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38 <br /> --- <br /> WoodWorks® Sizer SOFTWARE FOR WOOD DESIGN <br /> 1 2b Header WoodWorks®Sizer 2019 (Update 4) Page 2 <br /> Analysis vs. Allowable Stress and Deflection using NDS 2018 : <br /> Criterion Analysis Value Design value Unit Analysis/Design <br /> Shear fv = 93 Fv' = 207 psi fv/Fv' = 0.45 <br /> Bending(+) fb = 969 Fb' = 1064 psi fb/Fb' = 0.91 <br /> Dead Defl'n 0.01 = < L/999 <br /> Live Defl'n 0.02 = < L/999 0.17 = L/360 in 0.14 <br /> Total Defl'n 1 0.03 = < L/999 1 0.25 = L/240 in 0.13 <br /> Additional Data: <br /> FACTORS: F/E(psi) CD CM Ct CL CF Cfu Cr Cfrt Ci LC# <br /> Fv' 180 1.15 1.00 1.00 - - - -- 1.00 1.00 2 <br /> Fb'+ 850 1.15 1.00 1.00 0.990 1.100 - 1.00 1.00 1.00 2 <br /> Fcp' 625 - 1.00 1.00 - - - - 1.00 1.00 - <br /> E' 1.6 million 1.00 1.00 - - - 1.00 1.00 2 <br /> Emin' 0.58 million 1.00 1.00 - - - - 1.00 1.00 2 <br /> CRITICAL LOAD COMBINATIONS: <br /> Shear : LC #2 = D + S <br /> Bending(+) : LC #2 = D + S <br /> Deflection: LC #2 = D + S (live) <br /> LC #2 = D + S (total) <br /> Bearing Support 1 - LC #2 = D + S <br /> Support 2 - LC #2 = D + S <br /> D=dead S=snow <br /> All LC's are listed in the Analysis output <br /> Load combinations: ASD Basic from ASCE 7-16 2.4 / IBC 2018 1605.3.1 <br /> CALCULATIONS: <br /> V max = 2432, V design = 2432 lbs; M(+) = 5960 lbs-ft <br /> EIy = 664.44 lb-in^2 <br /> "Live" deflection is due to all non-dead loads (live, wind, snow...) <br /> Total deflection = 1.0 dead + "live" <br /> Lateral stability(+) : Lu = 5' Le = 10'-3.63" RB = 10.7 <br /> Design Notes: <br /> 1. Analysis and design are in accordance with the ICC International Building Code (IBC 2018)and the National Design <br /> Specification (NDS 2018), using Allowable Stress Design (ASD). Design values are from the NDS Supplement. <br /> 2. Please verify that the default deflection limits are appropriate for your application. <br /> 3. Sawn lumber bending members shall be laterally supported according to the provisions of NDS Clause 4.4.1. <br />