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Dong Engineering Inc. <br />ADU <br />3109 S.ARTESIA ST UNIT #2, SANTA ANA, CA 92704 <br />Job #: 240517 <br />Date : 10/21/2024 <br />Plan : 1 <br />BEAM : 1 - CLG @ LIVING/KITCHEN <br />Loads(Downward+) <br />Beam Weight 6.2 plf from 0 ft to 10.75 ft <br />Roof Vaulted: (13+20)(4.8) = (DL=61.8PLF; LLr=95PLF) form 0 to 10.75 <br />Roof Primary: (15+20)(0.7) = (DL=10PLF; LLr=13.3PLF) form 0 to 10.75 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 1001/1001 0 <br />2 1001/1001 0 <br />USE 4 x 8 <br />Critcal Shear = 1000 LB @0' 1.5xV/(F'v x A)= 0.26 <br />F'v = 225, A = 25.38 <br />Critcal Moment = 2688 LB-FT @5.5' M/(F'b x S)= 0.72 <br />F'b = 1462, S = 30.66 <br /> Critical Deflection for TL = -0.314 INCH @ 5.25 L/240 = 0.538" <br /> Critical Deflection for LL = -0.183 INCH @ 5.25 L/360 = 0.358" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />10.75' <br />BEAM : 2 - RIDGE @ LIVING ROOM & KITCHEN <br />Loads(Downward+) <br />Beam Weight 15.4 plf from 0 ft to 17.5 ft <br />Roof Vaulted: (13+20)(9.5) = (DL=123.5PLF; LLr=190PLF) form 0 to 17.5 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 2856/2856 0 <br />2 2856/2856 0 <br />USE 6 x 12 <br />Critcal Shear = 2856 LB @0' 1.5xV/(F'v x A)= 0.32 <br />F'v = 212, A = 63.25 <br />Critcal Moment = 12496 LB-FT @8.75' M/(F'b x S)= 0.73 <br />F'b = 1688, S = 121.23 <br /> Critical Deflection for TL = -0.618 INCH @ 8.75 L/240 = 0.875" <br /> Critical Deflection for LL = -0.355 INCH @ 8.75 L/360 = 0.583" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />17.5' <br />Page 16 of 21