For a normally consolidated laboratory clay specimen drained on both sides, the following are given: σ0’ = 4000 ib/ft²                        e=1.2 σ0’ + Δσ’= 5000 lb/ft²               e=0.9 Thickness of clay specimen= 2in Time for 50% consolidation= 2 min.   Determine the hydraulic conductivity (ft/min) of the clay for the loading range. How long (in days) will it take for a 6-ft clay layer in the field(drained on both side) To reach 60% consolidation?

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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For a normally consolidated laboratory clay specimen drained on both sides, the following are given:

σ0’ = 4000 ib/ft²                        e=1.2

σ0’ + Δσ’= 5000 lb/ft²               e=0.9

Thickness of clay specimen= 2in

Time for 50% consolidation= 2 min.

 

  1. Determine the hydraulic conductivity (ft/min) of the clay for the loading range.
  2. How long (in days) will it take for a 6-ft clay layer in the field(drained on both side)

To reach 60% consolidation?

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