Answered: A stratum consisting of fine sand is…

A stratum consisting of fine sand is 3cm thick. Under what head of water flowing in an upward direction will develop a quick condition? Consider specific gravity of soil is 2.62

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 8.13P

See similar textbooks

Related questions

Q: The soil profile at a site consists of 2 m of sand at the groundlevel, underlain by 6 m of clay,…

A: Given data: coefficient of consolidation of 0.0014 cm2/s. settlement was 160 mm in the first year.…

Q: max e min . A given cohesionless soil has e = 0.85 and : 0.50. In the field, the soil is compacted…

Q: 8. Calculate the active lateral stress ratio of a soil with a friction angle of 41 degrees.

A: Friction angle (Φ) = 41° Determine the active lateral stress ratio of the soil.

Q: Question (3) (30 pts) A soil profile beneath a lake consists of 8 m thick sand layer underlain by a…

A: See explanation Explanation:Step 1:Step 2:Step 3: Step 4:

Q: The profile at a site consists of 5m of sand overlying 10m of compressible clay, which in turn…

A: The excess pore water pressure is developed in the clay layer by immediately placing the surcharge…

Q: A 3m deep sand layer has a specific gravity of 2.68 and a void ratio of 0.60. Under this layer is a…

A: step 1-

Q: In AASHTO system, the fine grained soil is clay if: O a. LL has any value and Pl s 10 O b. LL > 41…

Q: The soil profile was consists of 4 m sand at the top and 5 m clay at the bottom. The specific…

A: Solution:-

Q: Given Well graded sand Specific gravity of soil = 2.65 %3D Void ratio = 0.57 Porosity = 36.5% %3D…

A: To Determine Dry unit weight of the soil.

Q: 12. A glass container with previous bottom containing fine sand in loose state, with void ratio of…

Q: The soil profile presented in Figure Q3 shows a borehole at a site where the water level is at 4m…

A: Calculate the unit weight of every soil layer to calculate stress: Step 1: Calculating unit…

Q: 7. Assume the water table drops 3 feet for the soil profile shown. What settlement will occur?…

Q: A soil layer consists of 4 meters upper dry sand with a void ratio of 0.45 and a specific gravity of…

A: Given data Dry Sand e = 0.45 Gs = 2.70 Clay e = 0.9 Gs = 2.75 Water table 4m below the ground…

Q: The soil profile at a site consists of 5 m sand underlain by clay layer. The ground water table is 2…

Q: A uniform soil deposit has a dry unit weight of 15.6 kN/m³ and a saturated unit weight of 17.2…

Q: A soil profile consists of 10-m-thick fine sand of effective size 0.15 mm above a very thick layer…

Q: The profile at a site consists of 5 m of sand overlying 10 m of compressible clay, which in turn…

A: The excess pore water pressure developed immediately after placing the stress of 200 kPa is…

Q: Consider the soil profile shown in the figure below, and an initial groundwater depth of 5 feet…

A: The values and diagram given in the question are as follows: Initial groundwater depth=5 ft (below…

Q: 1.) The soil profile consist of 10 m layer of sand underlain by a 5.5 m layer of clay. The location…

Q: What is the shearing strength of soil along a horizontal plane at a depth of 4 m in a deposit of…

A: Given :

Q: A layered soil has the following details: H₁ = 3ft, k₁ = 10-4 cm/sec : H ₂ = 4ft, k₂ = 3.2x10ˉ²…

Q: SITUATION 6: A deposit of clay underlain a 4.5 m thick sand Degree of saturation of sand is 37% and…

A: Given data Thickness of sand = 4.5m Void ratio of sand (e) = 0.52 Degree of saturation of sand…

Q: 2. Consider the following soil profile. A wide fill applies a surface load of 3 ksf. Assume one-…

Q: The coefficient of active earth pressure for a loose sand having an angle of internal friction of…

Q: What is the equivalent coefficient of permeability (k) for soil layers of k2 and k3? where k2= 1.75…

A: The coefficient of permeability or hydraulic conductivity shows the flow of water or any other…

Q: A ground profile consists of 2.0 meters silty sand underlain by 3.0 meters of clay. The ground water…

Q: Effective Stresses in Soil Problem 3. A 4m thick of clay is overlain by 4m thick of sand. The ground…

Q: Calculate the soil density in PCF to be used in ground support system loading calculations for the…

A: Both the soils are present below the water table which means the soil is saturated. The formula to…

Q: A soil formation is composed of 5 m thick clay and 5 m thick sand being the sand above the clay. The…

A: Given data- Soil Formation-

Q: soil has the following profile with depth (sand layer over clay layer): z = 0-5 ft, YŁ= L0 pcf; z =…

