lecture_6 - Lecture # 6 Vertical & Horizontal Insitu...

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Unformatted text preview: Lecture # 6 Vertical & Horizontal Insitu Stresses Settlements, Compressibility & Laboratory Oedometer Testing Soil Stresses Y X Z Y or Lateral or Horizontal Stress Z or Vertical Stress, V X or Longitudinal or Horizontal Stress Z Geostatic Stresses H H 1 2 3 z = V S F v = i V i- z A = 0 h 1 h 2 h 3 i V i / A = z A /A i V i / A = i h i = z + F v / A = P i /A + U A V / A U P v = v + U v + = v u Vertical Effective Stress Where A = A v + A c A c = Area of contacts 2245 zero Pore Pressures 1560 psf Vertical Effective Stress Example Moist Sand T = 110pcf Saturated Sand Sat = 120 pcf 10 x 110 pcf = 1100 psf 10 10 x 110 pcf + 15 x 120pcf= 2900 psf 15 Total Vertical Stress, v U = 15 x 62.4=936psf Pore Pressure, u- = 1100 psf 1964 psf Vertical Effective Stress v Insitu Effective Horizontal Stress At Rest Stress State ( 29 [ ] L H v v E ' ' ' 1...
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This note was uploaded on 08/03/2011 for the course CEG 4011 taught by Professor Bloomquist during the Spring '11 term at University of Florida.

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lecture_6 - Lecture # 6 Vertical & Horizontal Insitu...

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