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SolarMount Unirac Code-Compliant Installation Manual :1:UNIRAC <br />Table 7. ASCE 7 ASD Load Combinations <br />Description VariaWe Dow.force Case 1 P'i 24,15.11£RI.G&4 . -4 Downib,ke Case 3 unksi08-'tf h - . .180[ij#H*112445 <br />Dead Load <br />Snow Load <br />Design Wind Load <br />Total Design Load <br />D 1.0 x <br />S 1.0 X + <br />Pnet <br />P <br />'i'-px:*A.·2;-1 1../.':/07.'t St <br />h*vrligg 015·x +. *42_12-,4 0.75 x + <br />*.. fl' 4,1, 1,4 AL, I.* 3 '.,1 <br />41-64,3?*12:.i, »7'.t f...4,1 <br />th32%1(%9417.t {?14 i fy'?5 , 5. <br />psf <br />psi <br />1.0 X -psf <br />psf <br />Note: Table to be filled out or atiached for evaluation. <br />Step 2: Determine the Distributed Load on the rail <br />w CpU) <br />Detefmine the Distributed Load. w (pIf),by r[ultiplyingtl'le <br />module length, B (ft), by the Total Design Load, P (>,st) and <br />dividing by two. Use the maximum absolute value of ihe three <br />downforce casesand the Uplift Case. We assume each module <br />is supported by two rails. <br />w =PB/2 <br />w = Distributed Load (pounds per linearfoot, pif) <br />B = Module Length Perpendicular to Rails (ft) <br />P = Total Design Pressure (pounds per square,foot psf) <br />Table i8. L-Foot SolarMount Series Rail Span <br />SM - SolarMount 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 />aUowable spans, L, for each Unirac rail type, SolarMount (SM) <br />ahd SolarMount Heavy Duty (HD);. <br />The L-Foot SolarMount Series Rail Span Tableuses a single <br />L-foot connection to the roof, wall or stand-off. Please refer to <br />the Part III fur more installation information. <br />Span Distributed Load (pouridsmneor tbbil <br />m) 20 25 30 40 50 60 80 100 120 14 <br />2 SM SM <br />2.5 SM SM <br />3 SM SM <br />3.5 SM SM <br />4 SM SM <br />4.5 SM SM <br />5 SM SM <br />5.5 SMr SM <br />6 'SM SM <br />6.5 SM SM <br />7 SM SM <br />75 SM SM <br />8 SM SM <br />8.5 SM SM <br />9 SM SM <br />95 SM SM <br />10 SM SM <br />0 160 180 200 220 240 260 <br />SM SM SM SM SM SM SM SM SM SM SM SM SM SM <br />SM SM SM SM SM SM SM SM SM SM SM 0[1® 0 [XI0 ' <br />SM SM SM SM SM SM SM SM SM HE) HB · [ME ·.I [M®· + [12*CZ <br />SM SM SM SM SM SM SM SM FID HD He 14 0 <br />SM SM SM SM SM SM SM A0 He HB He <br />SM SM SM SM SM SM H0 HB <br />SM SM SM SM SM SM H0 HB H0 <br />SM SM SM SM SM He HE) lip <br />SM SM SM SM SM HB HD <br />SM SM SM SM SM H0 He 9 <br />SMl SM SM SM HB He . <br />SM SM SM SM He HD? <br />SM 94 -91 SM 140 - t#0' <br />SM SM SM H0 HD <br />SM SM HO' HD I HE) <br />SM SM |. **i• HDre:*121 <br />SM [*ffb- -,i •HIp':'··thlp ' 'HD <br />10.5 SM SM SM I +ID +16 948 <br />11 SM _ SM _1- UD-- HD HD HE) <br />It.5 SM 4 HD AD HD HD HI) <br />I 2 SM HD HD HD ' FID FID <br />P./ <br />11