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Check Top Chord of Existing Truss Sep. 29, 2022 13:54 Design Check Calculation Sheet WoodWorks Sizer 2019 (Update 4) Loads: Load Type Distribution Pat- Location [ft] Magnitude Unit tern Start End Start End Roof-DL Dead Full Area No 17.00(24.0") psf Roof-LLR Roof constr. Full Area Yes 20.00(24.0") psf PV1 Dead Point No 1.00 32 lbs PV2 Dead Point No 6.00 32 lbs PV3 Dead Point No 7.50 32 lbs PV4 Dead Point No 12.50 32 lbs Self-weight Dead Full UDL No 1.2 plf Maximum Reactions (lbs) and Bearing Lengths (in) : 1.67' 7.67' 13.67' 18.949' 17.67' Unfactored: Dead 207 306 229 54 Roof Live 184 280 240 80 Factored: Total 391 586 469 134 Bearing: Length 0.50* 0.50* 0.50* 0.50* Min req'd 0.50* 0.50** 0.50* 0.50* *Minimum bearing length setting used: 1/2" for end supports and 1/2" for interior supports **Minimum bearing length governed by the required width of the supporting member. Lumber-soft, D.Fir-L, No.2, 2x4 (1-1/2"x3-1/2") Supports: All - Timber-soft Beam, D.Fir-L No.2 Roof joist spaced at 24.0" c/c; Total length: 19.06'; Clear span(horz): 1.625', 5.938', 5.938', 3.938'; Volume = 0.7 cu.ft.; Slope: 21.0 deg Lateral support: top = continuous, bottom = at all supports; Repetitive factor: applied where permitted (refer to online help); This section PASSES the design code check. Analysis vs. Allowable Stress and Deflection using NDS 2018 : Criterion Analysis Value Design Value Unit Analysis/Design Shear fv* = 75 Fv' = 225 psi fv*/Fv' = 0.33 Bending(+) fb = 874 Fb' = 1941 psi fb/Fb' = 0.45 Bending(-) fb = 1252 Fb' = 1848 psi fb/Fb' = 0.68 Deflection: Interior Dead 0.06 = < L/999 Live 0.11 = L/699 0.32 = L/240 in 0.34 Total 0.17 = L/462 0.43 = L/180 in 0.39 Cantil. Dead -0.02 = L/866 Live -0.10 = L/204 0.18 = L/120 in 0.59 Total -0.13 = L/165 0.24 = L/90 in 0.54 *The effect of point loads within a distance d of the support has been included as per NDS 3.4.3.1 3611 W Lehnhardt Ave12/13/22