combined footing design

5
5/28/2018 CombinedFootingDesign-slidepdf.com http://slidepdf.com/reader/full/combined-footing-design-562451d69a887 1/5 Dimensions: Col.1 Col.2 Length, x (m) 0.46 0.46 Ratio, b/a Width, y (m) 0.46 0.46 Distance, Xa (m) Distance, Xp (m) 5.48 Distance, Xb (m) 0.23 Distance, Xa (m) 0.23 Material Properties: Conc comp strength f'c, (Mpa) 21 Steel tensile strength fy, (Mpa) 400  Allow soil pressure, qa (kPa) 192 Loads: Col. Load Dead Live Wind Seismic P1 (kN) 1200 816 0 0 P2 (kN) 900 660 0 0 M1 (kN.m) 0 0 0 0 M2 (kN.m) 0 0 0 0 Factored Loads: Col. Load 1 2 3 4 P1 (kN) 3067.2 1080 2300.4 2300.4 Case 1: 1.4D+1.7L P2 (kN) 2382 810 1786.5 1786.5 Case 2: 0.9D+1.3W M1 (kN.m) 0 0 0 0 Case 3: 0.75(1.4D+1.7L+1.7W) M2 (kN.m) 0 0 0 0 Case 4: 0.75(1.4D+1.7L+1.87E) Suggested Footing Dimensions: Left width, b (m) 4.24 Distance, Xb (m) 0.23 Length, L (m) 5.94 Right width, a (m) 2.03 Distance, Xa (m) 0.23 Effect. depth, d (m) 0.85  Area, (m2) 18.6219 User Input Footing Dimensions: Left width, b (m) 4.24 Distance, Xb (m) 0.23 Length, L (m) 5.94 Right width, a (m) 2.03 Distance, Xa (m) 0.23 Effect. depth, d (m) 0.85  Area, (m2) 18.6219 Check User Input Dimensions:  Allowable soil pressure, qa (kPa) 192 Maximum soil pressure, qmax (kPa) 192.1121 (qmax > qa) soil failure, increase area Minimum soil pressure, qmin (kPa) 107.1293 (qmin > 0) Ok Check User Input Effective Depth: Maximum wide beam shear, Vw (kN/m width) 598.5596 Wide beam shear strength, Vc1 (kN/m width) Maximum punching shear, Vp (kN/m width) 2303.534 Punching shear strength, Vc2 (kN/m width) Vw < Vc1, OK Vp < Vc2, OK Area of Steel: Use area of steel, As (cm2) 38 for bottom reinforcement  As (cm2) 29.75 for top reinforcement Load cases Combined Footing Analysis and Design Working loads  Xa  Xp  Xb  L b Col.2 Col.1  x1 ´  y1  x2´  y2   fy Continue

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Combined Footing Design

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InputCombined Footing Analysis and DesignDimensions:Col.1Col.2Length, x (m)0.460.46Ratio, b/aWidth, y (m)0.460.46Distance, Xa (m)Distance, Xp (m)5.48Distance, Xb (m)0.23Distance, Xa (m)0.23Material Properties:Conc comp strength f'c, (Mpa)21Steel tensile strength fy, (Mpa)400Allow soil pressure, qa (kPa)192Loads:Working loadsCol. LoadDeadLiveWindSeismicP1 (kN)120081600P2 (kN)90066000M1 (kN.m)0000M2 (kN.m)0000Factored Loads:Load casesCol. Load1234P1 (kN)3067.210802300.42300.4Case 1:1.4D+1.7LP2 (kN)23828101786.51786.5Case 2:0.9D+1.3WM1 (kN.m)0000Case 3:0.75(1.4D+1.7L+1.7W)M2 (kN.m)0000Case 4:0.75(1.4D+1.7L+1.87E)Suggested Footing Dimensions:Left width, b (m)4.2399997711Distance, Xb (m)0.23Length, L (m)5.9400000572Right width, a (m)2.0299999714Distance, Xa (m)0.23Effect. depth, d (m)0.8500000238Area, (m2)18.6218994146User Input Footing Dimensions:Left width, b (m)4.2399997711Distance, Xb (m)0.2300000042Length, L (m)5.9400000572Right width, a (m)2.0299999714Distance, Xa (m)0.2300000042Effect. depth, d (m)0.8500000238Area, (m2)18.6218994146Check User Input Dimensions:Allowable soil pressure, qa (kPa)192Maximum soil pressure, qmax (kPa)192.1121063232(qmax > qa) soil failure, increase areaMinimum soil pressure, qmin (kPa)107.1292953491(qmin > 0) OkCheck User Input Effective Depth:Maximum wide beam shear, Vw (kN/m width)598.5595703125Wide beam shear strength, Vc1 (kN/m width)649.1982416616Maximum punching shear, Vp (kN/m width)2303.5336914062Punching shear strength, Vc2 (kN/m width)3999.0612792969Vw < Vc1, OKVp < Vc2, OKArea of Steel:Use area of steel, As (cm2)38for bottom reinforcementAs (cm2)29.75for top reinforcement

