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Wood Beam (LRFD) (version 179) — Deck Beam <br />Created with ClearCalcs.com <br />Date:Jul 18, 2025Project:2702 W Aurora St. Santa Ana, CA 92704 <br />Address:Subject: B1 <br />References:NDS 2018 (LRFD) <br />Summary <br />Moment Capacity <br />Shear Capacity <br />Governing Bearing Capacity <br />Minimum Bearing Length (End <br />Supports) <br />Minimum Bearing Length (Int <br />Supports) <br />Governing Live / Short-Term <br />Deflection <br />Governing Live / Short-Term <br />Deflection Ratio <br />Governing Long-Term Deflection <br />Governing Long-Term Deflection <br />Ratio <br />Key Properties <br />Member 4x10 D.Fir-L No. 1 <br />Beam Plan Length <br />Continuous Bracing for Lateral <br />Torsional Buckling <br />Loads <br />Enable Automatic Live Load <br />Patterning? (BETA) <br />Design Conditions <br />Design Code for Load <br />Combinations <br />International Building <br />Code (IBC) 2021 <br />Member Properties <br />Cross-Sectional Area <br />Strong Axis Moment of Inertia <br />Section Modulus <br />Base Allowable Bending Stress <br />Base Allowable Shear Stress <br />Base Perpendicular Compression <br />Allowable Stress <br />True Modulus of Elasticity <br />Apparent Modulus of Elasticity <br />Modulus of Elasticity for <br />Deflections <br />Elastic Modulus (NDS 2018 2.3) <br />Adjusted Modulus of Elasticity <br />Section Bending (NDS 2018 2.3) <br />Size Factor <br />Incising Factor <br />Positive Bending (NDS 2018 2.3) <br />Governing Time Effect Factor for <br />Postive Bending <br />Governing Beam Stability Factor - <br />Positive Bending <br />Adjusted Bending Strength - <br />Positive Bending <br />Negative Bending (NDS 2018 2.3) <br />Governing Time Effect Factor for <br />Negative Bending <br />Governing Beam Stability Factor - <br />Negative Bending <br />Adjusted Bending Strength - <br />Negative Bending <br />Shear Design (NDS 2018 3.4) <br />Governing Time Effect Factor for <br />Shear <br />Adjusted Shear Strength <br />Bearing (NDS 2018 3.10) <br />Base Bearing Strength <br />Comments <br />PASS <br />55%ϕMn=\phi <br />M_n <br />= <br />ϕM =n 7.287.287.28 kip⋅ft\mathrm{kip <br />\cdot <br />ft} <br />kip ⋅ ft <br />51%ϕVn=\phi <br />V_n <br />= <br />ϕV =n 6.516.516.51 kip\mathrm{kip}kip <br />1%ϕRn=\phi <br />R_n <br />= <br />ϕR =n 161161161kip\mathrm{kip}kip <br />ℓb,min,end=\ell_{b,min, <br />end} <br />= <br />ℓ =b,min,end NaNNaNNaNin\mathrm{in}in <br />ℓb,min,int=\ell_{b,min, <br />int} <br />= <br />ℓ =b,min,int 000in\mathrm{in}in <br />9%δST=\delta_{ST} <br />= <br />δ =ST −0.0174-0.0174−0.0174 in\mathrm{in}in <br />(L/)ST=(L/)_{ST} <br />= <br />(L/) =ST 419141914191 <br />7%δLT=\delta_{LT} <br />= <br />δ =LT −0.0206-0.0206−0.0206 in\mathrm{in}in <br />(L/)LT=(L/)_{LT} <br />= <br />(L/) =LT 354535453545 <br />Reactions: <br />DistancefromLeftofBeam(ft) <br />0.0 1.0 2.0 3.0 4.0 5.0 6.0 <br />NoBearingUltMax:3.32kipUltMin:0.299kipD:0.333kipL:1.82kip <br />UltMax:4.04kip-inUltMin:0.364kip-inD:0.405kip-inL:2.22kip-in Bearing:73inUltMax:1.99kipUltMin:0.18kipD:0.2kipL:1.1kip <br />d= <br />9 <br />. <br />2 <br />5 <br />i <br />n <br />b=3.5in <br />PrimaryLoading <br />L =X 6.086.086.08 ft\mathrm{ft}ft <br />Top Braced <br />DistancefromLeftofBeam(ft) <br />0.0 1.0 2.0 3.0 4.0 5.0 6.0 <br />Self-weight <br />0 6.08ft <br />D:7.46plf <br />DeckLoad <br />LW:8ft|D:10psf,L:60psf0 6.08ft <br />D:80plfL:480plf <br />No <br />A=A <br />= <br />A =32.4 in2\mathrm{in^2}in2 <br />Ixx=I_{xx} <br />= <br />I =xx 231231231in4\mathrm{in^4}in4 <br />S=S <br />= <br />S =49.9 in3\mathrm{in^3}in3 <br />Fb=F_b <br />= <br />F =b 100010001000psi\mathrm{psi}psi <br />Fv=F_v <br />= <br />F =v 180180180psi\mathrm{psi}psi <br />Fc⊥=F_{c\perp} <br />= <br />F =c⊥625625625psi\mathrm{psi}psi <br />Etrue=E_{true} <br />= <br />E =true 1.70×1061.70×10^{6}1.70 × 106 psi\mathrm{psi}psi <br />Eapp=E_{app} <br />= <br />E =app 1.70×1061.70×10^{6}1.70 × 106 psi\mathrm{psi}psi <br />E=E <br />= <br />E =1.70 × 106 psi\mathrm{psi}psi <br />E′=E' <br />= <br />E =′1.53×1061.53×10^{6}1.53 × 106 psi\mathrm{psi}psi <br />CF,b=C_{F,b} <br />= <br />C =F ,b 1.21.21.2 <br />C =i,b 111 <br />λb+=\lambda_b^+ <br />= <br />λ =b <br />+0.80.80.8 <br />C =L <br />+111 <br />F =b <br />′+176217621762psi\mathrm{psi}psi <br />λb−=\lambda_b^- <br />= <br />λ =b <br />−0.80.80.8 <br />C =L <br />−0.9940.9940.994 <br />F =b <br />′−175117511751psi\mathrm{psi}psi <br />λv=\lambda_v <br />= <br />λ =v 0.80.80.8 <br />F =v <br />′302302302psi\mathrm{psi}psi <br />Fc⊥′/ <br />Cb=F_{c\perp}'/ <br />C_b <br />= <br />F /C =c⊥′b 629629629psi\mathrm{psi}psi