1. A soil deposit is shown in the figure below. The ground water table, initially at the ground surface, waslowered to a depth 25ft below the ground. After such lowering, the degree of saturation of the sand abovewater table was lowered to 20%.Water tableGround surfaceYsat = 135 pcfYa = 116 pcfSand50 ft25 ftClayYsat = 120 pcfa) What is the vertical effective pressure at the midheight of the clay layer before lowering of the watertable, in psf.b) What is the vertical effective pressure at the midheight of the clay layer after lowering of the watertable, in psf.c) What is the vertical effective pressure when there is no water in the sand layer, in psf.

Answered: Image /qna-images/answer/992a4e3b-f9e5-466e-ac0a-682cf6cd68c4.jpg

1. A soil deposit is shown in the figure below. The ground water table, initially at the ground surface, was lowered to a depth 25ft below the ground. After such lowering, the degree of saturation of the sand above water table was lowered to 20%. Water table Ground surface Ysat = 135 pcf Ya = 116 pcf Sand 50 ft 25 ft Clay Ysat = a) What is the vertical effective pressure at the midheight of the clay layer before lowering of the water table, in psf. b) What is the vertical effective pressure at the midheight of the clay layer after lowering of the water table, in psf. c) What is the vertical effective pressure when there is no water in the sand layer, in psf.

1. A soil deposit is shown in the figure below. The ground water table, initially at the ground surface, was lowered to a depth 25ft below the ground. After such lowering, the degree of saturation of the sand above water table was lowered to 20%. Water table Ground surface Ysat = 135 pcf Ya = 116 pcf Sand 50 ft 25 ft Clay Ysat = a) What is the vertical effective pressure at the midheight of the clay layer before lowering of the water table, in psf. b) What is the vertical effective pressure at the midheight of the clay layer after lowering of the water table, in psf. c) What is the vertical effective pressure when there is no water in the sand layer, in psf.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

or the soil profile shown in the Figure: a. Calculate the effective stress at point C. b. How high should the water table rise so that the effective stress at C is 200 kN/m²? Dry sand Yory-165 AN 6m Groundwater table Saturated sand 13m 7-19.25 AN Dry sand Satted sand Clay
A soil profile consisting of three layers is shown in Table and Figure below i. Calculate the values of σ, u and σʹ at points A, B, C, and D. ii. Calculate the effective stress at c when water table drops by 1 m (consider γb= 15.5 for layer 2). iii. Calculate the effective stress at c when water table rises by 1 m above layer 1 due to flooding. (consider γsat= 16.5 for layer 1). Layer no. Thickness Soil parameters 1 H1 = 3.5 m γd = 15.5 kN/m3 2 H2 = 2.5 m γsat = 18 kN/m3 3 H3 = 3 m γsat = 18.5 kN/m3
Calculate the change in total vertical normal stress(σ)and in effective stress(σ′)at a depth of10 m. in a saturated clay layer if the water table is dropped from the ground surface to a depth of20 m. below the ground surface. The clay has a water content of35%, S=100%andGs=2.75. Assume that no change in degree of saturation or water content occurs when the water table is lowered. Please type answer no write by hend.
A soil profile consists of sand (5-m thick) which overlies a layer of clay (4-m thick). Ground water table is located at the interface of the sand and clay. The effective stress at the bottom of the clay layer was determined. If the water table rises to the top of the ground surface, what is the change in the effective stress (in kPa) at the bottom of the clay layer? For sand layer: Void Ratio = 0.82, Specific gravity = 2.75, Degree of Saturation = 0.76 For clay layer: Void Ratio = 1.09, Specific gravity = 2.76
A soil profile is shown in figure below. Calculate the following:a. Effective stress at point A in kPa.b. Effective stress at point B in kPa.c. Effective stress at point C in kPa.
Dry Sand H, Groundwater Table Clay Refer to the soil profile shown. Given H1 = 8.85 m., and H2 4.01 m If the ground water table rises by 2.19 meters, determine the change in effective stress (numerical value only, in kPa) at the bottom of the clay layer Properties of dry sand Gs = 2.51, e = 0.65 Properties of clay. Gs = 2.72, e = 0.84. Round off to two decimal places. Activate Windows Go to Settings to activate Windows. < Question 18 of 20 2 A Moving to another question will save this response. ASUS C8O CD 80 5n E R- T Y H]
Q: For the soil profile shown in figure. Determine: The effective stress (o') at level (A). Soil 1 k = 0.2 cm/sec Y sat = 19 kN/m³ Soil 2 k = 0.4 cm/sec Y sat = 21 kN/m³ Datum D EL + 2.0 m EL 0.0 m EL - 1.0 m EL - 4.0 m EL - 10.0 m
si
. A soil profile is shown in figure below. Dry sand Yay- 165 KNm 6m Groundwater table Saturated sand 13m Yu 19.25 kN/m" Dry sand Saturated sand Clay Calculate the following: a. Effective stress at point A in kPa. b. Effective stress at point B in kPa. c. Effective stress at point C in kPa.
For a certain soil, the angle of internal friction is 30°. The coefficient of active and passive pressure. (a) 0.6, 2.4 (c) 0.5, 0.8 (b) 0.4, 1.2 (d) 0.33, 3
Please do it in a complete way, so I can easily understand it. Thank you to all of you
A layered soil deposit is of dimension 3m x 2m x 3m. There are three different soils, each of 1 m thick as shown. The coefficient of permeability of these soil layered are shown in figure. The water is flowing in the z-direction under the head loss of 5.15 m. The quantity of flow (in m³/hr) would be 1m 1 m 1m 2m k₂ = 5 x 10 m/s k₂=2.5 x 10 m/s k₂ = 1.25 x 10³ m/s 3 m