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Dong Engineering Inc. <br />2 ADU'S <br />512-514 HUYLARS LN, SANTA ANA, CA 92703 <br />Job #: 250195 <br />Date : 05/21/2025 <br />Plan : 1 <br />BEAM : 8 - HDR @ BEDRM.2 <br />Loads(Downward+) <br />Beam Weight 4.7 plf from 0 ft to 5.25 ft <br />Roof Rafter: (14+20)(8.2) = (DL=115.5PLF; LLr=165PLF) form 0 to 5.25 <br />Ceiling Joist DL: (4)(8.8) = (DL=35PLF) form 0 to 5.25 <br />Exterior Wall: (15)(2) = (DL=30PLF) form 0 to 5.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 919/919 0 <br />2 919/919 0 <br />USE 4 x 6 <br />Critcal Shear = 919 LB @0' 1.5xV/(F'v x A)= 0.32 <br />F'v = 225, A = 19.25 <br />Critcal Moment = 1203 LB-FT @2.5' M/(F'b x S)= 0.56 <br />F'b = 1462, S = 17.65 <br /> Critical Deflection for TL = -0.077 INCH @ 2.5 L/240 = 0.262" <br /> Critical Deflection for LL = -0.036 INCH @ 2.5 L/360 = 0.175" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />5.25' <br />BEAM : C1 - C.J. 2X8 DFL#2 @ 16" O.C. (MAX L=20'-3") <br />Loads(Downward+) <br />Ceiling Joist: (4+10)(1.3) = (DL=5.3PLF; LLr=13.4PLF) form 0 to 20.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 189/189 0 <br />2 189/189 0 <br />USE 2 x 8 <br />Critcal Shear = 189 LB @0' 1.5xV/(F'v x A)= 0.11 <br />F'v = 225, A = 10.88 <br />Critcal Moment = 958 LB-FT @10.12' M/(F'b x S)= 0.56 <br />F'b = 1552, S = 13.14 <br /> Critical Deflection for TL = -0.928 INCH @ 10.12 L/240 = 1.012" <br /> Critical Deflection for LL = -0.663 INCH @ 10.12 L/360 = 0.675" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />20.25' <br />21 of 26