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STRUCTURAL ANALYSIS FOR NEW PHOTOVOLTAIC SOLAR SYSTEM <br />NOTE: THESE CALCULATIONS ARE BASED ON INFORMATION AND MEASUREMENTS PROVIDED BY THE CONTRACTOR FROMHIS SITE INSPECTION. <br />3 Analysis of Existing Rafter Capacity:PV SOLAR ARRAY: YAM RESIDENCE4021 MARY CIRCLE, SANTA ANA, CA 92703 <br />Rafter Loads:Solar system dead load = 1142 lbs /30 lag bolts total =38.1 lbs at each lag boltExisting roof dead load =16 psfSnow load = 0 psfRoof live load =20 psfWind load = 109.7 lbs,564.0 lbsRafter span =15.0 ft <br />Load Combinations That Apply:#1: D + Lr or S = 16 psf +38.1 lbs at each lag bolt +20.0 psf#2: D + 0.75(0.6W) + 0.75(Lr or S) = (16 psf +38.1 lbs at each lag bolt) + (0.75 (0.6)109.7 lbs at each lag bolt) + (0.75 (20 psf))#3: 0.6D + 0.6W = 0.6 (16 psf + 38.1 lbs at each lag bolt) - (0.6)564.0 lbs at each lag bolt <br />Calculated Maximum Bending Moment:#1:1012.5 ft/lbs +142.8 ft/lbs = 1155.3 ft/lbs[(36 psf) (15 ft^2)] / 8 = 1012.5 ft/lbs[(38.07 lbs) (15.0 ft)] / 4 =142.76 ft/lbs#2:450.0 ft/lbs +142.8 ft/lbs +185.1 ft/lbs +421.9 ft/lbs =1199.7 ft/lbs[(16 psf) (15 ft^2)] / 8 = 450.0 ft/lbs[(38.07 lbs) (15.0 ft)] / 4 =142.76 ft/lbs109.7 lbs) (15 ft)] / 4 = 185.1 ft/lbs0.75 [(20 psf) (15 ft^2)] / 8 = 421.9 ft/lbs#3:270.0 ft/lbs +85.7 ft/lbs -1269.0 ft/lbs =-913.4 ft/lbs0.6 [(16 psf) (15 ft^2)] / 8 = 270.0 ft/lbs0.6 [(38.07 lbs) (15.0 ft)] / 4 =85.658 ft/lbs0.6 [(564.0 lbs) (15 ft)] / 4 =1269.0 ft/lbs <br />Section Required:1199.7 ft/lbs (12) (0.7) / 1518 psi = 6.6 cu inSection Provided:3.5 (5.5 ^2) / 6 =17.6 cu in17.6 cu in >6.6 cu in, OK <br />Calculated Deflection:[5(36 psf / 12) (180 in^4)] / [384 (1200000) (48.5 )] =0.70 inAllowable Deflection:180 in / 240 = 0.75 in0.75 in >0.70 in, OK <br />NOTICE: VISION CIVIL ENGINEERING: JENNIFER KEMME, PEANY CHANGES TO OR USES OF THESE DOCUMENTS 12273 11TH STREET, YUCAIPA, CA 92399WITHOUT THE WRITTEN CONSENT OF VISION 909.754.8300,JENKEMME@VISIONCE.COMCIVIL ENGINEERING IS STRICTLY PROHIBITED.RCE 73054, EXP 12/31/24 <br />0.75 [(0.6)( <br />Prepared by JENNIFER KEMME 7/31/2024 Page 2 <br />4021 W Mary Cir <br />9/12/2024