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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 : 6 - CLG @ DINING <br />Loads(Downward+) <br />Beam Weight 7.9 plf from 0 ft to 10.75 ft <br />Roof Rafter: (14+20)(6.8) = (DL=94.5PLF; LLr=135PLF) form 0 to 10.75 <br />Ceiling Joist DL: (4)(8.8) = (DL=35PLF) form 0 to 10.75 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 1455/1454 0 <br />2 1455/1454 0 <br />USE 4 x 10 <br />Critcal Shear = 1454 LB @0' 1.5xV/(F'v x A)= 0.3 <br />F'v = 225, A = 32.38 <br />Critcal Moment = 3906 LB-FT @5.25' M/(F'b x S)= 0.69 <br />F'b = 1350, S = 49.91 <br /> Critical Deflection for TL = -0.22 INCH @ 5.25 L/240 = 0.538" <br /> Critical Deflection for LL = -0.108 INCH @ 5.25 L/360 = 0.358" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />10.75' <br />BEAM : 7 - HDR @ LIVING <br />Loads(Downward+) <br />Beam Weight 4.7 plf from 0 ft to 6.25 ft <br />Roof Rafter: (14+20)(6.5~3.5) = (DL=91~49PLF; LLr=130~70PLF) form 0 to 6.25 <br />Exterior Wall: (15)(2) = (DL=30PLF) form 0 to 6.25 <br />Ceiling Joist DL: (4)(0.7) = (DL=2.7PLF) form 0 to 6.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 701/701 0 <br />2 595/595 0 <br />USE 4 x 6 <br />Critcal Shear = 701 LB @0' 1.5xV/(F'v x A)= 0.24 <br />F'v = 225, A = 19.25 <br />Critcal Moment = 1014 LB-FT @3' M/(F'b x S)= 0.47 <br />F'b = 1462, S = 17.65 <br /> Critical Deflection for TL = -0.092 INCH @ 3 L/240 = 0.312" <br /> Critical Deflection for LL = -0.044 INCH @ 3 L/360 = 0.208" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />6.25' <br />20 of 26