Laserfiche WebLink
SolarMount Unirac Code-Compliant Installation Manual GUN\RAC <br />Table 7. ASCE 7 ASD Load Combinations <br />Description Voriabe Downfoce Case /Downtbme Case 2 DOwnfbrce Case 3 Opnft Inks <br />Dead Load D 1.0 x 1.0 X 1.0 X 0.6 x psf <br />Snow Load S 1.0 x +0.75 x + psT <br />Design Wind Load Pnet 1.0 X +0.75 x +1.0 x - psf <br />Total Design Load P psf <br />Note: Table to be filled out or attached for evaluation. <br />Step 2: Determine the Distributed Load on the rail <br />w (plf) <br />Determine the Distributed Load, w (plf), by multiplying the <br />module length, B (ft), by the 7btal Design Load, P 01,0 and <br />dividing by two. Use the maximum absolute value of the three <br />downforce eases and the Uplift Case. We assume each module <br />is supported by two rails. <br />w = PB/2 <br />w = Distributed Load (pounds per linear foot, pif) <br />B = Module Length Perpendicular to Rails (ft) <br />P = Total Design Pressure (pounds per square.foot, psf) <br />Table 8. L-Foot SolarMownt'Series Rail Span <br />SM - Solar-Mount HD - SolarMount Heavy Duty <br />Step 3: Determine Rail Span/L-Foot Spacing <br />Using the distributed load, w, from Part,II, Step 2, look up the <br />anoivable spans, L, for each Unirac rail type, SolarMount (SM) <br />and SolarMount Heavy Duty (HD). <br />The L-Foot SolarMount Series Rail Span Table uses a single <br />L-foot connection to the roof, wall or stand-off. Please refer to <br />the Part III for more installation information. <br />Spon D-istributed Ladd (»unddlineor foot) <br />@ 20 25 30 40 50 60 80 100 120 140 160 180 200 220 240 260 <br />2 SM SM SM SM SM SM 'SM SM SM SM SM SM SM <br />25 SM SM SM SM SM SM SM SM SM SM SM SM SM <br />3 SM SM SM SM SM SM SM SM SM SM SM HD HD <br />3.5 SM SM SM SM SM SM SM SM SM SM 2 -AD- HD HD <br />4 SM SM SM SM SM SM SM 91 -iM HO HD HD HD <br />4.5 SM SM SM SM SM SM SM SM ' HD HD HD <br />5 SM SM SM SM SM SM SM SM 1 HD MD HD <br />5.5 SM SM SM SM SM SM SM HD HD HD_J <br />SM SM SM <br />HD HD HD <br />HD HD HD <br />HD 1 <br />6 SM SM SM SM SM SM SM HD HD <br />6.5 SM SM SM SM SM SM SM HD HD <br />7 SM SM SM SM SM SM j HD HD <br />7.5 SM SM SM SM SM SM HD HD <br />8 SM SM SM SM SM SM HD HD <br />8.5 SM SM SM SM 2 1 10 <br />9 SM SM SM SM HD HD HD <br />9.5 SM SM SM SM HD HD HD <br />10 SM SM SM 1 HD HD HD HD <br />10.5 SM SM SM HD HD HD <br />11 SM _ _SM * HD HD HD HD <br />11.5 SM HD HD HD HD HD <br />I 2 SM ' HD HD HD HD HD <br />p'Se <br />11