NTERNATIONAL STANDARD (TSO 3447 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEKIYHAPOAHAN OPTAHI3ALIWR TIO CTAHIAPTI3ALIWN ORGANISATION INTERNATIONALE DE NORMALISATION Joints in building - General check-list of joint functions Joints dans le batiment -- Liste generale aide-mémoire des fonctions des joints First edition - 1975-11-01 UDC 72.011 Ref. No. ISO 3447-1975 (E) 3447-1975 ( Descriptors : buildings, construction, joints, specification, design, selection. 8 Price based on 2 pages CopyrightIntemationalOrganizationfor Standardization ed without license from IHS Not for Resale FOREWORD IsO (the International Organization for Standardization) is a worldwide federation of national standards institutes (Iso Member Bodies). The work of developing International Standards is carried out through IsO Technical Committees. Every Member Body interested ina subject for which a Technical Committeehas been set up has the right to be represented on that Committee. International organizations. governmental and rion-governmental, in liaison with isO, also take part in the work. Draft International Standards adopted by the Technical Committees are circulated to the Member Bodies for approval before their acceptance as International Standards by the IsO Council, International Standard ISO 3447 was drawn up by Technical Committee ISO/TC 59, Building construction, and circulated to the Member Bodies in June 1974. It has been approved by the Member Bodies of the following countries : Germany Norway Austria Belgium Hungary Romania Brazil Iran South Africa, Rep. of Canada Ireland Thailand Israel United Kingdom Denmark Egypt, Arab Rep. of Italy Yugoslavia Finland Netherlands France New Zealand The Member Body of the following country expressed disapproval of the document on technical grounds : Switzerland This International Standard forms one of a series concerning joints in building. The series includes the following International Standards : IsO 2444, Joints in building - Vocabulary. IsO 2445, Joints in building - Fundamental principles for design. @ International Organization for Standardization, 1975 : Not for Resale INTERNATIONAL STANDARD ISO 3447-1975 (E) Joints in building - General check-list of joint functions 1 SCOPE AND FIELD OF APPLICATION A3To control passage of dust and inorganic particles This International Standard gives a general check-list of A4 To control passage of heat functions of joints1) in building for use in their design. A5 To control passage of sound A6 To controi passage of light 2 METHOD OF USE OF THE CHECK-LIST A7 To control passage of radiation The initial stage in the design of a jointis to determine the conditions applying to it. The next stage is to identify the To control passage of air and other gases functions it has in consequence to perform, both those To control passage of odours relating to the functions of the joined components and those resulting from the presence of the joint as such. While A10 To control passage of water, snow and ice some functions will be obviously relevant in any particular A11 To control passage of water vapour situation in a building, it is necessary for all criteria to be considered if the design is to be complete. Failure in the : A12 To control condensation performance of only one required function may produce a failure of the joint. A13 To control generation of sound The identification of the range of functions that must be A14 To control generation of odours satisfied is simplified if the designer can check against a general list covering the great majority of considerations in 3.2 Capacity to withstand stress2) the selection of a jointing technique. This International Standard provides such a general list in which functions are To resist stress in one or more directions due to : grouped under design aspects. Any one joint will be B1 compression required to satisfy a selection of functions only. However, as the list cannot be comprehensive, the designer may have B2 tension