2 me = 0.53Gs = 2.65 A4 mDry Sande = 0.476 mSaturated SandGs = 2.67a. Determine the effective stress atpoint A in kPa.b. Determine the effective stress atpoint B in kPa.b. Determine the effective stress atpoint C in kPa.c. Determine how high (m) from pointB will the water table rise up so thatthe effective stress at C is 125 kpa.

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Answered: 2 m e = 0.53 Gs = 2.65 A* 4 m Dry Sand…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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A soil profile consists of sand (4-m thick) which overlies a layer of clay (8-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 = 0.87, Specific gravity = 2.7, Degree of Saturation = 0.7 For clay layer: Void Ratio = 0.81, Specific gravity = 2.79 Round off to two decimal places.
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Problem 3. The strain rosette shown has angles 0, = 0° (aligned with the x-axis), 0, = 60°, and 0, = 120°, We attach it to a body and then load the body. The strain m m rosette reports the following values: E = 500µ, E, =1200µ, and ɛ. 100µ- m Recall for a delta rosette: Ex = Ea %3D 1 Ey 3 =(26, +26, - 8.) %3D 2 Yy = J a Sketch Mohr's Circle for Strain. Indicate the following Y Max 20,, &,, E2, and- InPlane on your sketch the followinge 2 Determine the following: E2. Op. YMax InPlane
The sub-surface profile at a certain site is shown in Figure. Given that YSM =112pcf, YML =109pcf, /ML,sat =113pcf, lateral earth pressure coefficient at rest K₁ =0.54. Compute U, Ox, Oz, Ox', andoz at Point A. Solution: Total vertical stress at A: O₂ = • Pore water pressure at A: u = • Effective vertical stress at A: 0₂ ● Effective horizontal stress at A: Ox' Total horizontal stress at A: Ox II psf; psf; psf; psf; psf; Silty Sand: (SM). Clayey Silt (ML) ▼ 12 ft 10 ft 11 ft
Q-3: A consolidated-drained tri-axial test was conducted on a normally consolidated clay. The results are as follows: 03 = 276 kN/m² (Aod)f=276 kN/m² Determine a. Angle of friction, o' b. Angle that the failure plane makes with the major principal plane c. Find the normal stress o' and the shear stress ty on the failure plane d. Determine the effective normal stress on the plane of maximum shear stress Shear stress Š σí σí σ3 Effective stress failure envelope B σ3 = 276 kN/m² A Normal stress 20 σ = 552 kN/m² Ⓒ Cengage Learning 2014
Answer in three decimal places please
1. The following figure shows the stress-displacement results of four direct shear tests under different vertical stresses. 70 60 o'v=10 psi 50 - o'v=20 psi 40 Δσ'ν-40 psi o'v=80 psi 30 20 10 0.05 0.1 0.15 0.2 0.25 0.3 shear displ. [in] Based on the results above, develop the Mohr-Coulomb failure envelope. Indicate the cohesion (c') and calculate the drained friction angle (o'). shear stress [psi]
From the given Figure, determine the following: a. Effective stress at the bottom of the clay b. if the water table rises to the level of the soil surface, what is the effective stress at the bottom of the clay. c. if the water is 3m above the soil surface, what is the effective stress at the bottom of the clay. 4m 5m 156 kN/m² 16.6 kN/m² Water table Y = 17,8 kN/m
A soil element is shown in the figure. Determine the following: 300 psf 1. a. Maximum and minimum principal stresses b. Normal and shear stresses on plane AB 250 psf 80 psf A + 35⁰ + B 80 psf
2
Given: H₁ = 1.10 m, H₂ = 2.20 m, h = 1.30 m, void ratio of sand e = 0.62, specific gravity of soil solids Gs = 2.72, area of the tank = 0.5 m², and hydraulic conductivity of sand = 0.1 cm/sec. a. What is the effective stress at C if z = 1.23 m? b. What should be the value of h to cause boiling? Outflow Inflow H₂ Valve (open)
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 d) Total stress (kPa) at point A, B and C. e) Porewater pressure (kPa) at point A, B and C.

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2 m e = 0.53 Gs = 2.65 A* 4 m Dry Sand B В e = 0.47 Saturated Sand Gs = 2.67 6 m a. Determine the effective stress at point A in kPa. b. Determine the effective stress at point B in kPa. b. Determine the effective stress at point C in kPa.