Concept explainers

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

A stratum consisting of fine sand is 3cm thick. Under

what head of water flowing in an upward direction will develop a quick condition? Consider

specific gravity of soil is 2.62

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

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

The soil profile at a site consists of 5 m sand underlain by clay layer. The ground water table is 2 m below the ground surface. Average void ratio of sand is 0.52. Water content of clay is 42% and degree of saturation of sand above water table is 37%.Assume specific gravity of sand and clay is 2.65. 1. Compute the unit weight of clay. a. 19.82 kN/m³ b. 17.47 kN/m³ c. 18.62 kN/m³ d. 16.20 kN/m³ 2. Compute the total pressure 10 m below the ground surface. a. 185.41 kPa b. 160.25 kPa c. 140.53 kPa d. 153.62 kPa 3. Compute the effective pressure 10 m below the ground surface. a. 106.94 kPa b. 96.52 kPa c. 115.62 kPa d. 108.36 kPa
I need the answer as soon as possible
12. A glass container with previous bottom containing fine sand in loose state, with void ratio of 0.08, is subjected to hydrostatic pressure from underneath until quick condition occurs in the sand. Specific Gravity of sand particles = 2.65 Area of cross-section of sand sample = 12 cm2 Height of sample = 10cm Compute the critical gradient of the sand under quick sand condition. Compute the head of water to cause quicksand condition. Compute the seepage force acting from below.
A 3m deep sand layer has a specific gravity of 2.68 and a void ratio of O.60. Under this layer is a 2.5m deep clay profile with a specific gravity of 2.7 and a moisture content of 30%. The water table is observed at 1m below the ground surface. Determine the effective soil pressure at the midweight of clay.
Answers a) 0.917 b) 9.17 cm c) 1.08 N
Soil mechanics
Consider the soil profile shown in the figure below, and an initial groundwater depth of 5 feet below the ground surface. Assuming the soil above the water table is dry, then Ground Surface Ya = 115 Ib/ft G.= 2.65 5 ft SAND 15 ft Ysat = 120 Ib/ft3 e,- 1.1 C = 0.5 C, = 0.05 o- 2.8 ksf 15 ft CLAY ROCK a. The in-situ effective vertical stress in the middle of the clay layer is psf. b. If a uniform permanent load of 500 psf is applied on the ground surface, the estimated primary consolidation settlement of the clay layer is inches. c. If the groundwater table is lowered to the top of the clay layer at a final depth of 20 feet below the ground surface after the consolidation settlement in part (b) is completed, the effective vertical stress increase in the middle of the clay layer is psf.
The profile at a site consists of 5 m of sand overlying 10 m of compressible clay, which in turn overlies a dense sand. The water table is at the top of the profile. The total unit weight of the top sand is 19 kN/m3, and that of the clay is 18 kN/m3. The cv of the clay is estimated to be 5 x 10-3 cm2/sec. Initially the clay is normally consolidated. It is planned to place a temporary fill that will exert a vertical load of 200 kPa over the entire site. How long must the fill be in place so that, after it is removed, the maximum past pressure at every point in the clay is at least 50 kPa larger than the vertical effective stress that existed before the fill was placed?
GEO NO. 2 SOLVE AND SHOW THE COMPLETE SOLUTION.
A ground profile consists of 2.0 meters silty sand underlain by 3.0 meters of clay. The ground water table is 3.0 meters below the ground surface. The sand has a unit weight of 14 kN/cu.meter. The clay has a unit weight of 16 kN/cu.meter above the water table and 20 kN/cu.meter below the water table. Determine the total soil stress at the bottom of the clay layer.
A soil formation is composed of 5 m thick clay and 5 m thick sand being the sand above the clay. The ground water table (GWT) is located at 2 m below the ground surface. 40 kPa 2 m Sand Ydry = 17.66 kN/m^3 VGWT Sand 3 m Y sat = 20.93 kN/m^3 LI = 64% PL = 20% w = 40% 5 m Clay eo = 0.60 G. = 2.60 1. Calculate the primary compression index. [ Select ] 2. Calculate the primary consolidation settlement of the normally consolidated clay layer if there is a surcharge of 40 kPa acting on the ground surface. [ Select] 3. Calculate the secondary settlement of the clay layer 5 years after the completion of the primary consolidation settlement. Time for completion of primary settlement is 2 years. Use C, = 0.02. [Select ]
Question (3) (30 pts) A soil profile beneath a lake consists of 8 m thick sand layer underlain by a 4 m clay layer. The water level is 3 m above the top of the sand. The saturated unit weight of the sand is 20 kN/m³ and that of the clay is 19 kN/m³. The unit weight of water is 9.81 kN/m³. i. (10 pts) Plot the water-soil system and label the soil names and unit weights on the diagram. At the centerline of the clay layer compute the: ii. (10 pts) Total vertical stress. (10 pts) The total Horizontal stress (Assume K. = 0.61)