b'MISEJOUR TECHNIQUEA123.21, the corresponding test pressure, for which the TS successfullytre appliqu pour les EE dont la pression soutenue completed all required numbers of gusts before termination of theest infrieure ou gale11,5 kPa (240 psf). Une autre test, is labelled as sustained pressure. By multiplying the sustainedmthodeestgalementfourniedanslanorme.La pressure with a resistance factor, factored wind uplift resistance ofrsistanceausoulvementventpondredoittre the TS is obtained. The standard offers two options for designers togale ou suprieurela charge de calcul.calculate the resistance factor. A maximum resistance factor of 0.65 can be applied for the TS with sustained pressure less than or equalQ3: Quelles sont les principales rvisions to 11.5 kPa (240 psf). An alternate method is also provided in theapportesla norme CSA A123.21-2020 ?standard for resistance factor determination. Factored wind upliftIl y a quatre rvisions majeures :resistance should be equal to or greater than the design load. 1. Exigences relatives au platelage en bton avantlinstallation des composants (section 7.1.1) ;Q3: What are major revisions to CSA A123.21-2020? 2.Exigencesrelativesauxprouvettespourles There are four major revisions: diffrentstypesdesystmesdecouverture, 1. Concrete deck requirements before components installationassorties dillustrations (section 7.2) ;(Section 7.1.1); 3.Pourallongementdesdonnestestes,les 2. Test specimen requirements for various type of roof systems,exigencesrelativesauxmodificationsdes which were clarified with illustrations (Section 7.2); composantsdessystmestestssontlabo-3. Toexpandtesteddata,requirementsforthecomponentsressurlabaseduneenquteduGISEDSC alterationstothetestedsystemsaredevelopedbased(annexe D) ; etonanextensiveSIGDERSexperimentalinvestigation4. Afin dassurer luniformit et la cohrence entre (Annex D); and les laboratoires menant lessai CSA A123.21, des 4.To ensure uniformity and consistency among the test labs whenlignes repres sont prsentes pour les pressions performing the CSA A123.21 test, guidelines are presented fordessai accrues de 240 psf (annexe G).the increased test pressures of 240 psf (Annex G). Enoutre,plusieursditoriauxetdesnormes In addition, several editorials and updated referenced standardsderfrencemisesjourserontinclusdansla are included in the upcoming edition. prochaine dition.AUTOMNE/HIVER 2025 COUVERTURES CANADA 41'