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Dong Engineering Inc. <br />REMODEL & ADDITION <br />1409 MERIDAY LN, SANTA ANA, CA 92706 <br />Job #: 250344 <br />Date : 08/18/2025 <br />Plan : 1 <br />BEAM : F1 - F.J. 2X6 DFL#2 @ 16" O.C. (MAX L=9'-6") <br />Loads(Downward+) <br />Floor Primary: (13+40)(1.3) = (DL=17.4PLF; LL=53.4PLF) form 0 to 9.5 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 336/336 0 <br />2 336/336 0 <br />USE 2 x 6 <br />Critcal Shear = 336 LB @0' 1.5xV/(F'v x A)= 0.34 <br />F'v = 180, A = 8.25 <br />Critcal Moment = 798 LB-FT @4.75' M/(F'b x S)= 0.94 <br />F'b = 1346, S = 7.56 <br /> Critical Deflection for TL = -0.39 INCH @ 4.75 L/240 = 0.475" <br /> Critical Deflection for LL = -0.294 INCH @ 4.75 L/360 = 0.317" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />9.5' <br />BEAM : R1 - R.R. 2X6 DFL#2 @ 16" O.C. (MAX L=11'-9") <br />Loads(Downward+) <br />Roof Rafter: (14+20)(1.3) = (DL=18.7PLF; LLr=26.7PLF) form 0 to 11.75 <br />Reactions (D+Lr+L/Max. Load comb.) <br />Bearing Down Up <br />1 267/267 0 <br />2 267/267 0 <br />USE 2 x 6 <br />Critcal Shear = 266 LB @0' 1.5xV/(F'v x A)= 0.21 <br />F'v = 225, A = 8.25 <br />Critcal Moment = 783 LB-FT @5.75' M/(F'b x S)= 0.74 <br />F'b = 1682, S = 7.56 <br /> Critical Deflection for TL = -0.585 INCH @ 5.75 L/240 = 0.588" <br /> Critical Deflection for LL = -0.344 INCH @ 5.75 L/360 = 0.392" <br />1 2 <br />Moment <br />Shear <br />Deflection <br />11.75' <br />23 of 26