A trench needs to be constructed at a certain saturated clay underlain by a layer of sand as shown in Figure BELOW. In order to maintain the stability of the saturated clay, Y at = 17.5 kN/m? Sm 3.4 m 2 m Y sat = 15 kN/m E Saturated clay O Sand

A trench needs to be constructed at a certain saturated clay underlain by a layer of sand as shown in Figure BELOW. In order to maintain the stability of the saturated clay, Y at = 17.5 kN/m? Sm 3.4 m 2 m Y sat = 15 kN/m E Saturated clay O Sand

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter13: Slope Stability

Section: Chapter Questions

Problem 13.5P

See similar textbooks

Related questions

Q: Compute the vertical pressure at a depth of 6 m below the ground surface at the following locations:…

A: Given data Top width = 8 m, height = 4 m, side slopes= I V : 1.5 Hor unit weight of soil, γ=21kN/m3…

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: An embankment for road traffic is required to be constructed with the following dimensions :Top…

A: Solution : From above question we get,

Q: A 15 m thick rock slab (density: 1800 kg/m3) sits on a failure surface along the side of the valley.…

A: Given that, Ysat=10000 N/m2 Yw=1000 kg/m3 ϕ'=39oC'=0 h=2 m z=15 m The objective is to determine the…

Q: An embankment is to be constructed with a granular soil (bulk unit weight = 20 kN/m³) on a saturated…

Q: (c) A clay layer of 10 m thick with an average bulk unit weight y = 18.5 kN/m³ overlies a sand…

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: Calculate the theoretical depth of penetration 32 kN/m 3.5 m 90 Clay C = 12 kN/m²

A: Consider the given data H=3.5mP=32 kN/mConsiderqu=15 kN/m2 So here now, P=2q-rH =2×15 =30 kN/m2

Q: A 4 m high embankment with a top width of 5 m and side slopes of 1:1, has to be constructed by…

A: Solution:- Volume of embankment, Vembk=Area×Length =12×5+13×4×1000 =36×103 m3…

Q: Civil Engineering The cohesion (c), angle of internal friction (0) and unit weight (y) of a soil are…

A: Given- Cohesion of the soil-C=15 kPaangle of internal friction-ϕ=20ounit weight of the soil -γ=17.5…

Q: A 10-m-thick layer of stiff saturated clay is underlain by a layer of sand. The sand is under…

Q: Question 4.11 Consider the radial flow problem shown in top view (right), where the shaded area…

Q: An unsupported excavation is made to the maximum possible depth in a pure clay soil having density…

Q: 4. What is the culvert bottom slope denoted as? a) sl b) SL c) So d) sL

A: The culvert bottom slope denoted as c) So Other , options doesn't exist. Correct option is C

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 cut slope of h= 7m was excavated in a saturated clay with a slope of angle beta = 45 degrees with…

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: A canal is excavated to a depth of 4 m below ground level in a soil having C = 15 kN/m2, $ = 18°,…

Q: An infinite soil slope with an inclination of 35° is subjected to seepage parallel to its surface.…

Q: 2 An unsupported excavation is made to the maximum possible depth in a clay soil having Y₁ = 18…

Q: A rectangular channel has a base width of 7 m and a depth of 2.5 m carries a discharge of 21.81 m…

Q: .Draw the lateral earth pressure distribution with depth. Calculate the depth of penetration (D). .…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

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: 3.24 Refer to the 15-ft high embankment shown in Figure 3.8. Embankments are generally constructed…

A: Given information:

Q: For a railway track 7 m high embankment is required. The clay to be used for the embankment was…

Q: Calculate the maximum depth at which the depth of a circular tunnel can be dug in a k with the…

A: Stress concentration: A stress concentration is a part of an object where the stress is much higher…

Q: An excavation is proposed for a square area near the bend of a river, as shown in Figure P6.9. It is…

A: From the given figure the seepage will be from shaded portion only. The area of the excavation is…

Q: For the dam shown, determine the factor of safety against sliding and overturning. Use unit weight…

Q: (Use The Figure (10.20) to find the solution of this question) Two embankments loads on silty clay…

A: Boussinesq published equations in 1885 that might be used to determine the state of stress in a…

Q: In a clayey soil having 50 kN/m² as unit cohesion and 18 kN/m³ as unit weight, an excavation is made…

A: Given data- Cohesion C=50 kN/m2Unit weight γ=18 kN/m3Taylor's Stability number Sn=0.261To…

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: 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: An embankment for road traffic is required to be constructed with the following dimensions : Top…

A: Solution: q= unit weight x depth=21x4 =84 kN/m2 Vertical stress= q x Iz z=6m a=8m b=20m with 1V:1.5H…

Q: 7. Calculate the average permeability of a formation that consists of four beds in series, assuming:…

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: An unsupported excavation is made to the maximum possible depth in a clay soil having Y₁ = 18 kN/m³,…

