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Project: Davion Washington -- Job#: 19-11838 <br /> Date: 10/29/2019 Engineer: DW <br /> Gravity Loading <br /> Roof Snow Load Calculations <br /> pg=Ground Snow Load= psf <br /> Ce=Exposure Factor= 0.9 (ASCE7-Table 7-2) . <br /> Ct=Thermal Factor= 1.1 (ASCE7-Table 7-3) <br /> 1=Importance-Factor 1 <br /> pf=0.7 C.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 <br /> than 15-. <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 /> Ps=Sloped Roof Snow Load= 0.-0 psf ARRAY 1 <br /> PV Dead Load=3 psf(Per Sunrurrinc.) <br /> RoofLive`Load= .18.91_ �,_psf_ _;ARRAY 1 <br /> Note:Roof live load is removed in area's covered by PV array. <br /> -- -• _ _-------- --- - <br /> j Roof Dead Load ARRAY-- 1 <br /> Composition Shingle 4.00 <br /> Roof Plywood 1.50 <br /> 2x4 Rafters @ 24"o.c. 0.48 <br /> Vaulted Ceiling 0.00 Ceiling Not Vaulted <br /> Miscellaneous 0.02 <br /> Total Roof DL ARRAY 1 6.0 psf <br /> DL Adjusted to 23 Degree Slope 6.5 psf <br /> 2of5 <br />