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Dong Engineering Inc. <br />ADDITION + ADU <br />5121 W.ROBERTS DR & #2, SANTA ANA, CA 92704 <br />Job #: 240056 <br />Date : 06/21/2024 <br />Plan : 1 <br />BEAM : 3 - CLG AT BEDROOM <br />Loads(Downward+) <br />Beam Weight 10.1 plf from 0 ft to 11.75 ft <br />Ceiling Joist DL: (4)(1.3) = (DL=5.3PLF) form 0 to 11.75 <br />Point load @ 6.75 : Load from beam 1 at Support 2(P1) <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 815/815 0 <br />2 1069/1068 0 <br />USE 6 x 8 <br />Critcal Shear = -1068 LB @11.75' 1.5xV/(F'v x A)= 0.18 <br />F'v = 212, A = 41.25 <br />Critcal Moment = 5149 LB-FT @6.75' M/(F'b x S)= 0.71 <br />F'b = 1688, S = 51.56 <br /> Critical Deflection for TL = -0.332 INCH @ 6 L/240 = 0.588" <br /> Critical Deflection for LL = -0.194 INCH @ 6 L/360 = 0.392" <br />1 2 <br />P1 <br />Moment <br />Shear <br />Deflection <br />11.75' <br />BEAM : 4 - DROP @ (E) PATIO <br />Loads(Downward+) <br />Beam Weight 7.4 plf from 0 ft to 18 ft <br />Roof Rafter: (11+20)(6) = (DL=66PLF; LLr=120PLF) form 0 to 18 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 740/740 0 <br />2 2182/2182 0 <br />3 559/558 0 <br />USE 6 x 6 <br />Critcal Shear = -1145 LB @9.75' 1.5xV/(F'v x A)= 0.26 <br />F'v = 212, A = 30.25 <br />Critcal Moment = -1974 LB-FT @9.75' M/(F'b x S)= 0.5 <br />F'b = 1688, S = 27.73 <br /> Critical Deflection for TL = -0.164 INCH @ 4.25 L/240 = 0.488" <br /> Critical Deflection for LL = -0.102 INCH @ 4.25 L/360 = 0.325" <br />1 2 3 <br />Moment <br />Shear <br />Deflection <br />9.75'8.25' <br />17 of 44 <br />FLOOD ZONE - 5121 W <br />Roberts Dr & #23/19/2025