Laserfiche WebLink
SHEET: 6 OF 7 <br />DATE: <br />DE JOB NO.: <br />CHECK SCREW ATTACHMENTS FOR WIND UPLIFT <br />Pwuplift =390.4 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 1064 lb > 390.4 lb OK <br />CHECK SCREW ATTACHMENTS FOR SHEAR DUE TO SEISMIC Fp <br />Fp = 51.95 lb <br />Roof slope/module tilt 20 deg <br />Shear = Fp*cos(20 ) = 48.8 lb Fp sin(ang) <br />Tension = Fp*sin(20 ) = 17.8 lb <br />Fp cos(ang) <br />Table 11K - NDS Z =190 lb <br />C D =1.6 ` <br />Z' = Z*CD =304 lb >48.82 lb OK Withdrawal capacity W' = 1064 lb <br />Interaction Equation ft/Ft+fv/Fv 0.384 +0.161 = 0.545 < 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 95 mph and 0 psf snow, the max span for XR10 Ironridge Rails is 88" for Exposure C <br />Use XR10 Rails with a spacing of 72" o.c. max for attachment points. <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 />1043 W Fairbrook <br />Ln05/19/23