UDC NATIONALSTANDARD OFTHEPEOPLE'SREPUBLICOFCHINA 中华人民共和国国家标准 P GB50345-2012 Technical CodeforRoofEngineering 屋面工程技术规范 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 Issuing the National Standard"Technical Code forRoofEngineering" "Technical Code for Roof Engineering" has bcen approved as a national standard with a serial number of GB 50345-2012 and it shall be implemented from October 1 2012. Thereinto articles 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 pulsory provisions and must be enforced strictly. The former national standard "Technical Code for Roof Engineering" (GB 50345-2004) shall be abolished simultaneously. This standard 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) May28 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 (Group) Corporation and Zhejiang Greatwall Construction Group Co. Ltd. jointly with the departments concermed. This standard consists of 5 chapters and 2 annexes. The main content covers general provisions terms basic requirement design of roof projects construction of roof projects etc. In this Code the provisions printed in black body type are pulsory 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 pulsory provisions and Shansi Construction engineering Corporation is responsible for the explanation of its specific technical content. 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 if necessary can be feedback to Shansi Construction engineering Corporation (address: No. 9 Xinjian Road Taiyuan 030002 Shanxi Province E-mail: 4085462@ sohu.). 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 Research Institute Suzhou New Building Waterproofing Engineering Co. Ltd. China Building Waterproofing Association Hangzhou Jintang Building Waterproofing 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 Committe on Isocyanate of China Polyurethane Industry Association Chief drafing 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 Hu Jun Wang Zuguang Shang Huasheng Chen Ping Du Xin Cheng Xuefeng Fan Xiyang Yao Maoguo Mi Ran Wang Conghui and Ye Quanyou Chief examiners: Li Chenggang Cai Shaojun Niu Guangquan Yang Shanqin Li Yinqing Zhang Daozhen Yu Xinguo Ye Linchang and Wang Wei
Conetens 1General Provisions 2 Terms.. 3Basic Requirements. 2 4 Design of Roof Projects. .4 4.1 General Requirements. .4 4.2 Design of Drainage 6 4.3 Design of Leveling Slope and Leveling Blanket. .7 4.4 Design of Thermal Insulation Layer and Heat Insulation Layer.. .7 4.5 Design of Membrane and Film Waterproof Layers.. ..10 4.6 Design of Joint Seal Waterproofing ...13 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... .20 4.11 Detailed Structure Design. .21 5 Construction of Roof Projects. .39 5.1General Requirements. 39 5.2 Leveling Slope and Construction. ..40 5.3 Construction of Thermal Insulation Layer and Insulation Layer. ..41 5.4 Construction of Membrane Waterproof Layer . 44 5.5 Construction of Coating Waterproof Layer.. ..7 5.6Construction of Joint-sealing Waterproof Layer. .49 5.7 Construction of Protection Layer and Isolation Layer . ..50 5.8 Construction of Tile Roof.. .52 5.9 Construction of Metal Plate Roof. 54 5.10 Construction of Glass Lighting Roof . 55 Annex A Standards of Waterproof Materials and Thermal Insulation Materials Used for Roof Projects. 58 n s s e s o o x x Roof Projects. 60 Explanation of Wording in this Code. .69 List of Quoted Standards. ..70
1GeneralProvisions 1.0.1 This Code is formulated in order to promote the roof engineering level in China ensure quality and make the roof projects feature in economic feasibility safety & usability. environmental protection and energy conservation. 1.0.2 This standard is applicable to the design and construction of roof projects for house building. 1.0.3The design and construction of roof projects shall ply with the relevant requirements of the nation on environmental protection building energy conservation fire safety and so on and the corresponding measures be prepared for such design and construction. 1.0.4 The design and construction of roof projects shall meet the requirements of the current relevant standards of the nation besides this Code. 2Terms 2.0.1 Roof project Design and construction of building roof posed 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 from permeating into insulation layer 2.0.3 Thermal insulation layer Structural layer that reduces heat exchange of roof 2.0.4Waterproof 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 Structural layer that protects waterproof layer or thermal insulation layer 2.0.7 (Heat) insulation layer Structural layer that reduces transmission of solar heat into interior 2.0.8Compound waterproof layer Waterproof layer posed of membranes (shcets) and coating patible with each other 2.0.9 Additional layer Membrane or film reinforcement 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
英文版 GB 50345-2012 屋面工程技术规范.pdf
