Laserfiche WebLink
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, 2e, and 2r -19.9 psf, MIN 10 PSF <br />5/8" Ply shtg 1.9 Overhang -24.9 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 -19.9 -18.1 psf <br />Zone 2 0.6*3 -24.9 -23.1 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 2x6 RAFTERS @ 24" o.c <br />Spacing 2.00 ft Trib panel width =6 ft <br />E 1500000 psi Fb = 900*1.3*1.15 1346 psi <br />I 20.8 in^4 MallowWind =1356 ft-lb <br />Span1 7.41 ft MallowLL =1060 ft-lb <br />Span2 7.41 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 />-0.50 <br />1 0.50 0.50 6.91 317.8 23.0 19.9 6.0 340.8 159 171.3 51.4 222.6 <br />2 4.21 4.21 3.20 147.2 193.5 19.9 6.0 340.8 620 171.3 51.4 222.6 <br />3 6.21 6.21 1.20 55.3 285.5 19.9 6.0 340.8 343 171.3 51.4 222.6 <br />4 9.92 2.51 4.90 225.5 115.3 19.9 6.0 340.8 565 171.3 51.4 222.6 <br />10.92 <br />Span 1 Uniform DL 7.41 45.3 45.3 6.1 psf 2.0 12.2 plf 84.0 <br />Span 2 Uniform DL 7.41 45.3 45.3 6.1 psf 2.0 12.2 84.0 <br />Reactions at Span1 565.7 547.4 Negative values are uplift reactions <br />Reactions at Span2 270.9 160.6 <br />Mmaxwindup =702 ft-lb < 1356 ft-lb OK <br />Mmaxwinddown =741 ft-lb < 1356 ft-lb OK <br />For DL+LL including the PV system weight point loads w = 60.4 plf P = 51.4 lb <br />Mmax =547 ft-lb < 1060 ft-lb OK <br />Deflection Check <br />DDL = 5wL4 /(384EI) (5*13.2*7.41^4)*1728 = 0.057 in = L/ 1549.2 OK <br />384*1.5E6*20.8 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Fidel Zamudio <br />SunLux <br />Doug Engineering <br />10/1/2021 <br />SLE-3970 <br />P = DL+WL <br />(lb) <br />2230 N Tamy Ln <br />11/01/21