b'SOLAR REFLECTIVITY ASSEMBLY FEATURES: 1.5 m high double-glazed conventional aluminumcurtain wall. Double glazed IGU includes SGAG-43 Low-E on #2and air gap between panes of glass. 200 mm (8) rigid roof insulation with 2% slopeon a flat deck. Concrete parapet with metal flashing. Figure 6: AERL southeast roof schematic model (Morrison Hershfield).Data and Modeling measured temperature data, weektest roof, and allowing for repre-Initialdatawasmonitoredforseveraloverweek(fromJanuary2020sentativeseasonalandcloud months to ensure data generation wastoSeptember2020),couldbecovervariation.Comparing consistentandthatvariableswerecompared to the simulated results.themodeledresultstothose identifiedandaccountedfor.Then,Theselecteddaysoftheweekmodeled for the UBC Vancouver theworkingsetofdatawascollectedrepresentedseasonalvariationincampus,theimpactofclimate for one year, from September 2019 tosolar exposure and various cloudon the membrane temperatures September 2020. The data was modeledcover conditions. This allowed forwas explored.and analyzed by Morrison Hershfield incalibrationofdirectandindirect4.Adjacent Wall Composition: collaborationwithEvoke,usingNX 3 solar radiation in the model.Toinvestigatetheimpactof software(Siemens).Figure6showsa3. BuildingLocation:Thecali- theglazingreflectionontherepresentative section of the roof studybratedmodelwasthenusedtoroofsurfacetemperatures,the area.Modelingwasperformedusingpredict roof surface temperaturesmodels were run with an adja-issuedconstructiondrawingsprovidedin another B.C. climate, using thecent opaque wall with low reflec-by the owner.samerooffinishprofilesonthetance properties. TheNXmodelincorporatedthe complex radiation exchange between the roofandclerestoryglazing,including time-of-dayvariationsinexterior temperatureandsolarradiation.The followingperformancevariablesand their associated impact on roof surface temperaturesformedthefocusof the study:Finish: Modeling replicated 1. Roof the same finishes used on the study area at the AERL; data from theWITH BEACONstudy areas was utilized to calibrate the modeled results for the various roof surfaces. 2.Weather Data:To validate the model, three different days of the weekwereselectedsothatthe 12510 82 Avenue, Surrey, BC V3W 3E83 Nx is a 3D thermal modelling software package, a 314 Totom Avenue, Kelowna, BC V1X 5C2general-purpose computer aided design (CAD) andbeacon-canada.comfinite element analysis (FEA) package, is produced by Siemens.www.rcabc.org l25'