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Roof Beam[ 2003 International Residential Code (97 NDS) ) Ver: 6.00.62 <br />By:. , Area Home Planners on: 04-16-2007 : 10:44:26 AM <br />Proiecl: NGUYEN BINH - Location: 4' girder truss <br />Summary: <br />3.5 IN x 7,25 IN x 4.0 FT / #2 - Douglas Fir -Larch - Dry Use <br />Section Adequate By: 292.7% Controlling Factor: Area / Depth Required 3.21 In <br />Deflections: <br />Dead Load: <br />DLD= <br />Live Load: <br />LLD= <br />Total Load: <br />TLD= <br />Reactions (Each End): <br />Live Load: <br />LL-Rxn= <br />Dead Load: <br />DL-Rxn= <br />Total Load: <br />TL-Rxn= <br />Bearing Length Required (Beam only, support capacity not checked): <br />BL= <br />Beam Data: <br />Span: <br />L= <br />Maximum Unbraced Span: <br />Lu= <br />Pitch Of Roof: <br />RP= <br />Live Load Deflect. Criteria: <br />U <br />Total Load Deflect. Criteria: <br />U <br />RoofLoadinq: <br />Roof Live Load -Side One: <br />LL1= <br />Roof Dead Load -Side One: <br />DL1= <br />Tributary Width -Side One: <br />TW 1= <br />Roof Live Load -Side Two: <br />LL2= <br />Roof Dead Load -Side Two: <br />DL2= <br />Tributary Width -Side Two: <br />TW2= <br />Roof Duration Factor: <br />Cd= <br />Beam Self Weiqht: <br />BSW= <br />Slope/Pitch Adjusted Lenqths and Loads: <br />Adjusted Beam Lerqth: <br />Ladj= <br />Beam Uniform Live Load: <br />wL= <br />Beam Uniform Dead Load: <br />wD_adj= <br />Total Uniform Load: <br />wT= <br />Properties For: #2- Douglas Fir -Larch <br />Bendinq Stress: <br />Fb= <br />Shear Stress: <br />Fv= <br />Modulus of Elasticity: <br />E_ <br />Stress Perpendicular to Grain: <br />Fc_perp= <br />Adjusted Properties <br />Fb' (Tension): <br />Fb'= <br />Adjustment Factors: Cd=1.15 Cf=1.30 <br />Fv': <br />Adjustment Factors: Cd=1.15 <br />Design Requirements: <br />Conlrollinq Moment: <br />2.0 fl from left support <br />Critical moment created by combining all dead and live loads. <br />Controllinq Shear: <br />Al a distance d from support. <br />Critical shear created by combining all dead and live loads. <br />Comparisons With Required Sections: <br />Section Modulus (Moment): <br />Area (Shear): <br />Moment of Inertia (Deflection): <br />Fv'= <br />0.00 IN <br />0.01 IN = U7411 <br />0.01 IN = U4409 <br />400 LB <br />272 LB <br />672 LB <br />0.31 IN <br />4.0 FT <br />0.0 FT <br />5 : 12 <br />240 <br />180 <br />25.0 PSF <br />15.0 PSF <br />8.0 FT <br />25.0 PSF <br />15.0 PSF <br />0.0 FT <br />1.15 <br />6 PLF <br />4.0 FT <br />200 PLF <br />136 PLF <br />336 PLF <br />900 PSI <br />95 PSI <br />1600000 PSI <br />625 PSI <br />1346 PSI <br />109 PSI <br />M= <br />672 <br />FT -LB <br />V= <br />471 <br />LB <br />Sreq= <br />6.00 <br />IN3 <br />S= <br />30.66 <br />IN3 <br />Areq= <br />6.46 <br />IN2 <br />A= <br />25.38 <br />IN2 <br />Ireq= <br />4.54 <br />IN4 <br />l= <br />111.15 <br />IN4 <br />