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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: NGUYEN RESIDENCE509 S. STARBOARD STREET, SANTA ANA, CA 92704 <br />Rafter Loads:Solar system dead load = 397 lbs /10 lag bolts total =39.7 lbs at each lag boltExisting roof dead load =14 psfSnow load = 0 psfRoof live load =20 psfWind load = 109.7 lbs,564.0 lbsRafter span =7.0 ft <br />Load Combinations That Apply:#1: D + Lr or S = 14 psf +39.7 lbs at each lag bolt +20.0 psf#2: D + 0.75(0.6W) + 0.75(Lr or S) = (14 psf +39.7 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 (14 psf + 39.7 lbs at each lag bolt) - (0.6)564.0 lbs at each lag bolt <br />Calculated Maximum Bending Moment:#1:208.3 ft/lbs +69.5 ft/lbs = 277.7 ft/lbs[(34 psf) (7 ft^2)] / 8 = 208.3 ft/lbs[(39.7 lbs) (7.0 ft)] / 4 =69.5 ft/lbs#2:85.8 ft/lbs +69.5 ft/lbs +86.4 ft/lbs +91.9 ft/lbs =333.5 ft/lbs[(14 psf) (7 ft^2)] / 8 = 85.8 ft/lbs[(39.7 lbs) (7.0 ft)] / 4 =69.5 ft/lbs109.7 lbs) (7 ft)] / 4 = 86.4 ft/lbs0.75 [(20 psf) (7 ft^2)] / 8 = 91.9 ft/lbs#3:51.5 ft/lbs +41.7 ft/lbs -592.2 ft/lbs =-499.1 ft/lbs0.6 [(14 psf) (7 ft^2)] / 8 = 51.5 ft/lbs0.6 [(39.7 lbs) (7.0 ft)] / 4 =41.7 ft/lbs0.6 [(564.0 lbs) (7 ft)] / 4 =592.2 ft/lbs <br />Section Required:499.1 ft/lbs (12) (0.7) / 1518 psi = 2.8 cu inSection Provided:1.5 (3.5 ^2) / 6 =3.1 cu in3.1 cu in >2.8 cu in, OK <br />Calculated Deflection:[5(34 psf / 12) (84 in^4)] / [384 (1200000) (5.4 )] =0.29 inAllowable Deflection:84 in / 240 = 0.35 in0.35 in >0.29 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 7/24/2024 Page 2 <br />509 S Starboard <br />St-Solar9/16/2024