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SHEET: 5 OF 7 <br />DATE: <br />DE JOB NO.: <br />DESIGN LOADS <br />Dead Loads Uplift <br />Roof 0.6WL <br />COMP SHINGLE 4.0 psf 0.6WL Zone 1 and 2e -14.9 psf, MIN 10 PSF <br />5/8" Ply shtg 1.9 Overhang -19.9 psf <br />Rf Frm'g 2.8 pWLdown = 8.3 psf 10 psf, MIN 10 PSF <br />Misc.1.5 Uplift 0.6DL+0.6WL <br />(N) PV System 3.0 Zone 1 0.6*3 -14.9 -13.1 psf <br />Zone 2 0.6*3 -19.9 -18.1 psf <br />Total DL 13.2 psf Downward DL+0.6WL <br />LL 20.0 psf PDL+WL =13.0 psf <br />SNOW 0.0 psf <br />Rafter Check <br />Existing 2x4 TRUSSES @ 24" o.c <br />Spacing 2.00 ft Trib panel width =6 ft <br />E 1500000 psi Fb = 900*1.5*1.15 1553 psi <br />I 5.4 in^4 MallowWind =1110 ft-lb <br />Span1 5.08 ft MallowLL =867 ft-lb <br />Span2 5.08 ft See below for Wind Uplift loads <br />Span3 7.66 ft due to concentated loads at attachments <br />Span4 6.16 ft <br />(Distance <br />to Att. <br />Pts) a b R1 (lb) R 2 (lb <br />Load <br />(psf) <br />Trib W <br />(ft) <br />Wind <br />Uplift <br />(lb) <br />Mmax <br />wind(ft- <br />lb) <br />Wind <br />Down <br />(lb) <br />P = <br />PVDL <br />(lb) <br />10.16 <br />1 10.35 0.19 7.47 357.4 9.1 14.9 6.0 243.0 68 163.1 48.9 212.0 <br />2 13.53 3.37 4.29 205.2 161.2 14.9 6.0 243.0 692 163.1 48.9 212.0 <br />3 15.39 5.23 2.43 116.2 250.2 14.9 6.0 243.0 608 163.1 48.9 212.0 <br />4 18.57 0.75 5.41 258.8 35.9 14.9 6.0 243.0 194 163.1 48.9 212.0 <br />19.50 <br />Span 1 Uniform DL 5.08 31.1 31.1 6.1 psf 2.0 12.2 plf 39.5 <br />Span 2 Uniform DL 5.08 31.1 31.1 6.1 psf 2.0 12.2 39.5 <br />Reactions at Span1 31.1 31.1 Negative values are uplift reactions <br />Reactions at Span2 289.9 67.0 <br />Mmaxwindup =994 ft-lb < 1110 ft-lb OK <br />Mmaxwinddown =1093 ft-lb < 1110 ft-lb OK <br />For DL+LL including the PV system weight point loads w = 60.4 plf P = 48.9 lb <br />Mmax =399 ft-lb < 867 ft-lb OK <br />Deflection Check <br />DDL = 5wL4/(384EI) (5*13.2*5.08^4)*1728 = 0.049 in = L/ 1239.0 OK <br />384*1.5E6*5.4 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Ahmed Mohiuddin <br />Solar Max Renewable Energy Provider, In <br />Doug Engineering <br />8/16/2022 <br />SMX-9441 <br />P = DL+WL <br />(lb) <br />3118 S Diamond St <br />12/13/22