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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 -22 psf, MIN 10 PSF <br />5/8" Ply shtg 1.9 Overhang -27.6 psf <br />Rf Frm'g 2.8 pWLdown =10.1 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 -22 -20.2 psf <br />Zone 2 0.6*3 -27.6 -25.8 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 RAFTERS @ 24" o.c <br />Spacing 2.00 ft Trib panel width = 6 ft <br />E 1500000 psi Fb =900*1.5*1.15 1552.5 psi <br />I 5.4 in^4 MallowWind =1110 ft-lb <br />Span1 6.42 ft MallowLL =867 ft-lb <br />Span2 6.42 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) R2 (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 />1.00 <br />1 0.97 0.97 5.45 208.2 37.1 22 6.0 245.3 202 111.5 33.5 145.0 <br />2 4.58 4.58 1.84 70.3 175.0 22 6.0 245.3 322 111.5 33.5 145.0 <br />8.18 <br />Span 1 Uniform DL 6.42 39.3 39.3 6.1 psf 2.0 12.2 plf 63.1 <br />Span 2 Uniform DL 6.42 39.3 39.3 6.1 psf 2.0 12.2 63.1 <br />Reactions at Span1 317.8 251.3 Negative values are uplift reactions <br />Reactions at Span2 39.3 39.3 <br />Mmaxwindup = 282 ft-lb < 1110 ft-lb OK <br />Mmaxwinddown = 318 ft-lb < 1110 ft-lb OK <br />For DL+LL including the PV system weight point loads w = 60.4 plf P = 33.5 lb <br />Mmax =358 ft-lb < 867 ft-lb OK <br />Deflection Check <br />DDL = 5wL4/(384EI)(5*13.2*6.42^4)*1728 = 0.126 in = L/ 614 OK <br />384*1.5E6*5.4 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Jorge Magallon <br />Guyou Construction, Inc. <br />Doug Engineering <br />5/22/2025 <br />GUC-3060 <br />P = DL+WL <br />(lb)