Answered: A cut is made in stiff saturated clay…

A cut is made in stiff saturated clay that is underlain by a layer of sand. What should be the height of the water, h, in the cut so that the stability of the saturated clay is not lost?

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 8.16P

See similar textbooks

Related questions

Q: The soil profile at a site consists of a 5 m thick sand layer underline by a c-o soil 1 m V Yone =…

Q: Q-5: A cut is made in a stiff, saturated clay that is underlain by a layer of sand (following…

A: Draw the soil profile Find the total stress σA=γclayhc+hγwγclay=unit weight of clay=18…

Q: The primary force causing saturated water flow through a soil is capillarity. a) True O b) False

A: We have to determine is that primary force causing saturated water flow through a soil is…

Q: concept of slope stability in fine soil the factor that affect the stability and the causes of…

A: Concept of slope stability Slope stability is the potential of soil covered slopes to withstand and…

Q: 4. A 25-ft-diameter concrete caisson is to be sunk to the rock surface shown in Figure 5.17 at a…

A: Consider the free body diagram;

Q: ck soil has water table 5 m. below the ground surface. The soil has a void ratio of 0.49 and…

Q: a. Find the cohesion of the sandy clay b. Find the angle of shearing resistance

A: Tri axial compression test:

Q: a. Determine the drained angle of friction for the silty clay soil. b. Determine the shear strength…

Q: What are the Types of Rotational Slides in Isotropic Soils?

A: A slide type landslide is a down-slope material movement which occurs along a distinct surface. If…

Q: Determine the average shear stress of a trapezoidal channel having base width 6m, depth 5m and side…

A: When we assume that the soil is incoherent, and we can study the effect individually, the basic…

Q: A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n…

A: Width,B=5.8 m Depth,h=1.4 m Slope,S=0.001 n=0.013 Manning's formula of discharge- Q=A×1n×R23×S12…

Q: Find the value of degree of saturation Void ratio=D0.23 Specific gravity32.7 Water content%3D0.11

A: These values are used to calculate the different parameters of the materials. The materials which…

Q: A cut slope was excavated in saturated clay for installation of water piping system. The angle Bof…

A: Slope Stability Analysis is the soil exploration for the excavation of any soil, cutting at any…

Q: A trench needs to be constructed at a certain saturated clay underlain by a layer of sand as shown…

Q: A rock fill has a dry unit weight of 135 pcf and a relative density equal to 83%. If Gs = 2.73, what…

Q: A soil excavation was done until 4m below the surface of the soil. It was identified that the…

Q: 5) According to Lacey's theory, the silt- carrying capacity of a channel varies as (5/2) power of…

Q: An excavation has to be made in a 10 m deep clay stratum underlain by a bed of sand. In a trial…

Q: Define the types of rock.

A: There are three types of rocks as follows: Igneous rocks Sedimentary rocks Metamorphic rocks

Q: What is the effect on the eddy formation if surface roughness is more?

A: We have to mention the effect on the eddy formation if surface roughness is more.

Q: Define basic rock and acidic rock.

A: Basic rocks are the rocks that has a relatively high concentration of iron, magnesium and calcium,…

Q: excavation of a certain foundation pit, draining water causes upward seepage. The water head…

Q: (Derive the Rankine active earth pressure of a soil at a depth of z using Mohr Circles, and failure…

Q: layer of stiff saturated clay is underlain by a layer of sand (Figure 9.5). The sand is under…

A: Effective stress at 'A"σ=8.1-H18.9Pore pressure at A isuA=3.569,81

Q: A cut is made in a stiff, saturated clay that is underlain by a layer of sand (Figure 1). Find: The…

A: Total stress at A σ=(rsat)clay×2+rw×h For water pressure at A u=rw×hp =rw×4.5 Effective stress at A…

Q: A channel section 300mm×10mm is 20mm thick.find the center of gravity of the section from the back

A: Considering the channel section: Calculating the area: a1=10*20=200 mm2 a2=300-40=260 mm2…

Q: determine the thrust on the wall in kN/m. The upper surface of the fill is horizontal.

