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Project: William Wulfert-- Job M 20-02920 <br /> PP , Date: 3/27/2020 Engineer: TH <br /> Gravity Loading <br /> 7-3 <br /> T Roof Snow Load Calculations <br /> Ground Snow Load <br /> Ce=Exposure Factor= 0.9 (ASCE7-Table 7-2) <br /> - .S_ - al_Factor= —' 11 (ASCE7-Table 7-3) <br /> _,__.._- --- <br /> I=Importance Factor= 1 <br /> Pf-0.7 Ce Ct I Pg psf..:..::._.. _ (ASCE7 Eq 7 1) <br /> where pg 5 20 psf,Pf min=I x pg= N/A <br /> -where pg>20 psf,Pf min 20 x I — N%A . <br /> [Per ASCE 7=10,minimum values of Pf-shall apply to hip-and gable`roofs with slopes;less a <br /> [than 15°4.- <br /> Therefore,pf=Flat Roof Snow Load= psf <br /> ps=C,pf (ASCE7-Eq 7-2) <br /> Cs=Slope Factor= 1.000 ARRAY 1 <br /> Cs=Slope Factor= 1.000 ARRAY 2 <br /> Ps=Sloped-Roof Snow Load= . - 0.0 psf' ;ARRAY 1 <br /> I P_s.=S_I_oped Roof Snow Load= O.O�psf ARRAY 2 <br /> Load=-3 psf(Per Sunrun.Inc.)—~ `—___. <br /> Roof Live Load= 19.87 psf ARRAY I <br /> Rooftive Load= 19.87 psf ARRAY 2 <br /> Note:Roof live load is removed in area's covered by PV array. <br /> —� Roof-Dead LOad.ARRAY 1: <br /> _ Composition_Shingle _ _ _ 2.0_0 l__ <br /> Roof Plywood�- —_� _ � ry1.50.__: _v <br /> 2x4_Top Chords @ 24"o.c. _ �0.48 <br /> _VaultedCeilin - Y :~- ~- _ _ O,OO,f.__: :Ceiling Not Vaulted <br /> Miscellaneous 0.02 <br /> i Total Roof DL ARRAY 1 - 4.0 0#_ <br /> DL Adjusted to 19 Degree Slope 4.2 psf <br /> Roof Dead:LoadrARRAY 2 <br /> Composition Shingleoof 2.00 <br /> Roof wood. .—. <br /> _ Y <br /> _ 2x4 Top_Chords_@ 24"o.c. _ 0.48 <br /> (� VaultedCeiling 0.00 — _ ;Ceiling Not Vaulted <br /> Miscellaneous 0.02 <br /> Total Roof DL ARRAY 2 40 psf, . i <br /> DL Adjusted to 19 Degree Slope 4.2 psf <br /> 2 of 6 <br />