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<br /> <br /> <br /> <br /> <br />Inputs Roof 1 Unit <br />Roof Dead Load (DLr)9 psf <br />Roof Live Load (LLr)20 psf <br />Roof Snow Load (SLr)0 psf <br />(DLr+LLr)/Cd =23.2 psf <br />(DLr+SLr)/Cd=7.83 psf <br />Max. Existing Gravity Load 23.2 psf <br />Roof Dead Load with PV Panel Load (DL)12 psf <br />Roof Live Load (LL)0 psf <br />Roof Snow Load (SL)0 psf <br />(DL+LL)/Cd =13.33 psf <br />(DL+SL)/Cd=10.43 psf <br />Max. Proposed Gravity Load 13.33 psf <br />% Change =-42.54 % <br />Proposed Gravity Loads <br />The change in gravity loads for Roof 1 after the proposed <br />solar installation is less than 5%, therefore passes the <br />Impact Check. <br />IEBC IMPACT CHECK <br />Existing Gravity Loads <br />ASCE 7-16