Quiz
Chapter 14 - Geo II
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Questions in this quiz (17)
1In Coulomb's earth pressure theory, the retaining wall is considered to be rough.
- ATrue
- BFalse
2In reality, most failure surfaces are in fact a straight plane.
- ATrue
- BFalse
3Shear forces in retaining walls develop between the face of the wall and the backfill.
- ATrue
- BFalse
4Consider a retaining wall with friction. In the active case, the soil mass in the active zone is stretched [blank_start]outward[blank_end]. This causes a [blank_start]downward[blank_end] motion of soil relative to the wall and a [blank_start]downward[blank_end] shear.
- Ainward
- Boutward
- Cdownward
- Dupward
- Edownward
- Fupward
- Goutward
- Hinward
- Iupward
- Jinward
- Kdownward
- Loutward
5Correctly label each diagram.
- APositive Wall Friction in Active Case
- BNegative Wall Friction in Active Case
- CPositive Wall Friction in Passive Case
- DNegative Wall Friction in Passive Case
- EPositive Wall Friction, Active Case
- FNegative Wall Friction, Active Case
- GPositive Wall Friction, Passive Case
- HNegative Wall Friction, Passive Case
6Correctly label each diagram
- AActive Case, Positive Wall Friction
- BActive Case, Negative Wall Friction
- CPassive Case, Positive Wall Friction
- DPassive Case, Negative Wall Friction
- EActive Case, Positive Wall Friction
- FPassive Case, Positive Wall Friction
- GActive Case, Negative Wall Friction
- HPassive Case, Negative Wall Friction
7The direction of the active force or passive force can change depending on whether there is positive wall friction or negative wall friction.
- ATrue
- BFalse
8Assuming the failure surface is a plane in Coulomb's Theory grossly underestimates the passive resistance of walls.
- ATrue
- BFalse
9In practical considerations, the angle of wall friction (delta') is taken to be equal to the angle of friction of soil (phi') for [blank_start]loose[blank_end] granular backfill, but is smaller than phi' for [blank_start]dense[blank_end] granular backfill.
- Aloose
- Bdense
- Cloose
- Ddense
10Assuming the failure surface is planar gives reasonably good results when calculating active pressure.
- ATrue
- BFalse
11Shields and Tolunay used what method to consider the stability of the trial soil wedge?
- Amethod of rectangles
- Bmethod of triangular slices
- Cmethod of slices
- Dmethod of wedges
12Zhu and Qian used what method to obtain the variations of Kp?
- Amethod of triangular slices
- Bmethod of slices
- Cmethod of reectangles
- Dmethod of wedges
13In braced cuts, strut loads are determined by assuming all vertical members except the top and bottom are _______.
- Apinned
- Bhinged
- Cfixed
14Retaining walls fail as single units while bracing in an open cut undergo progressive failure where one or more struts can fail at a time.
- ATrue
- BFalse
15In braced cuts, there is a pressure diagram for which soil conditions?
- Asand
- Bsoft to medium clay
- Cstiff clay
- DAll of the above
16Another difference between retaining walls and braced cuts, is that braced cuts rotate about the bottom while retaining walls rotate about the top.
- ATrue
- BFalse
17Neither Coulomb's or Rankine's theory gives the actual earth pressure distribution for braced cuts.
- ATrue
- BFalse
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- Description
- Engineering Quiz on Chapter 14 - Geo II, created by Kiki Medina on 18/11/2018.
- Author
- Kiki Medina
- Language
- English
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- 3
- History
- Created on 18 Nov 2018 · updated on 18 Nov 2018
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