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Beam/ Top Chord Check Lumber: <br />Moment Demand <br /># of Attachment per Rafter N A = Span : Orientation <br />Lenght (ft) : <br />Dead Load Roof Material: Q D = psf <br />Live Load QLr = psf <br />Wind Load p = psf <br />Snow Load QS = psf <br />Rafter Spacing s = in <br />Wind Load, Portrait Portrait UL = <br />Wind Load, Landscape Landscape U W = <br />Linear Dead Load wd = plf <br />Live Load wLr = plf Start ft Start ft <br />End ft End ft <br />Snow Load ws = plf Start ft Start ft <br />End ft End ft <br />Ma, Moment <br />D lb-ft <br />D+Lr lb-ft <br />D+S lb-ft <br />0.6D+0.6W lb-ft <br />D+0.45W+0.75Lr lb-ft <br />D+0.45W+0.75S lb-ft <br />Moment Capacity Framing Member Size Lumber Grade : DF-L No. 2 <br />C M = 1 Ct = 1 Cr= CF = fb = psi Cfu =C i = <br />Breadth b = in <br />Depth d = in <br />Section Modulus Sx = bd 2 / 6 = in3 <br />Bending Stress Capacity Fb = CM * C t * Cr * C F * fb = psi Table 4.3.1 NDS 2015 <br />Deflection Limit E = ksi I = in4 <br />Transient Deflection in <br />Transient Deflection Allowed > [OKAY] <br />Total Deflection in <br />Total Deflection Allowed > [OKAY] <br />1.0 1 <br />20 <br />0.00 <br />16 <br />Comp. <br />0.674 <br />232 180 <br />1.6 1987 psi D+0.45W+0.75S 1104 psi 0.56 OKAY <br />1.6 1987 psi D+0.45W+0.75Lr 1104 psi 0.56 OKAY <br />1.6 1987 psi <br />0.800 <br />195 120 <br />1600 47.63 <br />0.6D+0.6W 1939 psi 0.98 OKAY <br />1.15 1428 psi D+S 638 psi 0.45 OKAY <br />OKAY <br />1.25 1553 psi D+Lr 638 psi 0.41 OKAY <br />DCR <br />0.9 1118 psi D 638 psi 0.57 <br />13.1 <br />1242 <br />CD Fb' = C D * F b ASD Load Ma / S x <br />2x8 <br />1.15 1.2 <br />15.00 <br />11.72 <br />15.00 <br />900 <br />1.50 <br />7.25 <br />698 <br />699 <br />698 <br />2124 <br />1209 <br />1209 <br />0 <br />0.0 <br />0 <br />1.5 <br />0 <br />0 <br />0.0 <br />Portrait <br />1.5 <br />0.0 <br />Portrait <br />0 0.0 0.0 <br />AT (ft2) <br />13.614 <br />9.1498 <br />pd (lbs) <br />40.841 -536 <br />p w (lbs) ps (lbs) <br />0 <br />11.72 26.7 <br />0.0 0.0 0.0 0.0 <br />0 0.0 <br />Portrait <br />0 <br />0.0 27.45 -360 0 <br />0 0.0 <br />Portrait <br />0 0.0 0.0 0 <br />0.0 <br />18.7 <br />1 2 3 4 Eave <br />2 <br />0.0 <br />0.0 0.0 0.0 <br />0.0 <br />0 0.0 0.0 0.0 0.0 <br />0 0.0 0.0 0.0 <br />0.0 <br />0 0.0 0.0 <br />0.0 <br />13.00 0.00 0.00 0.00 2.00 <br />Portrait <br />3 7.3 40.8 <br />14.00 <br />-39.35 <br />DF-L No. 2 <br />4 j lj (ft) pd,j  (lbs) pw,j  (lbs) ps,j  (lbs) <br />Portrait <br />1 2.2 40.8 -536 0.0 <br />5.9 40.8 -536 <br />-536 0.0 <br />4 11.1 40.8 -536 0.0 <br />ൌ ሺ െ ሻ െ െ െ <br />‐500.0 <br />0.0 <br />500.0 <br />1000.0 <br />1500.0 <br />2000.0 <br />2500.0 <br />0.000 2.000 4.000 6.000 8.000 10.000 12.000 14.000 16.000 <br />630 1%2 N Shelton <br />08/09/22