang University of Technology, Taiyuan University of Technology, China
Academy of Building Research, China Building Materials Academy - Suzhou Waterproof
Reseach Institute, Suzhou New Building Waterproffing Engineering Co., Ltd., China Building
Waterproffing Association, Hangzhou Jintang Building Waterproffing Co., Ltd., China
Institute of Building Standard Design and Research, Beijing Shengjie Water Proofing
Material Co., Ltd., Shanghai Terra Engineering & Industry Co., Ltd., Dalian Xiyang
Waterproofing Engineering (Group) Co., Ltd., Ningbo Kede Building Materials Co., Ltd.,
DuPont China (Group) Co., Ltd., Owens Corning (China) Co., Ltd., and Ningbo Shanquan
Building Materials Co., Ltd.
Participating organizations. Dow Chemical (China) Investment Company Limited,
Dafuxi Building Material Trade (Shanghai) Co., Ltd., and Special Interest Committee on
Isocyanate of China Polyurethane Industry Association
Chief drafting staffs. Hao Yuzhu, Huo Ruiqi, Yan Yongmao, Li Hongwei, Shi Jiong, Zhu
Dongqing, Wang Shouhua, Ha Chengde, Ye Linbiao, Xiang Huatai, Ma Yunfang, Wang Tian,
Gao Yanji, Zhang Wenhua, Yang Sheng, Jiang Jingbo, Du Hongxiu and Hu Jun
Chief examiners. Li Chenggang, Cai Shaojun, Niu Guangquan, Yang Shanqin, Li
Yinqing, Zhang Daozhen, Yu Xinguo, Ye Linchang and Wang Wei
Conetens
1 General Provisions...1
2 Terms... 1
3 Basic Requirement...2
4 Roof Engineering Design... 4
4.1 General Requirements...4
4.2 Drainage Design...5
4.3 Design of Sloping Layer and Leveling Layer... 6
4.4 Design of Thermal Insulation Layer and Insulation Layer... 7
4.5 Design of Sheet and FilmWaterproof Layers...10
4.6 Joint Seal Waterproofing Design...12
4.7 Design of Protection Layer and Isolation Layer... 14
4.8 Design of Tile Roof...15
4.9 Design of Metal Plate Roof...17
4.10 Design of Glass Skylight System...19
4.11 Detailed Structure Design... 21
5 Roof Engineering Construction... 39
5.1 General Requirements...39
5.2 Sloping Layer and Construction...40
5.3 Construction of Thermal Insulation Layer and Thermal Barrier... 41
5.4 Construction of Sheet Waterproof Layer... 44
5.5 Construction of FilmWaterproof Layer...47
5.6 Construction of Joint Sealing And Waterproofing... 48
5.7 Construction of Protection Layer and Isolation Layer...50
5.8 Construction of Tile Roof... 51
5.9 Construction of Metal Plate Roof... 53
5.10 Construction of Glass Skylight System... 54
Appendix A Standards for Water Proofing and Thermal Insulation Materials for Roof
Engineering...57
Appendix B Main Performance Indexes of Waterproofing and Thermal Insulating Materials
for Roof Engineering... 59
Explanation of Wording in this Code...67
List of Quoted Standards... 68
1 General Provisions
1.0.1 This Code is formulated in order to promote the roof engineering level in China,
ensure quality, and make the roof engineering of economic feasibility, safety & usability,
environmental protection and energy conservation.
1.0.2 This standard is applicable to the design and construction of roof engineering in
building construction.
1.0.3 The design and construction of roof engineering shall comply with the relevant
requirements of the nation on environmental protection, building energy conservation, fire
safety and so on, and be prepared with corresponding measures.
1.0.4 The design and construction of roof engineering shall meet the requirements of the
current relevant standards of the nation besides this Code.
2 Terms
2.0.1 Roof project
Design and construction of building roof composed of structural layers such as water
proofing, thermal insulation, heat insulation and so on
2.0.2 Vapor barrier
Structural layer that prevents indoor vapor permeating into insulation layer
2.0.3 Thermal insulation layer
Structural layer that reduces heat exchange on roof
2.0.4 Waterproof layer
Structural layer that isolates water from permeating into building inside
2.0.5 Isolation layer
Structural layer that eliminates adverse effects like adhesive force, mechanical snap-in
force and chemical reaction between two adjacent materials
2.0.6 Protection layer protection layer
Structural layer that protects waterproof layer or thermal insulation layer
2.0.7 Insulation layer
Structural layer that reduces transmission of solar heat into interior
2.0.8 Compound waterproof layer
Waterproof layer composed of sheets and coating compatible with each other
2.0.9 Additional layer
Sheet or film reenforcement layer arranged on position vulnerable to leak or breakage
2.0.10 Waterproof cushion
Structural layer that functions water- and damp-proofing under tiling or metal sheet
2.0.11 Nail-supporting layer
Structural layer of tile roof that hold fixing nails
...
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