P4: A layer of saturated clay 5 m thick is overlain by sand 4.0 m deep. The water table is 3 m below the top surface. The saturated unit weights of clay and sand are 18 kN/m³ and 20 kN/m³ respectively. Above the water table, the unit weight of sand is 17 kN/m³. Calculate the effective pressures on a horizontal plane at a depth of 9 m below the ground surface. What will be the increase in the effective pressure at 9 m if the soil gets saturated by capillary, up to height of 1 m above the water table? GL Y sand = 17 kN/m³ Y sat sand =20 kN/m3 Ysat clay =18 kN/m3 case (1) Y = 17 kN/m³ E 4, Capillary zone 1 m Ysat =20 kN/m³ Y sat clay =18 kN/m3 case (2) k 3 m | + 3 m ,
P4: A layer of saturated clay 5 m thick is overlain by sand 4.0 m deep. The water table is 3 m below the top surface. The saturated unit weights of clay and sand are 18 kN/m³ and 20 kN/m³ respectively. Above the water table, the unit weight of sand is 17 kN/m³. Calculate the effective pressures on a horizontal plane at a depth of 9 m below the ground surface. What will be the increase in the effective pressure at 9 m if the soil gets saturated by capillary, up to height of 1 m above the water table? GL Y sand = 17 kN/m³ Y sat sand =20 kN/m3 Ysat clay =18 kN/m3 case (1) Y = 17 kN/m³ E 4, Capillary zone 1 m Ysat =20 kN/m³ Y sat clay =18 kN/m3 case (2) k 3 m | + 3 m ,
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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P4: A layer of saturated clay 5 m thick is overlain by sand 4.0 m deep. The water table is 3 m below the top surface. The saturated unit weights of clay and sand are 18 kN/m3 and 20 kN/m3 respectively.
Above the water table, the unit weight of sand is 17 kN/m3. Calculate the effective pressures on a horizontal plane at a depth of 9 m below the ground surface. What will be the increase in the effective pressure at 9 m if the soil gets saturated by capillary, up to height of I m above the water table?
Transcribed Image Text:P4: A layer of saturated clay 5 m thick is overlain by
sand 4.0 m deep. The water table is 3 m below the top
surface. The saturated unit weights of clay and sand
are 18 kN/m and 20 kN/m respectively.
Above the water table, the unit weight of sand is 17
kN/m³. Calculate the effective pressures on a
horizontal plane at a depth of 9 m below the ground
surface. What will be the increase in the effective
pressure at 9 m if the soil gets saturated by capillary,
up to height of 1 m above the water table?
GL
Y sand = 17 kN/m3
Y sat sand
=20 kN/m3
Y pat
=18 kN/m3
clay
case (1)
Y = 17 kN/m3
4,
Capillary zone
1 m
Ysat =20 kN/m³
Y sat clay
=18 kN/m3
case (2)
k 3 m
k 3m
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