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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 : 3 - HIP @ BATH#1 <br />Loads(Downward+) <br />Beam Weight 2.7 plf from 0 ft to 9.75 ft <br />Roof Rafter: (11+20)(6.5~0) = (DL=71.5~0PLF; LLr=130~0PLF) form 0 to 9.75 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 668/668 0 <br />2 340/341 0 <br />USE 2 x 8 <br />Critcal Shear = 668 LB @0' 1.5xV/(F'v x A)= 0.41 <br />F'v = 225, A = 10.88 <br />Critcal Moment = 1259 LB-FT @4.25' M/(F'b x S)= 0.85 <br />F'b = 1350, S = 13.14 <br /> Critical Deflection for TL = -0.278 INCH @ 4.75 L/240 = 0.488" <br /> Critical Deflection for LL = -0.175 INCH @ 4.75 L/360 = 0.325" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />9.75' <br />BEAM : 4 - CLG @ LIVING ROOM <br />Loads(Downward+) <br />Beam Weight 10.1 plf from 0 ft to 13.25 ft <br />Ceiling Joist DL: (4)(4) = (DL=16PLF) form 0 to 13.25 <br />Ceiling Joist : (4+10)(4.2) = (DL=17PLF; LLr=42.5PLF) form 8 to 13.25 <br />Point load @ 7.75 : Load from beam 1 at Support 1(P1) <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 669/669 0 <br />2 1035/1035 0 <br />USE 6 x 8 <br />Critcal Shear = -1035 LB @13.25' 1.5xV/(F'v x A)= 0.17 <br />F'v = 212, A = 41.25 <br />Critcal Moment = 4400 LB-FT @7.75' M/(F'b x S)= 0.6 <br />F'b = 1688, S = 51.56 <br /> Critical Deflection for TL = -0.375 INCH @ 7 L/240 = 0.662" <br /> Critical Deflection for LL = -0.202 INCH @ 7 L/360 = 0.442" <br />1 2 <br />P1 <br />Moment <br />Shear <br />Deflection <br />13.25' <br />Page 17 of 21 <br />524 S Shawnee Dr & <br />Unit# 22/7/2025