ISO INTERNATIONAL STANDARD 7174-1 First edition 1988-07-01 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION Furniture - Chairs - Determination of stability Part 1: Upright chairs and stools Ameublement-Chaises-Determinationdelastabilite Partie 1: Chaises et tabourets droits Referencenumber ISO 7174-1 : 1988 (E) ISO 7174-1 : 1988 (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 been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with iSo, also take part in the work. Is collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to themember bodies for approval before their acceptance as International Standards by least 75% approval by themember bodies voting. International Standard ISO7174-1was prepared byTechnical Committee ISO/TC 136, Furniture. Users should note that all international Standards undergo revision from time to time and that any reference made herein to any other International Standard implies its latestedition,unlessotherwisestated. ? InternationalOrganizationforStandardization,1988 Printed in Switzerland i= ISO7174-1:1988 (E) Contents Page Introduction. Scope and field of application 2 Reference. 3 Definition 4 Testequipment Conditioning 5 General test requirements 2 Testprocedures. 2 7.1 Experimental method - Chairs.. 2 7.2 Experimental method-Stools:all directions 2 7.3 Calculativemethod-Chairs. 3 7.4 Calculative method -Stools: all directions 3 8 Testreport 3 Annex Suggested minimum overturning forces for stability of all types of adult chairs according to their loaded seat heights. .