4: For the soil profile shown in Fig. (3), a steady vertical flow occurring. Having the effective vertical stress at point (A) = 52 kPa, find: (answer 4 only). a) Total head and pressure head at points (A, B, C). b) Rate of flow in (m³/hr.m²). c) Discharge velocity and seepage velocity for soils 1 and 2. V=Vj d) Value and direction of seepage force on a soil mass of 0.1 m³ volume at mid-depth of soil (1). e) Factor of safety against boiling. Fig.3 E 2 3m 6 m Co B Soil-1 k = 1.0 m/sec Y sat = 18.0 kN/m³ e = 1.2 Soil-2 k = 0.5 m/sec Ysat = 20.0 kN/m³ ба 52 на e=0.6 Datum ¥ W.T.L G.S.L Piezometer

4: For the soil profile shown in Fig. (3), a steady vertical flow occurring. Having the effective vertical stress at point (A) = 52 kPa, find: (answer 4 only). a) Total head and pressure head at points (A, B, C). b) Rate of flow in (m³/hr.m²). c) Discharge velocity and seepage velocity for soils 1 and 2. V=Vj d) Value and direction of seepage force on a soil mass of 0.1 m³ volume at mid-depth of soil (1). e) Factor of safety against boiling. Fig.3 E 2 3m 6 m Co B Soil-1 k = 1.0 m/sec Y sat = 18.0 kN/m³ e = 1.2 Soil-2 k = 0.5 m/sec Ysat = 20.0 kN/m³ ба 52 на e=0.6 Datum ¥ W.T.L G.S.L Piezometer

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Stresses In A Soil Mass

Section: Chapter Questions

Problem 8.14P

See similar textbooks

Related questions

Q: For a falling head permeability test, these values are given: Length of the soil specimen = 200 mm…

A: Length of the soil specimen = 200 mmArea of the soil specimen = 1000 mm2Area of the standpipe = 40…

Q: Q2) Figure 2 shows the zone of capillary rise within a clay layer above the groundwater table. For…

A: Given data Dry sand Clay Rocks Zone of Cappilary rise Void ratio Specific gravity

Q: Q2) For the soil profile shown below find kz and kx. 1.5m K-10° cm/sec K-2*10* cm/sec 2m K=10°…

A: Given :-

Q: For a falling head permeability test, the following are given. Length of specimen is 380 mm, are of…

Q: 6. The following data are for a falling-head permeability test: • Length of the soil sample = 140mm…

A: Hydraulic conductivity for falling head permeability test, k =aLAtlnh1h2 -----(1) where a = Area of…

Q: Question 2 A sand layer is under artesian pressure as shown in Figure Q2. The water depth in the…

Q: The coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/sec. Estimate the…

A: GIVEN - Coefficient of permeability of sand (k) = 0.03 cm/sec Void ratio (e) =0.62…

Q: Consider the stratified soil sample shown below with k₁ = 0.01 cm/sec, k₂ = 0.02 cm/sec, H₁ = 10 cm,…

Q: 1. (30 pts) The soil profile shown below consists of 10 meters of sandy silt overlying gravel. The…

A: Step 1:Step 2: Step 3: Step 4:

Q: A soil sample with a layered soil is placed in a tube 3m long. water is allowed to flow in the one…

A: The detailed solution and explanation are attached below.Explanation:Step 1: Step 2:

Q: 4 m 4m 4 m Datum V Datum 4m- 1 m B 1m B B atum 1 m Case I Case II Case lII 5, C. 4. 2.

A: The given data is: Datum in each cases. Coefficient of permeability of soil = 2 cm/sec Cross…

Q: Water flows at the rate of 4 x 10-2 cm³/s through a cylindrical sand sample with a diameter of 10 cm…

A: Discharge,Diameter of sand sample, Coefficient of permeability,

Q: Now, assume groundwater table is far, referring to the Figure B, calculate the dry unit weight for…

A: From the above stress diagram, it is clear that the water table is 2 m below the depth of the…

Q: Q4 A 0.7m long soil specimen is subject to a steady-state flow, as shown in Figure Q4. The saturated…

A: Given data in question Dimensions Unit weight of soil To find out Total stress in kPa / kN/m3…

Q: Quize (3): A soil sample is subjected to an all-round pressure of 100 kN/m, the pore water pressure…

A: Given- All round pressure-σ3=100 kN/m2pore water pressure-u=93 kN/m2pores water pressure is…

Q: A layered soil is shown in following figure. a) Estimate the hydraulic conductivity for flow in the…

A: Given data of soil Assume K1 = 10-3 cm/sec K2 = 2 *10-4 cm/sec K3 = 10-5 cm/sec K4 = 2 *10-3…

Q: 1) A river is 100 m wide and 8 m deep. The bed slope is 1 m per 2 km. The median sediment size is 10…

A: Since we only answer first part, we’ll answer the first one. Please resubmit the question and…

Q: A vertical sand column of length 100 cm and cross section area of 150 cm² is allowing the water to…

A: Calculate the (a) rate of flow, (b) the Darcy velocity and (c) the average velocity.

