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Dong Engineering Inc. <br />ADU <br />3414 S_TIMBER ST, SANTA ANA, CA 92707 <br />Job #: 250421 <br />Date : 09/17/2025 <br />Plan : 1 <br />BEAM : 7 - CLG AT BEDRM <br />Loads(Downward+) <br />Beam Weight 6.2 plf from 0 ft to 11.25 ft <br />Roof Rafter: (14+20)(5) = (DL=70PLF; LLr=100PLF) form 0 to 11.25 <br />Ceiling Joist DL: (4)(6.5) = (DL=26PLF) form 0 to 11.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 1137/1137 0 <br />2 1137/1137 0 <br />USE 4 x 8 <br />Critcal Shear = 1137 LB @0' 1.5xV/(F'v x A)= 0.3 <br />F'v = 225, A = 25.38 <br />Critcal Moment = 3197 LB-FT @5.75' M/(F'b x S)= 0.85 <br />F'b = 1462, S = 30.66 <br /> Critical Deflection for TL = -0.41 INCH @ 5.5 L/240 = 0.562" <br /> Critical Deflection for LL = -0.203 INCH @ 5.5 L/360 = 0.375" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />11.25' <br />BEAM : 8 - DROP AT PATIO <br />Loads(Downward+) <br />Beam Weight 7.4 plf from 0 ft to 4.75 ft <br />Roof Rafter: (14+20)(4.5) = (DL=63PLF; LLr=90PLF) form 0 to 4.75 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 381/381 0 <br />2 381/381 0 <br />USE 6 x 6 <br />Critcal Shear = 380 LB @0' 1.5xV/(F'v x A)= 0.09 <br />F'v = 212, A = 30.25 <br />Critcal Moment = 451 LB-FT @2.25' M/(F'b x S)= 0.11 <br />F'b = 1688, S = 27.73 <br /> Critical Deflection for TL = -0.015 INCH @ 2.25 L/240 = 0.238" <br /> Critical Deflection for LL = -0.008 INCH @ 2.25 L/360 = 0.158" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />4.75' <br />22 of 32