Sheet151STABILITY CHECK FOR BLOCK PEDESTAL CAPACITY : (Valid for small Load)( Pedestals are designed for load comb : Dead Wt + Pipe operating Wt + Wind + Thermal Friction )Pedestal dimensionsWidth =0.6m(Along XX)Length=0.6m(Along ZZ)Height =0.8m ( Total height from U/S base plt. to bottom of block base )Stability Check Summary :Pressure Redistribution Coeff :TENG'S CHARTOverturning, FOSx =Msx / Mx =2.49OKex / Lx =0.20Overturning, FOSz =Msz / Mz =3.51OKez / Lz =0.14ex/LxSliding, FOS =Fsr / Fr =5.20OKCoeff =3.3900.020.040.060.080.10.120.140.160.180.20.220.240.260.280.30.320.34Maximum Bearing Pressure =72.15OK123456789101112131415161718Minimum Bearing Pressure =-24.76REDISTRIBUTION REQD.011.21.241.361.481.61.721.841.962.082.222.382.562.783.033.333.74.170.021.121.241.361.481.61.721.841.962.082.212.362.532.722.953.223.543.934.420.041.241.361.481.61.721.841.962.082.212.342.52.582.883.133.423.754.174.69Height of the steel pipe support =0.75m0.061.361.481.61.721.841.962.082.212.342.482.662.843.063.323.623.984.434.98Piping total min. vertical load =1.5kNMoment at C.G at base level of foundationez/Lz0.081.481.621.721.841.962.082.212.342.482.542.823.023.253.533.844.234.75.28Longitudinal friction load =0.35kN(Along ZZ)Mx1 =0.45kNm0.11.61.721.841.962.082.22.342.482.632.792.993.23.463.744.084.494.995.63Transverse friction load =0.15kN(Along XX)Mz1 =0.5425kNm0.121.721.841.962.082.212.342.482.632.792.983.183.423.683.984.354.765.315.97Wind Load on pipe =0.1kN(Along XX)Mx2 =0.2325kNm0.141.841.962.082.212.342.482.632.792.993.173.383.643.924.244.635.095.66100Wind load intensity on col =0.2kN/m(Along both direction)Mx3 =0.155kNm0.161.962.082.212.352.482.632.82.993.183.383.623.884.184.534.945.436.04100Vertical Load eccentricity =0.3m(Along XX)Mx4,Mz2 =0.17625kNm0.182.082.212.352.52.642.82.993.183.383.623.864.154.474.855.285.826.46100Coefficient of friction , k =0.40.22.22.352.52.682.832.993.183.393.623.864.154.444.795.195.666.23100100Permissible net bearing pressure =75kN/m20.222.392.532.682.843.023.193.423.643.884.154.474.775.155.576.086.691001000.242.62.722.883.063.253.463.683.924.184.474.795.155.576.016.561001001000.262.782.963.133.323.523.743.984.244.534.845.195.576.016.52100100100100Total Moment at base Mx =1.01375(Trans)kNm0.283.033.223.413.623.844.084.364.634.945.285.666.086.56100100100100100Total Moment at base Mz =0.71875(Long)kNm0.33.333.543.753.984.254.54.785.095.435.816.236.691001001001001001000.323.73.934.474.484.74.965.315.6666.45100100100100100100100100Total shear at base Hx =0.41(Trans)kN0.344.044.424.694.995.35.685.97100100100100100100100100100100100Total shear at base Hz =0.5(Long)kNResulatant shear, Fr =0.6466065264kNDead wt of foundation =6.912kNStabilising Mt about X , Msx =2.5236kNmStabilising Mt along Z , Msz =2.5236kNmResisting force in sliding, Fsr =3.3648kNMax Bearing Pressure Calc =71.4916666667kN/m2Min Bearing Pressure Calc =-24.7583333333kN/m2Redistributed max Pressure =72.1505kN/m^2Modified pressure intensity =72.1505

CHECK STABILITY

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Sheet3