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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 />CONC. FLAT TILE 9.0 psf 0.6WL Zone 1 and 2e -15.6 psf, MIN 10 PSF <br />5/8" Ply shtg 1.9 Overhang -21.1 psf <br />Rf Frm'g 2.8 pWLdown = 7.7 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 -15.6 -13.8 psf <br />Zone 2 0.6*3 -21.1 -19.3 psf <br />Total DL 18.2 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 7.16 ft MallowLL =867 ft-lb <br />Span2 7.16 ft See below for Wind Uplift loads <br />Span3 0.00 ft due to concentated loads at attachments <br />Span4 0.00 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 />-1.50 <br />1 -0.47 -0.47 7.63 416.0 -25.6 21.1 6.0 390.4 -183 185 55.5 240.5 <br />2 3.45 3.45 3.71 149.5 139.1 15.6 6.0 288.6 516 185 55.5 240.5 <br />3 5.32 5.32 1.84 74.2 214.4 15.6 6.0 288.6 395 185 55.5 240.5 <br />4 9.24 2.08 5.08 204.8 83.8 15.6 6.0 288.6 426 185 55.5 240.5 <br />10.18 <br />Span 1 Uniform DL 7.16 65.3 65.3 9.1 psf 2.0 18.2 plf 116.9 <br />Span 2 Uniform DL 7.16 65.3 65.3 9.1 psf 2.0 18.2 116.9 <br />Reactions at Span1 705.0 393.2 Negative values are uplift reactions <br />Reactions at Span2 270.1 149.1 <br />Mmaxwindup =420 ft-lb < 1110 ft-lb OK <br />Mmaxwinddown =774 ft-lb < 1110 ft-lb OK <br />For DL+LL including the PV system weight point loads w = 70.4 plf P = 55.5 lb <br />Mmax =585 ft-lb < 867 ft-lb OK <br />Deflection Check <br />DDL = 5wL4 /(384EI) (5*18.2*7.16^4)*1728 = 0.268 in = L/ 320.9 OK <br />384*1.5E6*5.4 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Jamie Chavez <br />ParagonSun <br />Doug Engineering <br />1/26/2023 <br />PGS-1264 <br />P = DL+WL <br />(lb) <br />1043 W Fairbrook <br />Ln05/19/23