Minimum Xb = 0.5x1Minimum Xa = 0.5x2, or enter the ratio b/aNot less than suggested area

Calculations0004.239999771129.750.5939999819-585.2280273438-224.48225402834.018999576629.752.82999920851.1879999638-440.8912963867-551.92486572273.797999858929.751.7819999456-289.2628173828-810.44824218753.576999902729.752.3759999275-128.9232788086-993.11895751953.355999946633.9765777588-1092.721801757837.57052230832.969999790241.9467849731-1091.06115722663.134999990537.51029586790.000781730929.753.5639996529225.7188110352-1092.72180175782.914000034337.57052230834.1579995155425.5425415039-982.7703247072.693000078233.60531616214.7519993782645.694519043-740.41174316412.472000122129.755.3459992409892.1301269531-336.70272827152.251000404429.755.9399991035-0.00012026630.00078173092.030000448229.75

OutputCombined Footing Analysis and DesignIssue:DesignPageDate:1 of 1Project:TitleRevised by:Checked by:Dimensions:Col.1Col.2Length, x (m)0.460.46Ratio, b/aWidth, y (m)0.460.46Distance, Xa (m)Distance, Xp (m)5.48Left width, b (m)4.2899999619Distance, Xb (m)0.2300000042Right width, a (m)2.0499999523Distance, Xa (m)0.2300000042Length, L (m)5.9400000572Eff. depth, d (m)0.8500000238Area, (m2)18.6218994146Material Properties:Conc comp strength f'c, (Mpa)21Steel comp strength fy, (Mpa)400Allow soil pressure, qa (kPa)192Loads:Working loadsCol. LoadDeadLiveWindSeismicP1 (kN)120081600P2 (kN)90066000M1 (kN.m)0000M2 (kN.m)0000Checkings:Allowable soil pressure, qa (kPa)192Maximum soil pressure, qmax (kPa)192.1121063232(qmax > qa) soil failure, increase areaMinimum soil pressure, qmin (kPa)107.1292953491(qmin > 0) OkMaximum wide beam shear, Vw (kN/m width)598.5595703125Maximum punching shear, Vp (kN/m width)2303.5336914062Wide beam shear strength, Vc1 (kN/m width)649.1982416616Vw < Vc1, OKPunching shear strength, Vc2 (kN/m width)3999.0612792969Vp < Vc2, OKArea of Steel:Use area of steel, As (cm2)38for bottom reinforcementAs (cm2)29.75for top reinforcementDetails:xV, kNM, kN-mb, mAs, cm2/m0004.239999771129.750.5939999819-2352.0311940906-902.1940838874.018999576629.751.1879999638-1674.5050814477-2096.21056211393.797999858929.751.7819999456-1034.6930696403-2898.97328346853.576999902729.752.3759999275-432.6665167964-3332.90716839733.355999946633.97657775882.9699997902131.5031704908-3420.47671750013.134999990537.51029586793.5639996529657.7446231059-3184.19136783792.914000034337.57052230834.15799951551145.986097548-2646.600561292.693000078233.60531616214.75199937821596.1569298944-1830.29791948392.472000122129.755.34599924092008.1852765114-757.91797748752.251000404429.755.9399991035-0.000.002.030000448229.75