Q: 1.A shaft is to be excavated in the layered soil profile shown here. Assume Ko lateral earth…

Q: A stiff clay layer of 11.02 m thickness with a unit weight of 17.52 kN/m³ overlies a sand layer. The…

A: Given: The thickness is 11.02 m. The unit weight is 17.52 kN/m3. The depth of excavation is 8.52 m.

Q: What is lateral pressure? Also indicate the requirements for the at-rest lateral soil pressure…

A: Introduction:- Soil mass behave analogue to fluids. In case of fluids, hydrostatic pressure act…

Q: with Diameter of 3 in Cove a and Length of 7 in, with wet weight lbf of 3.44 and porosity of 0.172.…

A: step 1-

Q: Water is flowing vertically upward in a sand with a saturated unit weight of 20 kN/m3. At what…

A: Given-saturated unit weight=20 kN/m3

Q: A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n…

Q: The sliding failure at soil is :(5 1)Sliding failure (2) Tension failure (3) Collapse failure Drkea…

A: Thank you for the question . As per honour code we will answer the first question since the exact…

Q: what is confined and unconfined aquifer? What are their differences?

A: A confined aquifer is condition where the ground water table of water mass is confined between two…

Q: (2) A ground soil profile is shown in the right 120 m_ GL. Y =19 KN/1' Y-21 KN/m' z 118 m G#L…

Q: A deposit of cohesionless soil with a permeability of 0.3 mm/s has a depth of 12 m with imprevious…

A: Flow net: The graphical representation of the flow of water through the mass of soil is known as a…

Q: A rectangular channel with width = 10 meters and depth = 3 meters has a flow slope of 0.001 and…

Q: Define Primary Compression Settlement for Clays.

A: Primary Compression Settlement of clay soil can be defined as the initial settlement that takes…

Q: -UMS soil profile is given below. 3m thick dry clay is underlain by 4m thick sand. At the bottom 6m…

Q: An infinite slope of clay soil has a slope of 29 degrees. The soil has a specific gravity of 27 and…

Q: The braced cut of two layers of clay is shown in the f H; = 3 m; y1 = 14 kN/m³¸ c; = 25 kN/m? H; = 3…

A: According to given data

Q: A rectangular channel with width = 10 meters and depth = 2 meters has a flow slope of 0.001 and…

A: Given data in question width Depth Flow slope Discharge Roughness coefficient To find out Shear…

Q: Calculate the potential shear strength on a horizontal plane at a depth of 3m below the surface in a…

A: Given, Angle of internal friction= 30° Specific gravity= G = 2.7 Void ratio =e = 0.5 Degree of…

Q: What is the area of cut in square metre? what is the average cut in metres? what is the volume of…

A: Grid Method is used to find the volume of cut and fill in earthwork. In grid method we divide the…

Q: The table below contains the information about the cross – section. If the formation width is 10 m,…

Q: A stratum consists of fine sand of 2m thickness. under what head of water flow in upward direction…

A: Given data : Specific gravity (G)=2.65 Void ratio (e)=0.58 Thickness of stratum (L)=2 m

Q: A site is underlain by a soil that has a unit weight of 18.7 kN/m3 above the groundwater table and…

A: Total vertical stress increases with the depth. σz=γz Pore water pressure u = γwhw Effective…

Q: 2. What is the critical gradient of a sand deposit of specific gravity3D2.65 and void ratio=D0.5?

A: Given data : The value of specific gravity of soil GS=2.65 The value of void ratio of soil e=0.5…

Q: Explain the Types of Rotational Slides in Isotropic Soils.

