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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 />ROLLED COMP 4.0 psf 0.6WL Zone 3 -13.43 psf, MIN 10 PSF <br />5/8" Ply shtg 1.9 <br />Rf Frm'g 2.8 <br />pWLdown =6.4 psf 10 psf, MIN 10 PSF <br />Misc. 1.5 Uplift 0.6DL+0.6WL <br />(N) PV System 3.0 Zone 3 0.6*3 -13.4268 -11.6 psf <br />Total DL 13.2 psf Downward DL+0.6WL <br />LL 20.0 psf <br />PDL+WL =13.0 psf <br />SNOW 0.0 psf <br />Rafter Check <br />Existing 2x4 RAFTERS @ 16" o.c <br />Spacing 1.33 ft Trib panel width = 5.33 ft <br />E 1500000 psi <br />Fb =900*1.5*1.15 1553 psi <br />I5.4in^4MallowWind =1110 ft-lb <br />Span1 6.92 ft <br />MallowLL =867 ft-lb <br />Span2 6.92 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 1.99 1.99 4.93 144.0 58.1 13.427 5.3 202.2 287 150.6 45.2 195.7 <br />2 5.63 5.63 1.29 37.7 164.5 13.427 5.3 202.2 212 150.6 45.2 195.7 <br />3 7.62 0.70 6.22 181.7 20.5 13.427 5.3 202.2 127 150.6 45.2 195.7 <br />4 11.26 4.34 2.58 75.4 126.8 13.427 5.3 202.2 327 150.6 45.2 195.7 <br />12.25 <br />Span 1 Uniform DL 6.92 28.2 28.2 6.1 psf 1.3 8.2 plf 48.8 <br />Span 2 Uniform DL 6.92 28.2 28.2 6.1 psf 1.3 8.2 48.8 <br />Reactions at Span1 210.0 250.9 Negative values are uplift reactions <br />Reactions at Span2 103.6 155.0 <br />Mmaxwindup = 241 ft-lb < 1110 ft-lb OK <br />Mmaxwinddown = 417 ft-lb < 1110 ft-lb OK <br />For DL+LL including the PV system weight point loads w = 40.3 plf P = 45.2 lb <br />Mmax =315 ft-lb < 867 ft-lb OK <br />Deflection Check <br />DDL = 5wL4/(384EI)(5*13.2*6.92^4)*1728 = 0.113 in = L/ 735 OK <br />384*1.5E6*5.4 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Robert Dominguez <br />Guyou Construction, Inc. <br />Doug Engineering <br />11/26/2024 <br />GUC-3004 <br />P = DL+WL <br />(lb) <br />1422 W Marion <br />Way1/24/2025