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Able Energy <br /> SNOW <br /> Ref ASCE 7-10 Chapter 7 <br /> Balanced/Unbalanced Case <br /> Ground snow load for this application P9 a `� � <br /> Section 7.3 applies,Pf=.7 Ce Ct I Pg <br /> Exposure factor Ce,per table 7.2 Ce= 1 <br /> Thermal factor Ct Ct= 1.2 <br /> Importance factor I pertable 7.4 �_ � <br /> Snow load(P�as per sec 7.3 pf= 42 psf <br /> .5 pf .5Pf= 21 psf <br /> Unobstructed/Slippery Surface? YES <br /> Cs from Figure 7.2 Cs= 1.00 <br /> 2Pf Cs/Ce 2Pf Cs/Ce= 84.0 psf <br /> Ps=CsPf 42.0 psf <br /> Flat Roof Systems <br /> USE CASE A <br /> PS 42 psf <br /> PS Balanced Selected I <br /> Applyin flat roof subcharge tor Ps<20psf Cs x pf 42.0 <=Value <br /> DO NOT USE CASE B for W<20 DOES NOT APPLY <br /> Case B,Unbalanced with W<20ft, roof rafterlgable system <br /> ----_..__ _. -___._. <br /> �X Pg 50 psf <br /> Appl in the Slope Reduction Factor Cs x pf 50.0 psf <br /> DO NOT USE CASE 62 DOES NOT APPLY Case B,Other Unbalanced for W>20ft <br /> 13ft <br /> 12.6 �sf hdb/SQRT(S) 16.8 psf <br /> .3Ps � <br /> �, � psf <br /> Ps max 58.8 psf <br /> Roof Rafter system? Yes <br /> eave to ridge W(ft)= 15.00 <br /> use Case A <br /> Hip or gable Roof? NO <br /> Rise(in) 23.28 DO NOT USE DOES NOT APPLY <br /> Run(in) 139.08 ASCE 7-10 Monoslope <br /> S= 5.974 <br /> e(degrees)= 9.5 f�s/Ce <br /> Unbalanced Load .Spf <br /> Test Cases <br /> e(degrees)= 70.0 <br /> 9 M��(degrees)= 5.17 Eaves Crown Eaves <br /> Unbalanced Analysis? Use case B Balanced Load • ��s��ffig�2 � <br /> b= 20.5 Pf <br /> SQRT(S)= 2.4 <br /> lu(ft)= 20 <br /> hd= 2.00 Eaves Crown Eaves <br /> hdb/SQRT(S)= 16.8 <br /> 8/3 x hd SQRT(S)= 13.0 <br /> 0.3Ps= 12.60 <br /> Sheet 10 <br />