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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 : 1 - HIP @ LIVING ROOM <br />Loads(Downward+) <br />Beam Weight 5.5 plf from 0 ft to 12.25 ft <br />Roof Rafter: (11+20)(8~0) = (DL=88~0PLF; LLr=160~0PLF) form 0 to 12.25 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 1046/1046 0 <br />2 540/540 0 <br />USE 2-2 x 8 <br />Critcal Shear = 1046 LB @0' 1.5xV/(F'v x A)= 0.31 <br />F'v = 225, A = 22.5 <br />Critcal Moment = 2488 LB-FT @5.25' M/(F'b x S)= 0.72 <br />F'b = 1462, S = 28.12 <br /> Critical Deflection for TL = -0.391 INCH @ 6 L/240 = 0.612" <br /> Critical Deflection for LL = -0.242 INCH @ 6 L/360 = 0.408" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />12.25' <br />BEAM : 2 - VALLEY @ BEDROOM <br />Loads(Downward+) <br />Beam Weight 5.5 plf from 0 ft to 10 ft <br />Roof Rafter: (11+20)(0.8~4.2) = (DL=8.2~46.8PLF; LLr=15~85PLF) form 0 to 10 <br />Roof Rafter: (11+20)(0~3.5) = (DL=0~38.5PLF; LLr=0~70PLF) form 0 to 10 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 505/505 0 <br />2 867/867 0 <br />USE 2-2 x 8 <br />Critcal Shear = -867 LB @10' 1.5xV/(F'v x A)= 0.25 <br />F'v = 225, A = 22.5 <br />Critcal Moment = 1743 LB-FT @5.75' M/(F'b x S)= 0.51 <br />F'b = 1462, S = 28.12 <br /> Critical Deflection for TL = -0.182 INCH @ 5.25 L/240 = 0.5" <br /> Critical Deflection for LL = -0.113 INCH @ 5.25 L/360 = 0.333" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />10' <br />Page 16 of 21 <br />524 S Shawnee Dr & <br />Unit# 22/7/2025