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Dong Engineering Inc. <br />ADU <br />524 S.SHAWNEE DR UNIT 2, SANTA ANA, CA 92704 <br />Job #: 240168 <br />Date : 04/22/2024 <br />Plan : 1 <br />BEAM : C1 - C.J. 2X6 DFL#2 @ 16" O.C. <br />Loads(Downward+) <br />Ceiling Joist : (4+10)(1.3) = (DL=5.3PLF; LLr=13.4PLF) form 0 to 15.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 143/143 0 <br />2 143/143 0 <br />USE 2 x 6 <br />Critcal Shear = 142 LB @0' 1.5xV/(F'v x A)= 0.11 <br />F'v = 225, A = 8.25 <br />Critcal Moment = 543 LB-FT @7.62' M/(F'b x S)= 0.51 <br />F'b = 1682, S = 7.56 <br /> Critical Deflection for TL = -0.684 INCH @ 7.63 L/240 = 0.762" <br /> Critical Deflection for LL = -0.488 INCH @ 7.63 L/360 = 0.508" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />15.25' <br />BEAM : C2 - C.J. 2X8 DFL#2 @ 16" O.C. <br />Loads(Downward+) <br />Ceiling Joist : (4+10)(1.3) = (DL=5.3PLF; LLr=13.4PLF) form 0 to 20.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 189/189 0 <br />2 189/189 0 <br />USE 2 x 8 <br />Critcal Shear = 189 LB @0' 1.5xV/(F'v x A)= 0.11 <br />F'v = 225, A = 10.88 <br />Critcal Moment = 958 LB-FT @10.12' M/(F'b x S)= 0.56 <br />F'b = 1552, S = 13.14 <br /> Critical Deflection for TL = -0.928 INCH @ 10.12 L/240 = 1.012" <br /> Critical Deflection for LL = -0.663 INCH @ 10.12 L/360 = 0.675" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />20.25' <br />Page 19 of 21 <br />524 S Shawnee Dr & <br />Unit# 22/7/2025