7. Figure 6 shows a clay layer of thickness 2H = 8m contained between two sand layers and subjected to a uniform stress o* = 100 kN / m² . %3D 100 kN/m² 6m" Sand: 's =18 kN/m³ 8 m Clay : 's = 20 kN/m³ Sand: s = 19 kN/m³ Figure 6. Axial stress state in one-dimensional soil consolidation (i) If the clay layer is Normally Consolidated, with Cc =0.01, calculate the consolidation settlement by considering the effective stress changes at the center of the clay layer. (ii) Calculate the time required for 90% of this consolidation settlement, given C, = 4× 10-' m² / sec and Too = 0.848
7. Figure 6 shows a clay layer of thickness 2H = 8m contained between two sand layers and subjected to a uniform stress o* = 100 kN / m² . %3D 100 kN/m² 6m" Sand: 's =18 kN/m³ 8 m Clay : 's = 20 kN/m³ Sand: s = 19 kN/m³ Figure 6. Axial stress state in one-dimensional soil consolidation (i) If the clay layer is Normally Consolidated, with Cc =0.01, calculate the consolidation settlement by considering the effective stress changes at the center of the clay layer. (ii) Calculate the time required for 90% of this consolidation settlement, given C, = 4× 10-' m² / sec and Too = 0.848
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:7. Figure 6 shows a clay layer of thickness 2H = 8m contained between
two sand layers and subjected to a uniform stress o = 100 kN / m² .
100 kN/m2
6m'
Sand: "s =18 kN/m³
8 m
Clay : "s = 20 kN/m³
Sand: s =19 kN/m³
Figure 6. Axial stress state in one-dimensional soil consolidation
(i) If the clay layer is Normally Consolidated, with Cc = 0.01,
calculate the consolidation settlement by considering the
effective stress changes at the center of the clay layer.
(ii) Calculate the time required for 90% of this consolidation
settlement, given C, = 4×10'm² / sec and T.o = 0.848
90
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