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Use this loading combination for DOWNWARD for Existing Dead Loads and Proposed PV Dead Load <br />34.47 34.47 34.47 36.25 <br />585 585 585 615 <br />Use this loading combination for UPWARD for Proposed PV Dead Load <br />-3.74 -5.67 -9.08 5.20 <br />-63 -96 -154 88 <br />sf 810 <br />psf 33.89 <br />lb 27,455 <br />ea 18 <br />sf 378 <br />lb 28,345 <br />3.2% <br />OK <br />ea 18 Within Limits <br />ea 27 OK <br />In accordance with 'IBC 3404.3 Existing Structures Carrying Gravity Loads', the net increase in roof load after adding <br />the PV modules, is less than 5%. Hence, no structural modifications for this structure are required. <br />6. D + 0.75L - 0.75(0.60W) + 0.75(Lr or S or R) <br />Module Support point load (lb) <br />Total weight of Existing Roof + PV <br />% increase in total loading <br />Check if % increase < 5% <br />Check % Roof Load Increase <br />Total Roof Area <br />Number of PV Modules <br />Module Support point load (lb) <br />Existing Downward Roof Load <br />Existing Downward Roof Load <br />Area of PV Modules <br /># Modules Proposed <br /># Modules Allowed <br />7. 0.60D - 0.6W <br />Array AR-1 iRooFATM Copyright © 2020 Richard Pantel. All Rights Reserved.7 of 9 <br />2341 S Park Dr - <br />10-26-231/22/2024