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Dong Engineering Inc. <br />NEW MAIN HOUSE & ADU <br />1834 W.3RD ST, SANTA ANA, CA 92703 <br />Job #: 240051 <br />Date : 01/07/2025 <br />Plan : 1 <br />BEAM : 20 - HDR AT JADU DINING <br />Loads(Downward+) <br />Beam Weight 9.6 plf from 0 ft to 5.25 ft <br />Deck Primary: (13+60)(5.5) = (DL=71.5PLF; LLr=330PLF) form 0 to 3.75 <br />Floor Primary: (13+40)(6.8) = (DL=87.8PLF; LL=270PLF) form 3.75 to 5.25 <br />Exterior Wall: (15)(5.5) = (DL=82.5PLF) form 0 to 3.75 <br />Exterior Wall: (15)(11) = (DL=165PLF) form 3.75 to 5.25 <br />Point load @ 3.75 : Load from beam 16 at Support 2(P1) <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 2176/1916 0 <br />2 3525/3110 0 <br />USE 4 x 12 <br />Critcal Shear = -2875 LB @5.25' 1.5xV/(F'v x A)= 0.61 <br />F'v = 180, A = 39.38 <br />Critcal Moment = 3714 LB-FT @3.75' M/(F'b x S)= 0.55 <br />F'b = 1100, S = 73.83 <br /> Critical Deflection for TL = -0.023 INCH @ 2.75 L/240 = 0.262" <br /> Critical Deflection for LL = -0.01 INCH @ 2.75 L/360 = 0.175" <br />1 2 <br />P1 <br />Moment <br />Shear <br />Deflection <br />5.25' <br />BEAM : 21 - CLG AT ENTRANCE <br />Loads(Downward+) <br />Beam Weight 6.2 plf from 0 ft to 8.25 ft <br />Roof Rafter: (11+20)(2) = (DL=22PLF; LLr=40PLF) form 0 to 8.25 <br />Ceiling Joist DL: (4)(1.3) = (DL=5.3PLF) form 0 to 8.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 303/303 0 <br />2 303/303 0 <br />USE 4 x 8 <br />Critcal Shear = 303 LB @0' 1.5xV/(F'v x A)= 0.08 <br />F'v = 225, A = 25.38 <br />Critcal Moment = 625 LB-FT @4' M/(F'b x S)= 0.16 <br />F'b = 1462, S = 30.66 <br /> Critical Deflection for TL = -0.043 INCH @ 4 L/240 = 0.412" <br /> Critical Deflection for LL = -0.023 INCH @ 4 L/360 = 0.275" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />8.25' <br />Page 33 of 57 <br />1834 W Third St & <br />#2,33/21/2025