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JOB NO.: U2782.1095.201 <br /> VECTOR <br /> SUBJECT: LOAD COMPARISON <br /> En C 1 P1 E E R S <br /> PROJECT: Alfonso Aguirre Residence <br /> Summary of Loads <br /> Existing With PV Array <br /> D [psf] 10 13 <br /> Lr[psf] 20 0 <br /> S[psf] 14 14 <br /> Maximum Gravity Loads: <br /> Existing With PV Array <br /> (D+Lr)/Cd [psf] 24 15 ASCE 7-10,Section 2.4.1 <br /> (D+S)/Cd [psf] 21 24 ASCE 7-10,Section 2.4.1 <br /> (Cd=Load Duration Factor=0.9 for D,1.15 for S,and 1.25 for Lr) <br /> Maximum Gravity Load [psf]: 24 24 <br /> Ratio Proposed Loading to Current Loading: 98% OK <br /> The gravity loads and;thus,the stresses of the structural elements,in the area of the <br /> solar array are either decreased or increased by no more than 5%.Therefore,the <br /> requirements of Section 807.4 of the 2015 IEBC are met and the structure is permitted <br /> to remain unaltered. <br />