165_CEG 4012 Notes Fall 2011 CEG 4012 Notes Fall 2011

165_CEG 4012 Notes Fall 2011 CEG 4012 Notes Fall 2011 - use...

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Drilled Shaft Example, Sand No static test Uniform Site Average site investigation therefore FS = 3.0 1conCfete = 23.6 kN/m 3 2.0 m 1.5 m 5.5m Silty Sand, 'Ym = 17 kN/m 3 , 'Ysat = 20 kN/m 3 0.6 m 'Yw = 9.81 kN/m 3 Poorly graded Sand, 'Ysat = 20 kN/m 3 5.0 m Well graded Sand, 1sal = 20 kN/m 3 , Avg. N 60 1.2 m below toe = 22 blows/0.3m pile weight: W = [23.6 kN/m 3 (2m) + (23.6-9.81 kN/m 3 )(12 m)] x 1t (0.6 m)2/4] = 60.1 kN bearing: ql = 57.5 (22 blows/0.3m) = 1265 kPa AI = 1t Bb 2/4 = 1t (0.6)2 I 4 = 0.283 m 2 at = 1265 kPa ( 0.283 m 2 ) = 358 kN side shear:
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Unformatted text preview: use ~ method, Its = ~alyl where ~ = 1.5 -O.245~z,m Depth Thickness (f'y f s = ~(f'v A s =1tB8L as = fsAs Layer C.L. m kPa ~ kPa m 2 kN m Silty Sand 1.20 above GWT 1.0 2.0 17.0 (max) 20.4 3.77 77 (0-2 m) Silty Sand belowGWT 2.75 1.5 41.6 1.09 45.2 2.83 128 (2-3.5 m) Sand 6.25 5.5 77.3 0.88 68.0 10.37 705 (3.5-9m) Sand 11.5 5.0 130.9 0.68 89.0 9.42 838 (9-14 m) Ea s 1748 allowable load: P a = 1748 + 358 -60.1 = 682 kN 3.0...
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This note was uploaded on 02/10/2012 for the course CEG 4012 taught by Professor Staff during the Fall '08 term at University of Florida.

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