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BC-General-methods

# BC-General-methods - lb/ft3 = sat lb/ft3 = DB(ft = Dw(ft =...

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Bearing Capacity Methods - Comparisons Given Variables γ( lb/ft3) = 105 φ ( ° ) = 25 FS = 3.000 B' (ft) = 2.329 118 β = 0 0.060 L' (ft) = 3.400 4 Q (lb) = 50000 0.060 A' (ft) = 7.917 2 3000 0.015 B = 4 c ( lb/ft2) = 350 3000 0.015 L = 4 Hansen Method Calculated Variables c ( lb/ft2) = 350.00 321.20 γB 129.47 20.79 10.73 6.85 1.52 1.47 0.60 1.40 1.31 1.00 1.00 1.00 1.00 350.00 x 20.79 x 1.52 x 1.40 x 1 + + 321.20 x 10.73 x 1.47 x 1.31 x 1 + 55.60 x 4.00 x 6.85 x 0.60 x 1.00 x 1 = 22983 Q = 122574 OK Terzaghi Method Calculated & Obtained Variables c ( lb/ft2) = 350.00 321.20 γB 129.47 25.10 12.70 9.20 17045 Q = 44983 Not OK Meyerhof Method γ sat ( lb/ft3) = e B (ft) = D B (ft) = e L (ft) = D w (ft) = M B (lb-ft) = e L / L = M L (lb-ft) = e B / B = q ε (lb/ft2) = N c N q N γ F cs F qs F γs F cd F qd F γd F ci F qi F γi Calculation of the ultimate bearing capacity (q u ) q u = c N c F cs F cd F ci + q N q F qs F qd F qi + sat - γ w ) B N γ F γs F γd F γi q u = q u = q ε (lb/ft2) = N c N q N γ Calculation of the ultimate bearing capacity (q u ) q u = q u = 1.3(c)(N c ) + q(N q ) + 0.4(γ)(B)( Nγ)

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Calculated & Obtained Variables c ( lb/ft2) = 350.00 321.20 γB 129.47 20.72 10.66 6.77 2.46 1.49 1.00 1.00 1.31 1.00 1.00 1.00 1.00 1.00 350.00 x 20.72 x 1.49 x 1.31 x 1 + + 321.20 x 10.66 x 1.00 x 1.00 x 1 + 0.50 x 105.00 x 4.00 x 6.77 x 1.00 x 1.00 x 1 = 19070 Q = 50326 OK q ε (lb/ft2) = N c N q N γ K p = F cs F qs F γs F
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BC-General-methods - lb/ft3 = sat lb/ft3 = DB(ft = Dw(ft =...

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