ISO INTERNATIONAL STANDARD 6944-1 First edition 2008-04-15 Fire containment Elements of building construction - Part 1: Ventilation ducts Endiguement du feu Eléments deconstruction- Partie 1: Conduits de ventilation Reference number ISO 6944-1:2008(E) @ ISO 2008 ISO 6944-1:2008(E) Contents Page Foreword. Introduction 1 Scope 2 Normative references 3 Terms and definitions 4 Apparatus. 2 5 Test conditions 10 6 Test specimen.... 7 Installation of test specimen . 8 Conditioning.... 9 Application of instrumentation. .16 10 Test procedure.. 22 11 Performance criteria ... 12 Test report ... 13 Field of direct application of test results Annex A (informative) General guidance.. Bibliography .... @Iso 2008 -All rights reserved ii ISO 6944-1:2008(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies). The work of preparing International Standards is normally carried out through IsO technical committees. Each member body interested in a subject for which a technical committee has beer established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with isO, also take part in the work. sO collaborates closely with the InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 6944-1 was prepared by Technical Committee ISO/TC 92, Fire safety, Subcommittee SC 2, Fire containment. This first edition of IsO 6944-1, cancels and replaces IsO 6944:1985, which has been technically revised. construction: Part 1: Ventilation ducts A Part 2, dealing with kitchen extract ducts, is under development. IV @ ISO 2008 - All rights reserved