b'suchasUL1703,Standardforof the PV systems. This appara-Flat-PlatePhotovoltaicModulestus can test a 3 x 3 array system andPanels(forevaluatingper- installed on the roof assembly, formance of modules). One concernbothinportraitandlandscape that has been raised is that the ef- orientations. It can test the PV fects of cyclic and spatially variablearray system at different angles windloadsarenotcapturedbycommonly installed in the field, these static tests. from five degrees to 30 degrees. PVRA Research StudyIt also has the provision to test and CSA Standarddifferentinter-rowspacingsbe-tween the PV panels. The project Development hascompletedthepreliminary Incollaborationwiththetesting of different PVRA com-roofingandsolarindustrybinations and is racing towards (RCABC,NRCA,CRCA,developing the CSA standard.ARCA, Soprema, Sika Sarnafil, GAFandCANSIA),NRCisConclusionconductingaresearchstudyCleanenergyinitiativesare to address the missing link be- here to stay, especially the roof-tween the design and resistance ofthePVRA.Thisstudyhasmounted solar panels. With the three major tasks. energy codes gearing to take in-Task1focusesondevelop- cremental steps to make build-ing a dynamic test method toings net-zero energy ready, and evaluate and quantify the criti- asbusinessesandgovernmentsPicture 1: Courtesy: Solar under storm (CIQ Engineering)cal wind effects on PVRA, i.e.,movetowardsgreeninitia-internalforcesinPVsupporttives, the PV will become a stan-systems, reactions on the roofdard component of the building assemblyandupliftorslidingenvelope as a reliable renewable of the PV system. energyharvestingsource.The Task2quantifiesthePVongoingresearchworkbeing systems adverse effects on theconducted by NRC in collabo-roofing assembly serviceability. ration with the roofing and solar Task 3 is progressing this re- industry to create a PVRA wind search information towards de-veloping the first North Ameri- pressure resistance standard will canstandardforthedynamicassurethatPVRAintegrityis evaluation of the wind pressuremaintained and the PV perfor-resistance of PVRA. mance is optimized.Over the last two years, theSudhakar Molleti, Ph.D., and Mau-project has advanced in devel- ricioChavez,Ph.D.,areResearch oping a state-of-the-art test ap- Officers in the Roofing Systems and paratus for the dynamic testingInsulation Group at NRC. Picture2: Courtesy: FEMAFigure 3: Failure of PV systems and their impact on the roof assemblyDONT CARRY A TORCH FOR HOT ROOFING! GO FLAMELESS WITH TREMCO ROOFING!SAFERCLEANERLESS DISRUPTIVEFOR MORE INFORMATION, CONTACTlearnmore@tremco.ca800.668.9879PART OF TREMCO CONTRUCTION PRODUCTS GROUPORN THE ONLY SOURCE FOR PROFESSIONAL ICI ROOFING CONTRACTORS IN ONTARIO ONTARIO ROOFING NEWSISSUE 2 202127'