Two sheet piles were driven 4 m apart into clayey sand, as shown in Figure 8.9, and a 2 m depth of soil between the two sheet piles was removed. To facilitate some proposed construction work, the region between the sheet piles is being dewatered where the water level is lowered to the excavation level by pumping out water con- tinuously. Assuming the hydraulic conductivity of the clayey sand as 2 x 10-6 cm/s, estimate the quantity of water that has to be pumped out per meter length per day. 4.0 m 2.5 m 2.0 m * 3.0 m K Sheet pile Impervious stratum Ground Level Clayey sand

Two sheet piles were driven 4 m apart into clayey sand, as shown in Figure 8.9, and a 2 m depth of soil between the two sheet piles was removed. To facilitate some proposed construction work, the region between the sheet piles is being dewatered where the water level is lowered to the excavation level by pumping out water con- tinuously. Assuming the hydraulic conductivity of the clayey sand as 2 x 10-6 cm/s, estimate the quantity of water that has to be pumped out per meter length per day. 4.0 m 2.5 m 2.0 m * 3.0 m K Sheet pile Impervious stratum Ground Level Clayey sand

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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An 1000 kN compressive load is to be imposed on a 400-mm diameter, 18-m long steel pipe pile driven into the soil profile shown below. The net unit toe-bearing and unit side-friction resistances are as shown. Compute the downward load capacity using a factor of safety of 3 and determine if the design is acceptable.
A storage tank of diameter of 30 m and gross (total)weight 105 kN is to be constructed on site shown below. To construct the tank 5 m of the dense sand layer will be excavated and the tank will be built as shown .a) Calculate the increase in stress in the clay layer under the center of the tank . b) Calcuate the final consolidation settlement due to the tank. C) how much settlement that would be expected to occure 1 year, 5 years and 20 years after the tank is completed. d)- Assume that the silty clay were originally overconsolidated (OCR=1.4), how would be the ultimate consolidations settlements be different? Given c 0.03 %3D Dense Sand, G,-2.80; e=0.55 10m 0.95 Saturated nomially consolidated silty clay C43 10" m day 20 m G267: Drained permicable sandstone
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