Laserfiche WebLink
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 C fu =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 />-45.55 <br />DF-L No. 2 <br />4 j lj (ft) pd,j  (lbs) pw,j  (lbs) ps,j  (lbs) <br />Portrait <br />1 3.8 35.9 -544 0.0 <br />8.2 35.9 -544 <br />-544 0.0 <br />4 14.2 35.9 -544 0.0 <br />0.0 <br />8.00 8.00 0.00 0.00 1.00 <br />Portrait <br />3 9.8 35.9 <br />10.00 <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 0 0.0 <br />Portrait <br />0 0.0 0.0 0 <br />0.0 <br />20 <br />40 <br />0.0 0.0 0.0 0.0 <br />0 0.0 <br />Portrait <br />0 <br />0.0 20 -304 0 <br />0 <br />0.0 <br />0 <br />3 <br />0 <br />0 <br />0.0 <br />Portrait <br />3 <br />0.0 <br />Portrait <br />0 0.0 0.0 <br />A T (ft 2) <br />11.95 <br />6.6667 <br />pd (lbs) <br />35.85 -544 <br />p w (lbs) ps (lbs) <br />0 <br />14.95 <br />2x4 <br />1.15 1.5 <br />17.00 <br />14.95 <br />17.00 <br />900 <br />1.50 <br />3.50 <br />222 <br />243 <br />222 <br />473 <br />233 <br />233 <br />DCR <br />0.9 1397 psi D 871 psi 0.62 <br />3.06 <br />1553 <br />CD Fb' = C D * F b ASD Load Ma / S x <br />1.15 1785 psi D+S 871 psi 0.49 OKAY <br />OKAY <br />1.25 1941 psi D+Lr 952 psi 0.49 OKAY <br />1.6 2484 psi <br />0.370 <br />260 120 <br />1600 5.36 <br />0.6D+0.6W 1855 psi 0.75 OKAY <br />1.0 1 <br />20 <br />0.00 <br />24 <br />Comp <br />0.315 <br />305 180 <br />1.6 2484 psi D+0.45W+0.75S 912 psi 0.37 OKAY <br />1.6 2484 psi D+0.45W+0.75Lr 912 psi 0.37 OKAY <br />ൌ ሺ െ ሻ െ െ െ <br />‐600.0 <br />‐400.0 <br />‐200.0 <br />0.0 <br />200.0 <br />400.0 <br />600.0 <br />0.000 5.000 10.000 15.000 20.000 <br />1036 W Highland <br />St - 2017628306/30/23