design of square footing(final)

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Excel sheet for structural design of square footing

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Sheet1Design of Square FootingColumn Location=InteriorCoolumn Size, C=500mmColumn Steel=8#25Dead load, PD=2200KNLive Load, PL=1550KNLive Reduction =0%fc'=34Mpafy "for footing"=420MPafy "for Dowels"=420MpaAverage Density of fill & Foundation=1350Kg/m3 Density of Surcharge=2400Kg/m3 Depth of footing from PL=1.2mDepth of Surcharge=0.15mSoil Bearing Capacity, qa=110Kpas40bo4160mm

Are of footing=40.51sq. mSize of Footing=6.4m6.4X6.4

Depth of Footing, H=600mmEffective Depth=540mm

Punching Shear CheckNGOne way Shear CheckOK

Moment=543.40KN-mSteel Ratio=0.00543Area of Steel=2934.64Sq mmChech for minmum SteelOKArea of Steel=1200.00Sq mmSelect Bar Diameter=#16Bar Spaing @70mm c/c

A1 = Ac=250000Sq. mmA2=7075600Sq. mm(A2/A1)=21Check for DowelOKDowel Steel=1250Sq. mmSelect Bar Dia=#13No. of Dowel Bars =10

Development length in tension, ld=680mm>300OKDev. length in comp. for col. steel, ldc =1062mm>200OKDev. length in comp. for Dowel Steel , ldc =552mm>200OKComp. Splice Length for Dowel, lsc=388mm>300OK

&"Times New Roman,Bold"&20Square Footing Design

Sheet2Actual valueRequired valueBar DiaBar Area#1071175#1312975150#16199150225#19284225300#22387300375#25501375450#29645450525#32819525600#361006600675#431542675750#5725817508258259009009759751050Actual valueRequired value1050112515011251200506012001275607012751350708013501425809014251500901001500157510011015751650110120165017251201301725180013014018001875140150187519501501601950202516017020252100170180210021751801902175225019020022502325200210232524002102202400247522023024752302402402502502602602702702802802902903003003103103203203303303403403503503603603703703803803903904004004104104204204304304404404504504604604704704804804904905005005105105205205305305405405505505605605705705805805905906006006106106206206306306406406506506606606706706806806906907007007107107207207307307407407507507607607707707807807907908008008108108208208308308408408508508608608708708808808908909009009109109209209309309409409509509609609709709809809909901000100010101010102010201030103010401040105010501060106010701070108010801090109011001100111011101120112011301130114011401150115011601160117011701180118011901190120012001210121012201220123012301240124012501250126012601270127012801280129012901300130013101310132013201330133013401340135013501360136013701370138013801390139014001400141014101420142014301430144014401450145014601460147014701480

Sheet3