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JOB NO.:U3594.0103.251 <br />SUBJECT:LOAD COMPARISON <br />® <br />Roof 1 <br />PROJECT:Suzanne Stauduhar Residence <br />Summary of Loads <br />Existing With PV Array <br />D [psf]15 18 <br />Lr [psf]20 0 <br />S [psf]35 30 <br />Maximum Gravity Loads: <br />Existing With PV Array <br />(D + Lr) / Cd [psf]28 20 ASCE 7-16, Section 2.4.1 <br />(D + S) / Cd [psf]43 42 ASCE 7-16, Section 2.4.1 <br />Maximum Gravity Load [psf]:43 42 <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%. Stress decreases or <br />increases of no more than 5% are considered acceptable. Therefore, the structure is <br />permitted to remain unaltered. <br />(Cd = Load Duration Factor = 0.9 for D, 1.15 for S, and 1.25 for Lr)