Geotechnical Engineering Mock Test 7

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Question 1 of 10

1. If a footing has a dimension of 1m*1m and load transfer of 20 kN, then the contact pressure is _______________

50 kN/m²

30 kN/m²

20 kN/m²

70 kN/m²

Question 1 of 10

Question 2 of 10

2. In simple radial distribution, the three stress components σ_r, σ_θ and τ_rθ are given by ___________

\(σ_r=\frac{Q cos⁡θ}{r}, σ_θ=0 \,and\, τ_{rθ}=0\)

\(σ_r=K \frac{Q cos⁡θ}{r}, σ_θ=0 \,and\, τ_{rθ}=0 \)

σ_r=KQ, σ_θ=0 and τ_rθ=0

σ_r=0, σ_θ=0 and τ_rθ= 0

Question 2 of 10

Question 3 of 10

3. If r/z ratio is 0.5 and load of 20 kN is acting at a point, then the vertical pressure at a depth 6m is ____________

0.597 kN/m²

0.4356 kN/m²

0.244 kN/m²

0.1518 kN/m²

Question 3 of 10

Question 4 of 10

4. When the ratio of r/z equals to 0.5, the Boussinesq influence factor is ________ of the maximum.

17.7%

1.8%

57%

23%

Question 4 of 10

Question 5 of 10

5. The assumption of Boussinesq equation is that the soil is ______________

semi-infinite

finite

semi- finite

infinite

Question 5 of 10

Question 6 of 10

6. The Boussinesq equation representing the polar radial stress is ___________

\(σ_R=\frac{3Q}{2π} \frac{cos⁡β}{R^2}\)

\(σ_R=\frac{3Q}{2π} \frac{cos⁡β}{R^3} \)

\(σ_R=\frac{3Q}{2} \frac{cos⁡β}{R^2} \)

\(σ_R=\frac{3Q}{2π} \frac{cos⁡β}{R}\)

Question 6 of 10

Question 7 of 10

7. If θ is the apex angle which the line joining the apex makes with the outer edge of the loading of a circular area, then the Boussinesq’s vertical pressure σ_z under a uniformly loaded circular area is given by ______________

σ_z=q[1-sin³θ]

σ_z=q[1-tan³θ]

σ_z=q[1-cos³θ]

σ_z=q[1-cos²θ]

Question 7 of 10

Question 8 of 10

8. In Terzaghi’s Theory of one dimensional consolidation, the change in thickness of a layer during consolidation is ___________

insignificant

significant

very large

large

Question 8 of 10

Question 9 of 10

9. If the contact pressure is 14 kN/m², then find the load for 50 m².

600kN

700kN

500kN

800kN

Question 9 of 10

Question 10 of 10

10. Find the load at depth 10m for a uniformly loaded circular area of radius 1000m. k=1. The vertical pressure σ_z is 80 kN/m².

51kN/m²

12kN/m²

80 kN/m²

54 kN/m²

Question 10 of 10