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Check Top Chord of Existing Truss Dec. 7, 2022 14:22 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 10.00(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) : 1.5' 8.5' 16.74' 15.5' Unfactored: Dead 145 262 76 Roof Live 192 340 127 Factored: Total 337 602 204 Bearing: Length 0.50* 0.51 0.50* Min req'd 0.50* 0.51** 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: 16.88'; Clear span(horz): 1.5', 6.938', 6.938'; Volume = 0.6 cu.ft.; Slope: 22.0 deg Lateral support: top = continuous, bottom = 2'-0 (in); 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 = 81 Fv' = 225 psi fv/Fv' = 0.36 Bending(+) fb = 1199 Fb' = 1941 psi fb/Fb' = 0.62 Bending(-) fb = 1678 Fb' = 1916 psi fb/Fb' = 0.88 Deflection: Interior Dead 0.09 = L/991 Live 0.21 = L/423 0.50 = L/180 in 0.42 Total 0.31 = L/297 0.75 = L/120 in 0.40 Cantil. Dead -0.04 = L/456 Live -0.15 = L/128 0.22 = L/90 in 0.70 Total -0.19 = L/100 0.32 = L/60 in 0.60 5024 1%2 W 6th St 01/23/23