A: The types of rotational slides in isotropic soils are as follows: 1. Slips. 2. Multiple rotation…

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 cut is made in stiff saturated clay that is underlain by a layer of sand. What should
be the height of the water, h, in the cut so that the stability of the saturated clay is
not lost?
Saturated clay
Pat 1900 kg/m
H= 5 m
3.0 m
Sand
2 m
Pat
1800 kg/m

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

VIEW

Step 2

VIEW

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

A soil along a horizontal plane at a depth of 4 m in a deposit of sand having the following properties: Angle of internal friction, ∅ = 35° ; Dry unit weight, yd = 17 kN/m3 ; Specific gravity, Gs =2.7. Assume the ground water table is at a depth of 2.5 m from the ground surface. Find the change in shear strength in kPa when the water table rises to the ground surface.
1. Side slopes for rock fill 1V:2H. Calculate the minimum crest width of a breakwater using B = 3*kΔ*(W/γa)1/3 . Given data: Stone weight = (8) t, Specific weight = 2,7 t/m3, Layer thickness coefficient =1,00 and Porosity percentage = 37 2. For cubed shaped stone (or concrete), determine dimension of the stone for weight: W = (10+a) t, specific weight: γa = 2,4 t/m3
An embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 9from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the stress in kPa at depth of 20 m. Show free body diagram a.21.6 b.372.8 c.192.8 d.62.5
A 10-m-thick layer of stiff saturated clay is underlain by a layer of sand (Figure 9.28). The sand is under artesian pressure. A 5.75-m-deep cut is made in the clay. Determine the factor of safety against heaving at point A.
A 10 m clay stratum is overlaying a rock stratum. If water table is at the ground surface, calculate the overburden soil pressure at the middle of the clay layer using the ff. properties of clay: ∂sat = 17.95 kn/m3, e = 1.1 , LL = 60%
Consider a farm irrigation ditch in a loam soil having the following dimensions: bottom width= 0.6 m, total depth, 0.5 m, side slopes= 1.5 horizontal to 1 vertical, and depth of water= 0.4 m. If the bottom of the ditch has a uniform slope of 2 m/km, and if the bottom & sides are kept smooth and free from weeds, what will be the mean velocity(m/s) of flow and discharge in m^3/s? Use n = 0.02. Find the shear stress at the watersurface, at half flow depth, and the canal bottom in N/m2 (or Pa). What is the shear velocity in m/sec?
The soil in a deposit underlying an area where a level ground surface exists has a unit weight of 22 kN/m3. Determine the principal stresses o1 and oz at a depth of 5 m below the soil surface if the lateral pressure is 0.50 of the vertical pressure. Adjust your answer to ZERO decimal places. 01 = kN/m2, 03 = kN/m2
Given data: Depth of Clay layer =4Depth of Sand layer=2unit weight of clay kN/m3=23unit weight of sand kN/m3 =21Ø in both layers=30C´= 0
An embankment consists of clay fill for which c=25 kPa and angle of internal friction is 260 9from consolidated undrained test with pore pressure measurement) The weight of fill per unit volume is 18.64 kN/m3. Compute the stress in kPa at depth of 20 m. a. 192.8 b. 62.5 c. 21.6 d. 372.8
4. Which of the following nearly gives the transmissibility of the soil when the water table is at the ground surface?a. 12.752 sqm/day b. 14.034 sqm/day c. 16.664 sqm/day d. 14.034 sqm/day5. If the void ratio is 0.60 and the hydraulic gradient is 0.0018, which of the following most nearly gives the interstitial velocity of water moving through the soil? a. 0.0217 cm/hr b. 0.0104cm/hr c. 0.0374 cm/hr d. 0.0217 cm/hr
A smooth transition section connects two open channels of the same width, as shown in Figure P10.15. The water depth decreases so that the ratio of the downstream to upstream depths Y2/Y1 = 0.5. If the upstream Froude number F1 = 0.35, determine the downstream Froude number F2, and the ratio h/Y1.
An embankment for road traffic is required to be constructed with the followingdimensions :Top width = 8 m, height = 4 m, side slopes= I V : 1.5 HorThe unit weight of soil under the worst condition is 21 kN/m3. The surcharge load on theroad surface may be taken as 50 kN/m2. Compute the vertical pressure at a depth of 6 mbelow the ground surface at the following locations:(i) On the central longitudinal plane of the embankment,(ii) Below the toes of the embankm