ISO INTERNATIONAL STANDARD 28278-1 First edition 2011-12-01 Glass in building Glass products for structural sealant glazing - Part 1: Supported and unsupported monolithic and multiple glazing Verre dans la construction-Produits verrierspourvitrage exterieur colle Partie 1:Vitrages monolithiques oumultiples, supportes ou non supportes Reference number ISO 28728-1:2011(E) @ISO2011 ISO28728-1:2011(E) COPYRIGHTPROTECTEDDOCUMENT ISO2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either iSO at the address below or IsO's member body in the country of the requester. ISO copyright office Case postale56.CH-1211Geneva20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ISO 28728-1:2011(E) Contents Page Foreword 1 Scope, Normativereferences. 3 Terms and definitions. 4 Symbolsand abbreviatedterms. 5 Principle. Required characteristics of glass products. 6 10 6.1 Appropriateglassproducts .... 6.2 Dimensionaltolerances.... 6.3 Glassshapes. 6.4 Corners, notches and holes 7 Verificationofthesuitabilityofglassproductsforuse inSsG systemswhenexposedto ultra-violet (UV) radiation... 13 7.1 General.... 7.2 Insulating glass unit (IGU). 13 7.3 Laminatedglassormonolithicglass Situation3(seeFigure3) 15 7.4 Assessmentoftheadhesionbetweenthesealantandtheglass... 15 8 Design... 8.1 Calculationofthethicknessoftheglass 16 8.2 Calculation of the height of the outer sealant of theIGUforsupported andunsupported glazing .... .16 8.3 Calculation of the height of the outer sealant of the IGU for unsupported glazing .... .21 AnnexA(informative)Assemblyrequirement. Annex B (normative) Structural and/or ultra-violet (UV)-resistant sealant (for use with structural sealant glazing and/or IGUs with exposed seals)........ .26 AnnexC(normative)Evaluationoftestsresults AnnexD (normative)Shearat23C—Testmethod. Annex E (normative)Factory production control (FPC)requirements forsealants.. ..48 AnnexF (normative)Outer seal ofan IGUCategorydifferentiation.. ...53 AnnexG (normative)Formationof bubbles... .56 Annex H (informative) Sealing, structural bonding and UV resistance schematic illustrations ... AnnexI(normative) Initial testing of the bonding of sealant to a non-glass substrate... Bibliography ISO28728-1:2011(E) Foreword non-governmental, in liaison with sO, also take part in the work. Iso collaborates closely with the InternationalElectrotechnicalCommission(iEC)onallmattersofelectrotechnicalstandardization International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. 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 memberbodies casting a vote. ISO28728-1was prepared byTechnical Committee ISO/TC 160, Glass in building,Subcommittee SC2,Use considerations. structural sealantglazing: Part1:Supportedandunsupportedmonolithicandmultipleglazing Part2:Assemblyrules INTERNATIONALSTANDARD ISO 28728-1:2011(E) Glass in building Glass products for structural sealant glazing Part 1: Supported and unsupported monolithic and multiple glazing 1 Scope This part of Iso28278 specifies requirements for the suitability of supported and unsupported glass products (see Figure 1) for use in the structural sealant glazing (SSG) technique. Regarding glass products, this part of iso 28278 constitutes a supplement to the requirements specified in the corresponding IsO standards with regard to verifying suitability for use in SsG systems. Only soda lime silicate glass is taken into consideration in this part of IsO 28278. The glass products are installed and bonded into the support under controlled environmental conditions, as described in ISO 28278-2. Plastic glazing is excluded from the