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Dong Engineering Inc. <br />ADU <br />3205 S.DEEGAN DR, SANTA ANA, CA 92704 <br />Job #: 240165 <br />Date : 04/15/2024 <br />Plan : 1 <br />BEAM : 5 - HDR AT BEDROOM <br />Loads(Downward+) <br />Beam Weight 4.7 plf from 0 ft to 3.25 ft <br />Roof Primary: (15+20)(1.3) = (DL=20PLF; LLr=26.7PLF) form 0 to 3.25 <br />Exterior Wall: (15)(4) = (DL=60PLF) form 0 to 3.25 <br />Point load @ 2.5 : Load from beam 2 at Support 2(P1) <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 648/648 0 <br />2 1737/1737 0 <br />USE 4 x 6 <br />Critcal Shear = -1737 LB @3.25' 1.5xV/(F'v x A)= 0.6 <br />F'v = 225, A = 19.25 <br />Critcal Moment = 1271 LB-FT @2.5' M/(F'b x S)= 0.59 <br />F'b = 1462, S = 17.65 <br /> Critical Deflection for TL = -0.022 INCH @ 1.75 L/240 = 0.162" <br /> Critical Deflection for LL = -0.011 INCH @ 1.75 L/360 = 0.108" <br />1 2 <br />P1 <br />Moment <br />Shear <br />Deflection <br />3.25' <br />BEAM : 6 - HDR AT BEDROOM <br />Loads(Downward+) <br />Beam Weight 4.7 plf from 0 ft to 6.25 ft <br />Roof Primary: (15+20)(5.2) = (DL=78.8PLF; LLr=105PLF) form 0 to 6.25 <br />Exterior Wall: (15)(2) = (DL=30PLF) form 0 to 6.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 683/683 0 <br />2 683/683 0 <br />USE 4 x 6 <br />Critcal Shear = -682 LB @6.25' 1.5xV/(F'v x A)= 0.23 <br />F'v = 225, A = 19.25 <br />Critcal Moment = 1064 LB-FT @3' M/(F'b x S)= 0.49 <br />F'b = 1462, S = 17.65 <br /> Critical Deflection for TL = -0.096 INCH @ 3 L/240 = 0.312" <br /> Critical Deflection for LL = -0.046 INCH @ 3 L/360 = 0.208" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />6.25' <br />Page 17 of 20 <br />3205 S Deegan Dr <br />#23/10/2025