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SolarMount _Unirac Code-CompliantInstallation Manual :i: UNI RAC
<br />Table 7. ASCE 7 ASD Load Combinations
<br />Descr#)don Veriable : - DownjErceCce 1 aa·.tfi=j«45%227·3 - '*mh.0.+p-i , "·, 73.JmpiESIER un'*
<br />, . ··.··. NAO?Rite.49{·Ef..M --i·>o··x '-J···'0·.j}@46'--i4.4,"4:% psfDead Load D » 1.0 x :.7' I .
<br />Snow Load
<br />Design Wind Load Piet !- , .· -. · " '·, · · -·- . -,G•·'1.6:0314-, :.'.e%4»,131.IM-' 6.75 x· .9- ·-t· j'···r·o···4:,i&<4 ..· .g.- : .....
<br />Total Design Load P 2,-2 95 -.-·:;:.II:--321**2314.·t.$*-1:#· 4.·i·f€ifti*?&412 psf
<br />Note: Table to be filred' out or attached for evaluation.
<br />Step 2: Determine the Distributed Load on the rail
<br />w CPU)
<br />Determine the Discributed Load, w (plj), by mu'ltiplying the
<br />module length, B (ft), by the 'lbtal Design Load, P Opsj) and
<br />dividing by two. Use the maximum absolute value of the three
<br />downforce cases and the Uplift Case. We assume each module
<br />is supported by two rails.
<br />w = PB/2
<br />w = Distributed Load (pounds,per linearfoot, plf)
<br />B = Module Length:Petpendicular to Rails (ft)
<br />P = TotaIDesignPressure *oundspersquarefoot, psD
<br />Table 8. 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, 8, from Part II, Step 2, look up the
<br />allowable.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 In for more installation information.
<br />Span Distributed load (Doundillincor food
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