Laserfiche WebLink
SHEET: 6 OF 7 <br />DATE: <br />DE JOB NO.: <br />CHECK SCREW ATTACHMENTS FOR WIND UPLIFT <br />Pwuplift =245.3 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 1064 lb > 245.3 lb OK <br />CHECK SCREW ATTACHMENTS FOR SHEAR DUE TO SEISMIC Fp <br />Fp = 93.97 lb <br />Roof slope/module tilt 14 deg <br />Shear = Fp*cos( 14 ) = 91.2 lb Fp sin(ang) <br />Tension = Fp*sin( 14 ) = 22.7 lb <br />Fp cos(ang) <br />Table 11K - NDS Z = 190 lb <br />CD = 1.6 ` <br />Z' = Z*CD =304 lb > 91.2 lb OK Withdrawal capacity W' = 1064 lb <br />Interaction Equation ft/Ft+fv/Fv 0.252 + 0.3 = 0.552 < 1 OK <br />RAIL SPAN CHECK <br />K2 Crossrail Railing Check - Gable/Hip Roof <br />Load for half a panel = 2.7' <br />W =57.78 plf <br />Per the K2 Engineering for 95 mph, 0 psf snow, and 20 deg roof slope, the max span <br />for 44X Dual Rail is 82" for Array Interior Panels and 74" for Array Array Edge panels <br />Use K2 44X Dual PV Rails with a spacing of 72" o.c. max for attachment points, typ. <br />5/22/2025 <br />GUC-3060 <br />PROJECT: <br />CLIENT: <br />BY: <br />PV Panels for Jorge Magallon <br />Guyou Construction, Inc. <br />Doug Engineering