TEST 1
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School
Louisiana State University *
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Course
3503
Subject
Geology
Date
Dec 6, 2023
Type
docx
Pages
5
Uploaded by CaptainIbisPerson539
A sedimentary rock is formed by:
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Weathered deposits compacted and cemented together
Metamorphic rocks may be produced by:
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Changing parent rocks by heat and pressure
The clay soil that has a capillary suction greater than 100 meters is called:
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Montmorillonite
Which of the following is true if the liquidation index is greater than 1?
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In-situ moisture content is greater than the liquid limit
The following assumptions is NOT made for the application of Stroke’s Law for the hydrometer analysis:
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There is no influence from other particles
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There are no side effects from the container
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Clay mineral particles are flat and platy-like
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Flow is laminar
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An avergae G’s is used to represent all soil particles
Calculate the moisture content given the following information:
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Weight of the moist soil + container = 63.50 g
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Weight of oven dry soil + container = 54.35 g
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Weight of container = 6.89 g
o
19.28
o
The uniformity coefficient (Cu) for Soil 2 is most nearly:
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23
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15
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31
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Cannot be determined because of the shape of the curve
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6
The percentage of silt and clay sizes (percentage of fines) in Soil 4 is most near:
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62%
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50%
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12%
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40%
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38%
The percentage of coarse-grained (gravel and sand) material in soil 1 is most near:
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87%
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18%
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62%
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72%
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43%
Which of the soil is gap-graded?
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Soil 4
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Soil 1
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Soil 2
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Soil 3
Which of the soils is the most well-graded?
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Soil 2
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Soil 4
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Soil 3
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Soil 1
The demarcation between gravel-sized and sand-sized particles is N0. 4 Sieve.
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True
The demarcation between the sand-sized and silt-sized particles is N0.200 Sieve
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True
Which soil contains the largest percentage of silt and clay sizes?
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Soil 2
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Soil 4
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Soil 1
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Soil 3
The Atterberg limits for soils are used for the following purposes:
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All the choice are correct: soil classification, correlations of soil properties, translating experience
The liquid limit of a soil corresponds to what number of drops in the LL device:
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25
The liquid limit water content which divides a high plasticity clay (CH) from a low plasticity clay in the
Unified Soil Classification System (USCS) is:
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50
Classify soil 3, which as a liquid limit of 51 and a plastic limit of 22:
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Classify soil 1, which has a liquid limit of 45 and a plasticity index of 3:
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GM
A fine-grained soil has a liquid limit of 45 and a plastic limit of 20. The USCS classification is:
A sandy soil has a total unit weigh of 123.3 pcf at a moisture content of 17.42 percent. The specific
gravity of the soil solid's is 2.65. With reference to the phase diagram above, the degree of saturation for
the soil is most closely represented by:
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80%
Which of the following is not true of for projects that contains cut and fill:
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Weight of solids of the cut is not equal to the weight of solids of the fill
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Volume of the cut is not equal to the volume of fill
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Dry unit weight of the cut is not equal to the dry unit weight of the fill
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Weight of solids of the cut is equal to the weight of the solids of the fill
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Moisture content of the cut is not equal to the moisture content of the fill
A sample of sand has a mass of 3850.0 grams in its natural state and 3395.0 grams after oven drying. This
sample has a volume of 1985.0 cm^3. Calculate the natural moisture content. Unit weight of water = 1g/
cm^3
A sample of sand has a mass of 3850.0 grams in its natural state and 3395.0 grams after oven drying.
This sample has a volume of 1985.0 cm^3. Calculate the specific gravity. Unit weight of water = 1g/ cm^3
A borrow pit has the following properties: moist unit weight of 115 lb/ft^3, moisture content of 10%, and
is a fine-grained clay soil with a 35% swell factor. The fill properties need to be the following after
constructions: moist unit weight of 125 lb/ft^3, moisture content of 15%, and the volume of fill is equal
to 10,000 yd^3. Given the above information, the amount of water needed in pounds is most near to:
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54,350 lb
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543, 500 lb
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0 lb
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1.47 x 106 lb
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1.47 x 108 lb
A borrow pit has the following properties: moist unit weight of 115 lb/ft^3, moisture content of 10%, and
is a fine-grained clay soil with a 35% swell factor. The fill properties need to be the following after
constructions: moist unit weight of 125 lb/ft^3, moisture content of 15%, and the volume of fill is equal
to 10,000 yd^3. Given the above information and given a fleet of 10 trucks that can be each haul 20 yd3
per trip and the volume of borrow needed is equal to 10,600 yd^3, how many round trips are needed for
the fleet to move the soil?
-
96
-
80
-
90
-
72
-
85
A borrow pit has the following properties: moist unit weight of 115 lb/ft^3, moisture content of 10%, and
is a fine-grained clay soil with a 35% swell factor. The fill properties need to be the following after
constructions: moist unit weight of 125 lb/ft^3, moisture content of 15%, and the volume of fill is equal
to 10,000 yd^3. Given the above information, the volume of borrow material needed is most near to:
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10,900 yd3
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10,100 yd3
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11,000 yd3
-
10,400 yd3
-
10,000 yd3