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Project:Mike Wilkinson page <br /> Location:4'Roof Bm @ Loft/Kitchen Stairs(4x8 DF2)4x6 DF2 min sin* AmericanHomePlanners <br /> Roof Beam 2812 Colby Avenue of <br /> [2015 International Building Code(2012 NDS)] Everett WA 98201 <br /> 3.5 IN x 7.25 IN x 4.0 FT <br /> #2-Douglas-Fir-Larch-Dry Use StruCalc Version 9.0.2.5 7/12/2018 5:11:56 PM <br /> Section Adequate By: 143.7% <br /> Controlling Factor:Moment <br /> DEFLECTIONS Center LOADING DIAGRAM <br /> Live Load 0.01 IN L/3388 <br /> Dead Load 0.01 in <br /> Total Load 0.02 IN L/2101 <br /> Live Load Deflection Criteria:U240 Total Load Deflection Criteria: L/180 <br /> REACTIONS A a <br /> Live Load 875 lb 875 lb <br /> Dead Load 536 lb 536 lb <br /> Total Load 1411 lb 1411 lb <br /> Bearing Length 0.65 in 0.65 in <br /> BEAM DATA <br /> Span Length 4 ft - --- — -- .- <br /> lb <br /> Unbraced Length-Top 0 ft AA IR <br /> Unbraced Length-Bottom 0 ft <br /> Roof Pitch 0 :12 <br /> Roof Duration Factor 1.15 <br /> ROOF LOADING <br /> MATERIAL PROPERTIES Side One: <br /> #2-Douglas-Fir-Larch Roof Live Load: LL= 25 psf <br /> Base Values Adjusted Roof Dead Load: DL= 15 psf <br /> Bending Stress: Fb= 900 psi Fb'= 1346 psi Tributary Width: TW= 17.5 ft <br /> Cd=1.15 CF=1.30 Side Two: <br /> Shear Stress: Fv= 180 psi Fv'= 207 psi Roof Live Load: LL= 25 psf <br /> Cd=1.15 Roof Dead Load: DL= 15 psf <br /> Modulus of Elasticity: E= 1600 ksi E'= 1600 ksi Tributary Width: TW= 0 ft <br /> Comp.-I-to Grain: Fc-L= 625 psi Fc- L'= 625 psi <br /> Wall Load: WALL= 0 <br /> Controlling Moment: 1411 ft-lb plf <br /> 2.0 ft from left support SLOPE/PITCH ADJUSTED LENGTHS AND LOADS <br /> Created by combining all dead and live loads. Adjusted Beam Length: Ladj= 4 ft <br /> Controlling Shear: 988 lb Beam Self Weight: BSW= 6 plf <br /> At a distance d from support. Beam Uniform Live Load: wL= 438 plf <br /> Created by combining all dead and live loads. Beam Uniform Dead Load: wD_adj= 268 plf <br /> Total Uniform Load: wT= 706 plf <br /> Comparisons with required sections: Read Provided <br /> Section Modulus: 12.58 in3 30.66 in3 <br /> Area(Shear): 7.16 in2 25.38 in2 <br /> Moment of Inertia(deflection): 9.52 in4 111.15 in4 <br /> Moment: 1411 ft-lb 3438 ft-lb <br /> Shear: 988 lb 3502 lb <br /> NOTES <br />