Q: An unsupported excavation is made to the maximum possible depth in a clay soil having Y, = 18…

A: Given data- Clay soil-unit weight γ=18 KN/m3cohesion C=100 kN/m2Angle of friction-ϕ=30oTo…

Q: For the trial slip circle shown in Figure Q4, calculate the factor of safety. Weight of soil = 346…

A: Hello dear this is the solution of your problem The answer is found to be Factor of safety=1.1445…

Q: Q5 a) The discontinuity characteristic mostly dominates failure in the rock mass. Thus, the…

A: a) Rockfall: It is defined as the detachment of one or few rocks from a steep slope of mountain…

Q: A trench was cut in a clay slope as shown in the figure. When the trench reached a depth of 3 m, the…

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

Q: An excavation is to be made in a layer of clay which is 10 m thick and underlain by a sandstone…

A: Given: The thickness of clay layer is 10 m. The saturated unit weight of clay is 21 kN/m3. The water…

Q: A 10 m high slope of dry clay sol (unil weight = 20 N/m) with a slope angle of 45 and the circular…

Q: Q.1 The factor of safety against wedge failure along the interface of a soil mass resting on an…

A: Given data: C=4 kN/m2ϕ=40∘γ=18 kN/m3

Question

Design the appropriate height of the cut for the trench

A trench needs to be constructed at a certain saturated clay underlain by a layer of sand as shown in Figure
BELOW. In order to maintain the stability of the saturated clay,
Y at = 17.5 kN/m?
Sm
3.4 m
2 m
Y at = 15 kN/m
X Saturated clay
Sand

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

Given Data

VIEW

Calculation of stable depth of cut

VIEW

Step by step

Solved in 2 steps with 2 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

A vertical cut is to be made in a purely cohesive clay deposit (c'=30kPa, φ'=0deg, γ=16kN/m3). Find the maximum height of the cut which can be temporarily supported. From the stability chart, the stability number can be used as 0.261.
5. Saturated silty clay encountered in a deep excavation is found to have a water content of 28%. Determine unit weight of the clay in kN/m3. Assume Gs=2.7
A level site underlain by fully saturated clays is cut over a few days as shown in the figure below. The water table is located at the ground surface across the site. Determine the resisting moment in kN.m for the circular slip surface depicted in the Figure below shortly after excavation. Consider the soil wedge above the circular slip surface as a single free body, whose plane area is equal to 100 m2 and the centre of gravity of the soil wedge is given at Point C.
A 9m cut slope is shown in the figure. The unit weight of soil is 17kN/m3. Friction angle and cohesion along the rock surface are 20 degrees and 24kPa respectively. The slope makes an angle of 300 from horizontal and the failure plane is at 150. Determine the developed frictional force on the failure plane.
A 30° slope has a height of 10 m as shown in the figure below. The soil in the slope has the following parameters c = 20 kPa, ϕ = 0°, γ = 18 kN/m . Calculate the factor of safety for the slip surface shown in the figure.
A cut slope of h= 7m was excavated in a saturated clay with a slope of angle beta = 45 degrees with the horizontal. The Previous explorations showed that a rock layer was located at a depth of 14 m. Given that, c = 60 kN/m² and unit weight = 17 kN / (m ^ 3) . Determine the factor of safety.
A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n = 0.013. 1. What is its yield in cubic meter per second? 2. What savings in earth excavation could be realized by using most economical proportion? 3. What savings in lining per meter length could be realized by using most economical proportion?
A cut is made into a homogeneous soil as depicted in the figure below, at an angle of 60° with the horizontal. Calculate the resisting shear force in kN along the failure plane given that the shear force applied by the overlying soil wedge is 120 kN. The failure plane is at an angle of 40° from the horizontal direction and the ground water level is below this plane. Assume drained conditions for this question.
A braced cut is carried out to 10 m depth at a site where the soil consists of 4 m of sand ( = 17.0 kN/m3, = 33) at the top underlain by 6 m of clay ( = 18.5 kN/m3, c = 35 kN/m2). a. What would be the average value of cohesion and the unit weight for the equivalent homogeneous soil profile? b. Show the lateral earth pressure envelope you would use in determining the strut loads.
. A triangular fill with dimensions as shown below is piled on the slope. The shear strength parameters of the plane between the fill material and the slope were determined as 12 kPa and 25°. Since the unit weight of the fill is 18.5 kN/m3, calculate the factor of safety against sliding.
For a railway track 7 m high embankment is required. The clay to be used for the embankment was found to have c = 20 kN/m2and unit weight = 19 kN/m3 Compute the critical maximum side slope angle for the embankment if a hard rocky stratum was found 3.5 m below the ground level. Assume ϕ for the clay equal to zero. The following values are given from Taylor's chart for depth factor D = 1.5 :
A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n = 0.013. (a) What is its yield in cubic meter per second? (b) What savings in earth excavation could be realized by using most economical proportion? (c) What savings in lining per meter length could be realized by using most economical proportion?