bsi. ..making excellence a habit 需要更多标准请联系 wechat: wpwyq310 BSIS022509:2020 BSlStandardsPublication Glass in building -Heat strengthened sodalimesilicateglass bsi. BSIS022509:2020 BRITISHSTANDARD Nationalforeword ThisBritishStandardistheUKimplementationofISQ22509:2020. TheUKparticipationin itspreparationwasentrustedtoTechnical CommitteeB/520,Glassandglazinginbuilding. Alistoforganizationsrepresentedonthiscommitteecanbeobtainedon requesttoitscommitteemanager. This publicationdoesnotpurporttoincludeall thenecessaryprovisions ofa contract.Usersareresponsibleforitscorrectapplication. TheBritishStandardsInstitution2020 PublishedbyBSIStandardsLimited2020 ISBN9780539013283 ICS81.040.20 CompliancewithaBritishStandardcannotconferimmunityfrom legalobligations. ThisBritishStandardwaspublishedundertheauthorityofthe Amendments/corrigendaissuedsincepublication Date Textaffected 3 3