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SHEET: 9 OF 10 <br />DATE: <br />DE JOB NO.: <br />CHECK SCREW ATTACHMENTS FOR WIND UPLIFT <br />Pwuplift = 308.3 lb 5/16" Lag with min 2.5" penetration for each attachment <br />Table 12.2A - NDS - Lag Screw Withdrawal Values <br />For 5/16" Lag into .5G wood 266 lb <br />Allowable wind load = 1.6*2.5*266 1064lb > 308.3 lb OK <br />CHECK SCREW ATTACHMENTS FOR SHEAR DUE TO SEISMIC Fp <br />Fp = 34.63 lb <br />Roof slope/module tilt 27deg <br />Shear = Fp*cos(27 ) = 30.9 lb Fp sin(ang) <br />Tension = Fp*sin(27 ) = 15.7lb <br />Fp cos(ang) <br />Table 11K - NDS Z =190 lb <br />C D =1.6 ` <br />Z' = Z*CD =304lb >30.86 lb OK Withdrawal capacity W' = 1064lb <br />Interaction Equation ft/Ft+fv/Fv 0.305 +0.102 = 0.407< 1 OK <br />RAIL SPAN CHECK <br />Ironridge Railing Check <br />Load for half a panel = 2.7' <br />WXR10 = 62.1 plf <br />Per the Ironridge Structural Analysis of the Ironridge XR10 Rail <br />for 110 mph and 0 psf snow, the max span for XR10 Ironridge Rails is 79" for Exposure C <br />Use XR10 Rails with a spacing of 48" o.c. max for attachment points. <br />11/2/2022 <br />PGS-1254 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Kevin Trieu <br />ParagonSun <br />Doug Engineering <br />3325 S Baker St <br />01/12/23