Sheet1baL2.56935930251.11330068115.94000005724.24212646482.02891707425.94000005723.18159508711.5216877465.94000005723.18159508711.5216877465.94000005722.56935930251.11330068115.94000005720.80898290870.3587356210.66436940430.66436940430.5371381640.23774485290.43962115050.43962115050.78384602070.34951925280.64497572180.64497572180.78384602070.34951925280.64497572180.64497572181.18823289870.78384602070.89117461440.89117461441.16516959670.40898808840.87387728690.87387728691.18823289870.40624505280.89117461440.89117461441.05672061440.3708036840.7925404310.7925404311.15925693510.39654466510.86944264170.86944264170.98664039370.34610044960.73998028040.73998028041.13059985640.38694614170.84794992210.84794992210.92401546240.32402518390.69301158190.69301158191.10225367550.37744665150.82669031620.82669031620.86771631240.30417975780.65078723430.65078723431.07421088220.36804389950.8056581020.8056581020.81683045630.2862424850.61262291670.61262291671.0464643240.3587356210.78484815360.78484815360.77061325310.26995089650.57795989510.57795989511.01900684830.40249153970.76425510640.76425510640.72845000030.07989598810.54633748530.54633748530.99183166030.47901225090.7438734770.7438734770.68982994560.11618643250.5173724890.5173724890.96493226290.47588258980.72369915250.72369915250.65432435270.11370809380.49074327950.49074327950.93830227850.47277826070.70372664930.70372664930.62157124280.11131986230.46617841720.46617841720.91193562750.46969899540.68395173550.68395173550.59126228090.109016940.44344672560.44344672560.88582587240.46664434670.66436940430.66436940430.56313389540.10679481920.42235043640.42235043640.85996776820.46361401680.70551824570.70551824570.53695881370.10464932020.40397477150.40397477150.83435547350.46060776710.73372435570.73372435570.51254045960.10257655380.12570098040.12570098040.80898290870.45762512091.02796602251.02796602250.4897077680.10057286920.25092053410.25092053410.86418902870.45466583971.02152669431.02152669430.47001525760.09863489120.24614961450.24614961450.89280462270.45172962551.01513755321.01513755320.14132136110.09675943110.24153262380.24153262381.34506368640.44881612061.00879776481.00879776480.31608289480.09494350110.23706217110.23706217111.33667540550.44592502711.00250661371.00250661370.31030857560.09318432210.23273141680.23273141681.32835125920.44305613640.99626344440.99626344440.30471193790.09147927170.22853393850.22853393851.32009029390.44020903110.99006772040.99006772040.29928487540.0898258910.22446365650.22446365651.31189155580.43738350270.98391866680.98391866680.29401984810.08822187040.22051486370.22051486371.30375444890.43457922340.97781580690.97781580690.28890961410.08666501940.21668221060.21668221061.29567801950.43179601430.97175848480.97175848480.28394755720.08515328910.21296066050.21296066051.28766155240.42903345820.96574610470.96574610470.27912724020.08368475740.20934543010.20934543011.27970409390.42629137640.95977807040.95977807040.27444273230.08225759120.20583204930.20583204931.2718050480.42356953020.9538537860.9538537860.26988834140.0808700770.20241624120.20241624121.26396358010.42086759210.94797271490.94797271490.2654587030.07952056830.19909404220.19909404221.25617909430.41818532350.94213432070.94213432070.26114881040.07820753750.19586162270.19586162271.24845063690.4155224860.93633800750.93633800750.25695383550.07692951710.19271539150.19271539151.24077773090.41287890080.93058323860.93058323860.25286927820.07568512860.18965195120.18965195121.23315942290.41025421020.92486953740.92486953740.24889078740.07447306070.1866680980.1866680981.22559523580.91919642690.91919642690.24501433970.18376074730.18376074731.21808433530.91356331110.91356331110.24123600130.18092699350.18092699351.21062612530.90796965360.90796965360.23755213620.17816409470.17816409471.20321989060.90241491790.90241491790.23395921290.17546941340.17546941341.19586515430.89689886570.89689886570.23045395310.17284046110.17284046111.18856108190.89142084120.89142084120.22703312340.17027483880.17027483881.18130719660.88598042730.88598042730.22369375820.16777031120.16777031121.17410278320.88057702780.88057702780.22043296690.16532473270.16532473271.16694712640.87521040440.87521040440.21724800770.1629360020.1629360021.15983998780.8698799610.8698799610.21413625780.16060219710.16060219711.15278041360.864585340.864585340.21109524370.15832142530.15832142531.14576804640.85932606460.85932606460.20812255140.15609191360.15609191361.13880217080.85410165790.85410165790.20521593090.15391194820.15391194821.13188242910.84891176220.84891176220.20237317680.15177989010.15177989011.1250079870.84375602010.84375602010.19959224760.14969417450.14969417451.1181786060.83863389490.83863389490.19687110190.14765332640.14765332641.11139357090.83354514840.83354514840.1942078620.14565588530.14565588531.10465228560.8284892440.8284892440.19160068040.14370051030.14370051031.09795439240.82346582410.82346582410.18904782830.14178586010.14178586011.09129941460.81847453120.81847453120.18654759230.13991069790.13991069791.08468663690.81351500750.81351500750.18409840760.13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MBD000040C1.unknown

MBD00050F5B.unknown