A layer of saturated clay 5 m thick is overlain by 7 m thick sand layer. The water table lies at junction of sand and clay layers and soil is saturated by capillary action upto 4 mabove the junction. The saturated unit weight of sand and clay are 19 kN/m³ and 16 kN/m3 respectively and bulk unit weight of sand is 18 kN/m³.The effective stress just above the new water level is 54 kN/m2.Correct OptionThe effective stress at the junction of clay layer and sand layer is 130 kN/m2.Correct OptionThe effective stress just below the initial water level is 93.24 kN/m².The pore water pressure at the junction of sand and clay layer is 0 kN/m2.Correct Option

A layer of saturated clay 5 m thick is overlain by 7 m thick sand layer. The water table lies at junction of sand and clay layers and soil is saturated by capillary action upto 4 m above the junction. The saturated unit weight of sand and clay are 19 kN/m3 and 16 kN/m3 respectively and bulk unit weight of sand is 18 kN/m3. The effective stress just above the new water level is 54 kN/m2. Correct Option The effective stress at the junction of clay layer and sand layer is 130 kN/m2. Correct Option The effective stress just below the initial water level is 93.24 kN/m2. The pore water pressure at the junction of sand and clay layer is 0 kN/m2. Correct Option

A layer of saturated clay 5 m thick is overlain by 7 m thick sand layer. The water table lies at junction of sand and clay layers and soil is saturated by capillary action upto 4 m above the junction. The saturated unit weight of sand and clay are 19 kN/m3 and 16 kN/m3 respectively and bulk unit weight of sand is 18 kN/m3. The effective stress just above the new water level is 54 kN/m2. Correct Option The effective stress at the junction of clay layer and sand layer is 130 kN/m2. Correct Option The effective stress just below the initial water level is 93.24 kN/m2. The pore water pressure at the junction of sand and clay layer is 0 kN/m2. Correct Option

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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The profile of a soil consists of a soil layer 3.9 meters below the ground surface. The weight of the soil is 19.59 KN/m³. The water table is located 1.9 below the ground surface. The angle of friction of the soil 21° and a cohesion of 28 KPa. The saturated unit weight of soil below the water table is 18.13 KN/m³. Compute the neutral stress in KPa at a depth of 3.9 meters below the ground surface.
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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.
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Determine the total vertical stress, pore water pressure, and the effective stress of the soil mass at the Centre of the clay layer and at the Centre of the sand layer for the conditions stated below.
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A dense silt layer has the following properties: e =0.406 D10= 10.1 um Capillary constant = 0.209 sq.cm Free ground water level is 8m below the ground surface. 1.) Find the height of capillary rise in the siltin meters. 2) Find the vertical effective stress at 6m depth. Assume ys = 26.51 kn/m3 and the soil above capillary action rise and ground surface is partially saturated at 79%.
ts The value of effective stress at 4 m depth for the subsoil condition as shown in figure is (Assume Yw = 10 kN/m³) Ţ T 4 m ➜ 2 m # 2 m 7XX\ Capillary saturation upto GL ¥ Sand G, = 2.60 e = 0.60
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ts The value of effective stress at 4 m depth for the subsoil condition as shown in figure is (Assume Yw = 10 kN/m³) T 4 m I 2m 2m 7XXX 7XX\ Capillary saturation upto GL Sand G, = 2.60 e = 0.60
Please solve this question taking unit weight of water = 9.81 kN/m3