b'EXIGENCES DE RSILIENCE AUX CHANGEMENTS CLIMATIQUESundertheNRCsclimateresiliencyofmtorologiquesprvus(vent,pluie corepublicinfrastructureproject.Itet temprature) et indique les charges takesintoaccountprojectedchangesnominalespour696villestravers inweatherelements(wind,rainandle Canada. temperature)andprovidesthedesignLeschargesclimatiquessontclas-loads for 696 cities across Canada.sesentroiscatgoriesdegravit: Theclimaticloadsareclassifiednormale,graveetextrme.Par into three climate zone severity classes:exemple,pourunbtimentdefaible normal,severeandextreme.ForhauteursituOttawa,Climate-RCI example, for a low-rise building locatedclasse le vent, la pluie et la temprature inOttawa,Climate-RCIclassifiesthecommenormaux,gravesetnormaux wind, rain and temperature as normal,avecdesdonnesdeconception severe and normal with respective designrespectives de 47 psf, 4 po et 80 F. Cet data as 47psf, 4, and 80F. This tooloutil fait galement partie de la norme alsoformspartoftheCSAA123.26,CSAA123.26, Exigencesdeperfor-PerformanceRequirementsforClimatemance des systmes de couvertureResilienceofLowSlopeMembranemembrane de faible pente .Roofing Systems. Pourdterminerladurabilitetla TodeterminethedurabilityandrsiliencedelaCBA,ilfautvrifier resiliencyperformanceofASR,fivecinqcaractristiquesdesbardeaux essentialcharacteristicsofasphaltdasphalte, y compris la rsistancela shinglesneedtobetested,includingtraction, la rsistance au dchirement, tensile strength, tear resistance, granulelenrobagedegranuls,lepouvoir embedment,sealstrengthandnailadhsif et la rsistancelenfoncement engagement resistance. Weather elementsdesclous.Leslmentsmtorolo-(wind, rain and temperature) will affectgiques (vent, pluie et temprature) vont these properties. It would be beneficialaffecter ces proprits. Il serait avan-tothemanufacturerstooptimizethetageux pour les fabricants doptimiser shinglescharacteristicsatamaterialles caractristiques des bardeaux avant level before performing system testing ordeffectuer des essais ou linstallation field installation. sur le chantier.The loads calculated by the Climate- Leschargescalculespar RCI(Wind=47psf,Rain=4,Climate-RCI(vent=47psf,pluie= andtemperature=80F)shouldbe4 po, et temprature = 80 F) doivent scientificallyconvertedintosimulatedtrescientifiquementconverties labaging/conditioningrequirements.enexigencesdevieillissementet First, the baseline data can be obtaineddeconditionnementenlaboratoire byquantifyingtheabovefiveessentialsimules. Dabord, on peut obtenir les properties of the manufactured shinglesdonnesderfrenceenquantifiant at the lab condition. Second, the dataenlaboratoirelescinqproprits obtainedonshinglesafterthelabessentielles ci-dessus. Deuximement, conditioningcyclecanrepresentitslesdonnesobtenuesaprslecycle aged properties. The lesser the variationdeconditionnementenlaboratoire between the two sets is an indication of apeuventreprsenterleursproprits better and more durable system resistancevieillies. Plus la variation est faible entre or a bigger Sweet Spot. A summary of theles deux ensembles, plus la rsistance steps to evaluate the Canadian climatedu systme est forte et plus durable, resiliencyrequirementsforASRisoupluslepointidalestgrand.La presented in Figure 3.Figure 3 prsente un rsum des tapes delvaluationdesexigencescana-Future steps diennes de rsilience climatiquelgard The above obtained Sweet Spot is limiteddes CBA.toloadandresistanceconsideration. QualityassuranceoftheinstallationProchaines tapesprocesses is also an integral part of theLe point idal obtenu ci-dessus est limit ASR service life. Installation deficiencies la prise en compte de la charge et de canbedifficulttodetectafterthelarsistance.Lassurancequalitfait PRINTEMPS/T 2021 COUVERTURES CANADA 43'