up to a depth of 13 ft from the ground and below which lies sand. The clay stratum is saturated above the water table. Given: Clay stratum: w = 30 percent, Gs = 2.72; Sandy stratum: w = 26 percent, Gs = 2.64. Required: (i) The total pressure, pore pressure and effective pressure at a depth of 26 ft below the ground surface. (ii) (ii) The change in the effective pressure if the water table is brought down to a level of 13 ft below the ground surface by pum
up to a depth of 13 ft from the ground and below which lies sand. The clay stratum is saturated above the water table. Given: Clay stratum: w = 30 percent, Gs = 2.72; Sandy stratum: w = 26 percent, Gs = 2.64. Required: (i) The total pressure, pore pressure and effective pressure at a depth of 26 ft below the ground surface. (ii) (ii) The change in the effective pressure if the water table is brought down to a level of 13 ft below the ground surface by pum
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
The water table in a certain deposit of soil is at a depth of 6.5 ft below the ground surface. The
soil consists of clay up to a depth of 13 ft from the ground and below which lies sand. The clay
stratum is saturated above the water table. Given: Clay stratum: w = 30 percent, Gs = 2.72; Sandy
stratum: w = 26 percent, Gs = 2.64.
Required:
(i)
The total pressure, pore pressure and effective pressure at a depth of 26 ft below the
ground surface.
(ii) (ii) The change in the effective pressure if the water table is brought down to a level of
13 ft below the ground surface by pumping.
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