DB11T 1979-2022住宅厨卫排气道系统应用技术标准.pdf

北京市地方标准DB编号：DB11/T1979-2022住宅厨卫排气道系统应用技术标准Technical standard for application of exhaust systemin residential building(京津冀区域协同工程建设标准)2022-03-28发布2022-04-01实施北京市住房和城乡建设委员会联合发布北京市市场监督管理局DB11/T1979-2021ContentsI General provisions.2TemS23 Basic requirement.44 Material.54.1 Exhaust duct.54.2 Fire resisting check damper74.3 Guiding device.84.4R0ofC0wl.85 Design105.1 General requirement.105.2 System.105.3 Exhaust duct.125.4 Air inlet.135.5 Reflux prevention measures145.6 Cowl ventilator.145.7 Exhaust equipment.166 Construction.176.1 General requirement.176.2 Receiving inspection.186.3 Exhaust duct installation.206.4 Cowl ventilator installation.216.5 Fireproof check valve installation.227Test and acceptance.237.I General requirement237.2Aerodynamic property test.237.3 System acceptance.24Appendix A Acceptence records for residential exhaust system.27Appendix B Fire resistance test method for residential exhaust34Appendix C Residential exhaust system air-leakage test.38Appendix D Residential exhaust system air dynamic property test.40Appendix E Wind resistance test for cowl ventilator.43Explanation of wording in this standard.45List of quoted standards.46Addition:Explanation of provisions.47