A layer of sand extends from ground level to a de low permeability. The water table is 6m below the unit weight of the sand is 18 kN/m³ and the clay i is 15 kN/m³. Over a short period of time the wate this new level. Determine the effective vertical following situations: a) Immediately after the rise of the water table b) Several years after the rise of the water table. WT(2)
A layer of sand extends from ground level to a de low permeability. The water table is 6m below the unit weight of the sand is 18 kN/m³ and the clay i is 15 kN/m³. Over a short period of time the wate this new level. Determine the effective vertical following situations: a) Immediately after the rise of the water table b) Several years after the rise of the water table. WT(2)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:1) A layer of sand extends from ground level to a depth of 9m and overlies a 6m thick clay layer, which has very
low permeability. The water table is 6m below the surface of the sand. For the given soil profile the saturated
unit weight of the sand is 18 kN/m³ and the clay is 19 kN/m³; the unit weight of the sand above the water table
is 15 kN/m³. Over a short period of time the water table rises by 3m and is expected to remain permanently at
this new level. Determine the effective vertical stress at depths of 8 and 12m below ground level for the
following situations:
a) Immediately after the rise of the water table
b) Several years after the rise of the water table.
WT(2)
WT(1)
0
8 m
12 m
SAND
CLAY
3m
6 m
9m
6 m
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