Who Wants to be a Geotechnical Engineer?

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Who Wants to be a Geotechnical Engineer?
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Rules
1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
There are three guaranteed levels at 1,000,
100,000 and 1,000,000.
A wrong answer at any other level will take you
down to the previously guaranteed level.
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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
One of the following can exceed 100.

1. Porosity
2. Water content
3. Relative density
4. Degree of saturation

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
One cubic metre of dry sands may weigh about

1. 1500 kg
2. 1.5 tonne
3. 16 kN
4. any of the above

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
D10 is the greatest in

1. sands
2. gravels
3. silts
4. clays

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Silts are

1. cohesive
2. coarse grained soils
3. plastic
4. none of the above

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
At liquidity index of zero, the clay is

1. dry
2. at liquid limit
3. at plastic limit
4. none of the above

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following terms is not used with
sands?

1. D10
2. relative density
3. well graded
4. activity

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following symbols is not possible in
AS1726?

1. GM
2. SP
3. CM
4. MH

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following symbols is not possible in
AS1726?

1. GW-GC
2. SP-SM
3. SW-SM
4. SP-GP

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
In grain size distribution, what does D30 mean?

1. D30 is the finer than 30 mm
2. D30 is the coarser than 30 mm
3. 30 grains are smaller than D30 mm
4. 30 grains are larger than D30 mm

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following is not true about Plastic
limit?

1. always less than liquid limit
2. generally greater for clays than for silts
3. always less than plasticity index
4. always greater than shrinkage limit

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Congratulations!
You have reached the guaranteed 1,000. Proceed
to the next level.
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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Liquid limit and Plastic limit tests are carried
on soil fraction passing

1. 0.425 mm sieve
2. 4.75 mm sieve
3. 0.300 mm sieve
4. 0.075 mm sieve

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following is not true about fine
grained soils?

1. Grains are smaller than 0.075 mm
2. Grains cannot be seen by naked eye
3. All fine grained soils are plastic
4. None of the above

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following is not true about clays?

1. Clays are plastic
2. Grains are flaky or needle-like
3. Grains are electrically charged
4. None of the above

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Granular soils are classified loose or dense
based on

1. porosity
2. relative density
3. relative compaction
4. dry density

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following is the least dominant atom
in clay minerals?

1. aluminium
2. oxygen
3. silicon
4. magnesium

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following clay mineral has the
largest cation exchange capacity?

1. kaolinite
2. illite
3. chlorite
4. montmorillonite

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which of the following is not true for clays and
silts?

1. Both are fine grained soils
2. Both are predominantly silica
3. Both carry negative charge
4. Clays have greater specific surface

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Granular soils are generally compacted by

1. kneading
2. static loads
3. vibratory loads
4. all of the the above

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Clays are generally compacted by

1. vibratory rollers
2. sheepsfoot rollers
3. dynamic compaction
4. all of the the above

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Dynamic compaction is not very effective on

1. Mangrove clays
2. Granular soils
3. Land fills
4. Karst terrain with sinkhole cavities

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Congratulations!
You have reached the guaranteed 100,000. Proceed
to the next level.
26
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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Compaction tests on fines grained soils are
carried on soil fraction passing

1. 0.425 mm sieve
2. 4.75 mm sieve
3. 0.300 mm sieve
4. 0.075 mm sieve

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
At optimum water content, which of the following
is not true?

1. dry density is the maximum
2. permeability is the minimum
3. porosity is the minimum
4. strength is the maximum

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Compacting a clay wet of optimum results in

1. more flocculated clay fabric
2. more strength
3. higher shrinkage
4. higher permeability

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Capillary rise is the largest in

1. silts
2. sands
3. gravels
4. clays

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1,000,000800,000600,000400,000200,00010
0,00075,00050,00030,00020,00015,00010,
0005,0003,0002,0001,00090080070060
0500400300200100
Which one of the following is not a clay mineral?

1. Attapulgite
2. Vermiculite
3. Vegemite
4. Halloysite

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