2.13 The soil profile at a site is shown in Figure P2.13. The moist and saturated unit weights of the sand are 17.0 kN/m2 and 20.0 kN/m3, respectively. A soil specimen was taken from the middle of the clay layer and subjected to a consolidation test, and the following properties are reported: Natural water content of the clay = 22.5% Specific gravity of the soil grains 2.72 Preconsolidation pressure 110.0 kN/m2 Compression index = 0.52 Swelling index 0.06 a. Is the clay normally consolidated or overconsolidated? b. If a 2 m high compacted fll with a unit weight of 20.0 kN/m3 is placed on the ground, what would be the final consolida- tion settlement? GL 2.0 m Sand 3.0 m Clay 3.0 m Bedrock FIGURE P2.13
2.13 The soil profile at a site is shown in Figure P2.13. The moist and saturated unit weights of the sand are 17.0 kN/m2 and 20.0 kN/m3, respectively. A soil specimen was taken from the middle of the clay layer and subjected to a consolidation test, and the following properties are reported: Natural water content of the clay = 22.5% Specific gravity of the soil grains 2.72 Preconsolidation pressure 110.0 kN/m2 Compression index = 0.52 Swelling index 0.06 a. Is the clay normally consolidated or overconsolidated? b. If a 2 m high compacted fll with a unit weight of 20.0 kN/m3 is placed on the ground, what would be the final consolida- tion settlement? GL 2.0 m Sand 3.0 m Clay 3.0 m Bedrock FIGURE P2.13
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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subject: Geotechnical Engineering
book: principle of foundation engineering - Braja M Das
Transcribed Image Text:2.13
The soil profile at a site is shown in Figure P2.13. The moist
and saturated unit weights of the sand are 17.0 kN/m2 and
20.0 kN/m3, respectively. A soil specimen was taken from
the middle of the clay layer and subjected to a consolidation
test, and the following properties are reported:
Natural water content of the clay = 22.5%
Specific gravity of the soil grains 2.72
Preconsolidation pressure 110.0 kN/m2
Compression index = 0.52
Swelling index 0.06
a. Is the clay normally consolidated or overconsolidated?
b. If a 2 m high compacted fll with a unit weight of 20.0 kN/m3
is placed on the ground, what would be the final consolida-
tion settlement?
GL
2.0 m
Sand
3.0 m
Clay
3.0 m
Bedrock
FIGURE P2.13
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