A clay layer 4 m thick rests beneath a deposit of submerged sand 8 m thick. The top of the sand is located 3 m below the surface of a lake. Thesaturated unit weight of sand is 25 kN/cu.m and of clay 20 kN/cu.m. Determine the total vertical pressure in kPa at mid-height of the clay layer.(Final answer should be rounded-off to two decimal places)3 mWaterSand, 25 KN/m8 m2 m4 mClay, 20 KN/m

Answered: A clay layer 4 m thick rests beneath a…

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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A clay layer 5.61 m. thick rests beneath a deposit of submerged sand 6.16 m. thick. The top of the sand is located 2.2 m. below the surface of a lake. The saturated unit weight of sand is 20 kN/m3 and of clay is 19 kN/m3. Determine the total vertical stress at mid-height of the clay layer.
B) For the soil profile shown in Figure (2), the rate of downward water flow is 0.4 m³/hr.m². Calculate: Peizometric reading at point C. Total head loss. Effective stress at point B. m 6 m A C K=1.0 m/ sec Ys = 18.0 kN/m³ e-1.2 K=0.5 m/sec Ys=20.0 kN/m² em 0.6 Datum Fig.(2) Piezometer
The bottom of a river is 8m below the water surface. Underneath the bottom of the river is a layer of sand having a specific weight of 18 kN/m3. If the recorded pressure at the tunnel located at the bottom of the sand layer is 305 kPa, how thick is the sand layer?
The water table is located at a depth of 4.0 m below the ground surface in a deposit of sand 16.0 m thick (Fig. 1). The sand is saturated above the water table. The total unit weight of the sand is 25 kN/m3. Calculate the (a) the total pressure, (b) the pore water pressure and (c) the effective pressure at depths 0, 4.0, 10.0, and 16.0 m from the ground surface, and draw the pressure distribution diagram.
A layer of saturated clay 5 m thick is overlain by sand 4.0 m deep. The water table is 3m below the top surface. The saturated unit weight of clay and sand are 18kN/m3 and 20KN/m3 respectively. Above the water table, the unit weight of sand is 17KN/m3. Calculate the effective pressure on a horizontal plane at a depth of 9 m below the ground surface. What will be the increase in the effective pressure at 9m if the soil gets saturated by capillary, up to height of 1m above the water table? Yw = 9.81KN/m3.
Q1.17 Please show me how to solve problem... ty! Calculate the 1000 to 500 hPa thickness for a constant lapse rate atmosphere with y=6.5 K km^(-1) and T_o= 273 K.
A dense silt has the following properties: void ratio = 0.64, specific gravity = 2.5. Free ground water = 10.23m below the ground. Capillary action rise will reach 5.6m. The soil above the capillary action rise is dry while within the zone, it is saturated at 51.53%. Determine the effective pressure (in kPa) at a depth of 7.42m from the ground surface.
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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 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 pressure on a horizontal plane at a depth of 9 m below the ground surface. What will be the increase in effective pressure at 9 m, if the soil gets saturated by capillary up to height of 1 m above water table?
1 points sand and clay. The unit weight of sand is 16.45 kN/m3, saturated unit weight of clay is 19.52 kN/m3, void ratio of clay is 0.76, LL = 42. A sand layer 8 meters high overlies a clay layer that is 9 meters high. Ground water table is at the interface Determine the settlement (in mm) of the consolidating layer for a stress increase of 58.97 kPa. Round off to three decimal places.
For a site, there is a layer of sand, 5.3m thick, that lies over a clay layer of 1.2m. The water table is 1.3m below the ground surface. The saturated unit weights of the sand and clay are 21.6 kN/m3 and 18.8 kN/m3, respectively. The unit weight of sand above the water table is 17.2 kN/m3. Determine the total vertical stress, porewater pressure and effective vertical stress at the bottom of each layer. Plot the values found in (a) against the depth below ground level. If the water table rises up to an elevation of 0.7 m above the ground level, what will the total vertical stress, pore water pressure and effective vertical stress at the bottom of the clay layer?
A dense silt layer has the following properties: void ratio = 0.75, specific gravity = 2.59. Free ground water is 9.49 m. below the ground. Capillary action rise will reach 6.69 meters. The soil above capilary action rise is dry while within the zone, it is saturated at 50.02%. Determine the effective pressure (in kPa) at a depth of 7.51 meters from the ground surface. Round off to three decimal places. Selected Answer: 128.657

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