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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 RESIDENCE3002 W. CUBBON STREET, SANTA ANA, CA 92705 <br />Rafter Loads:Solar system dead load = 1215 lbs /28 lag bolts total =43.4 lbs at each lag boltExisting roof dead load =12 psfSnow load = 0 psfRoof live load =20 psfWind load = 117.8 lbs,606.0 lbsRafter span =7.0 ft <br />Load Combinations That Apply:#1: D + Lr or S = 12 psf +43.4 lbs at each lag bolt +20.0 psf#2: D + 0.75(0.6W) + 0.75(Lr or S) = (12 psf +43.4 lbs at each lag bolt) + (0.75 (0.6)117.8 lbs at each lag bolt) + (0.75 (20 psf))#3: 0.6D + 0.6W = 0.6 (12 psf + 43.4 lbs at each lag bolt) - (0.6)606.0 lbs at each lag bolt <br />Calculated Maximum Bending Moment:#1:196.0 ft/lbs +75.9 ft/lbs = 271.9 ft/lbs[(32 psf) (7 ft^2)] / 8 = 196.0 ft/lbs[(43.39 lbs) (7.0 ft)] / 4 =75.9 ft/lbs#2:73.5 ft/lbs +75.9 ft/lbs +92.8 ft/lbs +91.9 ft/lbs =334.1 ft/lbs[(12 psf) (7 ft^2)] / 8 = 73.5 ft/lbs[(43.39 lbs) (7.0 ft)] / 4 =75.9 ft/lbs117.8 lbs) (7 ft)] / 4 = 92.8 ft/lbs0.75 [(20 psf) (7 ft^2)] / 8 = 91.9 ft/lbs#3:44.1 ft/lbs +45.6 ft/lbs -636.3 ft/lbs =-546.6 ft/lbs0.6 [(12 psf) (7 ft^2)] / 8 = 44.1 ft/lbs0.6 [(43.39 lbs) (7.0 ft)] / 4 =45.6 ft/lbs0.6 [(606.0 lbs) (7 ft)] / 4 =636.3 ft/lbs <br />Section Required:546.6 ft/lbs (12) (0.7) / 1518 psi = 3.0 cu inSection Provided:1.5 (3.5 ^2) / 6 =3.1 cu in3.1 cu in >3.0 cu in, OK <br />Calculated Deflection:[5(32 psf / 12) (84 in^4)] / [384 (1200000) (5.4 )] =0.27 inAllowable Deflection:84 in / 240 = 0.35 in0.35 in >0.27 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 10/3/2023 Page 2 <br />3002 W Cubbon St - <br />2018128112/6/2023