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1 <br /> Beam/Top Chord Check Lumber:DF-L No. 2 <br /> Moment Demand <br /> Span: 1 1 2 1 1 Orientation j I (ft) p,(Ibs) <br /> Lenght(ft) :1 7.5 1 7.5 1 1 4.6 -493 <br /> Portrait 2 8.5 -493 <br /> 3 10.0 -493 <br /> Portrait <br /> Linear Dead Load wd= 26 plf 4 13.9 -493 <br /> Wind Load, Portrait UL= -493 Ibs <br /> Wind Load, Landscape Uw= -296 Ibs <br /> #of Attachment per Rafter NA= 4 <br /> M(x)=Rt(x—Li)—Pj(x-1j)—wdxz2 <br /> 1000 <br /> 500 ....... ... .. ............ ...... ............_._...... <br /> 0 i i <br /> 0;0 50 10.0 15.0 20.0 <br /> 0 <br /> -500 <br /> -1000 i. ............ ..............4........:...... ........:._.......:............................................................. <br /> ?......................... <br /> Length x(ft) <br /> Ma, Moment <br /> Dead 250 lb-ft <br /> Dead+Wind 844 lb-ft <br /> Dead+Snow 250 lb-ft <br /> Moment Capacity Framing Member Size 2x4 Lumber Grade: DF-L No.2 <br /> CM= 1 Ct= 1 Cr= 1.15 CF= 1.5 fb= 900 psi Ct<,and C;are not applicable <br /> Breadth b= 1.50 in <br /> Depth d= 3.50 in <br /> Section Modulus SX =bd2/6= 3.06 in' <br /> Bending Stress Capacity Fb= CM*Ct*Cr*CF*fb= 1553 psi Table 4.3.1 NDS 2015 <br /> Co Ft;=Co*F Ma*SX ASD Load Design Bending DCR <br /> Dead 0.9 1397 psi 981 psi D 981 psi 0.70 OKAY <br /> Dead+Wind 1.6 2484 psi 3308 psi .6W+.6D 1985 psi 0.80 OKAY <br /> Dead+Snow 1.15 1785 psi 981 psi D+S 981 psi 0.55 OKAY <br /> Deflection Limit E= 1600 ksi 1= 5.36 in' <br /> Transient Deflection 0.298 in <br /> Transient Deflection Allowed 302 > 180 [OKAY] <br /> Total Deflection 0.642 in <br /> Total Deflection Allowed 140 > 120 [OKAY] <br />