Q: The figure shows layers of soil in a tube that is 100 mm x 100 mm in cross section water is supplied…

Q: 2. Consider the stratified soil deposit shown in the figure. There are four layers, 3m thick each,…

Q: P 6: Two soil of same cross sectional and length, a constant head test is performed on the soils as…

A: permeability of soil 1 =kand permeability of soil 2 =4kaverage permeability…

Q: Q4 A 0.7m long soil specimen is subject to a steady-state flow, as shown in Figure Q4. The saturated…

Q: ● Peizometric reading at point C. Total head loss. Effective stress at point B. ● 4 m B K-1.0 m/ sec…

Q: 34. Write the Rouse's equation for distribution of suspended sediment in the vertical of a channel…

Q: 3. (Bonus question) In the experimental setup shown in Figure 3, water flows through soils 1 and 2…

Q: For a falling head laboratory test, the following are the given values: 480.0 mm Length of soil…

A: given data,length of soil specimenL=480 mm=48 cminitial headh1=700 mm=70 cmfinal headh2=395 mm=39.5…

Q: The following data are for a variable head permeability test: Area of soil specimen=1200mm² Length…

Q: A soil sample 10 cm in diameter is placed in a tube Im long. A constant supply of water is allowed…

Q: Consider the three layered soil strata as shown in the figure below. The thickness and coefficient…

A: We have to determine the total head loss in the given three layers as per the given data in the…

Concept explainers

Principles of Seepage

In hydrology, when water flows down in a pore or crack of unsaturated soil due to gravity, the deep layer of soil is called seepage. It is the slow movement of water in the soil layer. Seepage is mainly found near hydraulic structures and is responsible for the stability of earthen-type hydraulic structures.

Question

Transcribed Image Text:4: For the soil profile shown in Fig. (3), a steady vertical flow occurring. Having the effective vertical stress at point (A) = 52 kPa, find: (answer 4 only). a) Total head and pressure head at points (A, B, C). b) Rate of flow in (m³/hr.m²). c) Discharge velocity and seepage velocity for soils 1 and 2. V=Vj d) Value and direction of seepage force on a soil mass of 0.1 m³ volume at mid-depth of soil (1). e) Factor of safety against boiling. Fig.3 E 3m w 9 C. B Soil-1 k = 1.0 m/sec Y sat = 18.0 kN/m³ e = 1.2 Soil-2 k = 0.5 m/sec Ysat = 20.0 kN/m³ 6₁52² e=0.6 Datum ¥ W.T.L G.S.L Piezometer

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step by step

Solved in 5 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

3. (Bonus question) In the experimental setup shown in Figure 3, water flows through soils 1 and 2 upward under constant head. Assume c-c as the datum. (1) Find the total and pressure heads at c-c; (2) If the head loss after flowing through Soil 2 is 30% of the total head difference, determine the total and pressure heads at b-b; (3) Given the coefficient of permeability of Soil 2 as 0.05 cm/sec, determine the rate of discharge; (4) Calculate the coefficient of permeability of Soil 1. 30 cm Soil 1 Soil 2 Z=0 Figure 3 30cm 30 cm 20 cm
Soil sample and flow condition are shown in the following figure: Inflow C 2m Outflow Soil ↑ B A Ysat of sand = 20 kN/m³, Yw= 20 kN/m³ (i) Find the head, h required to cause quick condition. h 2m 10m Compute the seepage force per unit volume at quick condition. Use cross-section area of tube as 1 m². (iii) A student accidentally broke the left hand riser tube to the point C at an elevation 2 m above point A. Assuming that the water level is now maintained at C, compute the new hydraulic gradient, effective stress at elevation A and seepage force at elevation A.
a. For each of the cases, I, II and III, determine the pressure elevation and total heads at points A, B and C. Use the given datum in each case. b. If the coefficient of permeability of the soil in each case is 2 cm/sec, and the cross sectional area is 10 cm2 calculate the water flow rate through the soil. Assume head loss is only through the soil sample.
Please give me both a and b right solutions
Q.1. The figure below shows the flow net for seepage under a concrete dam. The is silty sand with coefficient of permeability of 4X104 cm/sec, a void ratio of 0.6 and specific gravity of 2.7. The height of water upstream is H=( 6+) (a) Determine the flow rate under the dam in m/day per m length of the dam. (b) Determine the water pressure distribution at the base of the dam. (Select 3 points under the base. Comment on your results. m (where X is your group number). (c) From (b), calculate the resultant uplift force and its location from the upstream face of the dam. Also, calculate the weight of the dam to prevent uplift using a factor of safety of 5. (d) What is the factor of safety against piping? Is the dam safe? (e) Calculate the total vertical overburden stress, pore water pressure and the effective vertical overburden stress at Points A and B. Comment on your results. H 17.5 m 1.25 m x B 4 m Impervious clay
Q4 A 0.7m long soil specimen is subject to a steady-state flow, as shown in Figure Q4. The saturated unit weight of the soil is 20 kN/m³. Determine the following: Water 0.3 m 0.8 m А 0.3 m Datum 0.4 m Y Figure Q4 a) Total head (m) at point A, B and C. b) Elevation head (m) at point A, B and C. c) Porewater pressure head (m) at point A, B and C.
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
A falling head hydraulic conductivity test is performed on a sample of soil. The stand pipe having a diameter of 0.20cm is observed and it takes 60 seconds for the water to drop by 50 cm from an initial hydraulic head of 90cm. The sample has a length of 20cm, and a diameter of 4cm. a.Find the coefficient of permeability (cm/sec) b.Solve for the hydraulic gradient c. Compute the rate of flow of water in the soil. (cm' /sec.) 0.20 cm 6 s TAND PIPE 50cm Acm 不 20am -: SOIL
Please show a complete solution and avoid rounding off intermediate values.
Question attached
5. The coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/sec. Estimate the coefficient of permeability at a void ratio of 0.48. Using Casagandre equation Using Kozeny-Carman equation Find the difference in the rate of flow using the results of “a” and “b” if i = 0.70 and A = 0.6 m2.
Correct answer please.