Geotechnical laboratory tests were conducted to determine the liquid limit of soils. The data set shown in Table 1 was obtained by using Casagrande's apparatus on Soil A (Plastic Limit = 32). The data set shown in Table 2 was obtained by using Cone penetrometer on a different Soil B (Plastic Limit = 28). Table 1. Data from LL cup testing Table 2. Data from Cone penetrometer (a) Draw the Flow curve for soil A and B. (b) Calculate the Flow Index for both soils. (c) Calculate the Liquid limit for both soils. (d) Calculate the Plasticity and the Liquidity Indices for both soils, if both soils were found to have the same current water content of 30%. (e) What can be said about the strengths of the soils in their current state?
Geotechnical laboratory tests were conducted to determine the liquid limit of soils. The data set shown in Table 1 was obtained by using Casagrande's apparatus on Soil A (Plastic Limit = 32). The data set shown in Table 2 was obtained by using Cone penetrometer on a different Soil B (Plastic Limit = 28). Table 1. Data from LL cup testing Table 2. Data from Cone penetrometer (a) Draw the Flow curve for soil A and B. (b) Calculate the Flow Index for both soils. (c) Calculate the Liquid limit for both soils. (d) Calculate the Plasticity and the Liquidity Indices for both soils, if both soils were found to have the same current water content of 30%. (e) What can be said about the strengths of the soils in their current state?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Geotechnical laboratory tests were conducted to determine the liquid limit of soils. The data set shown in Table
1 was obtained by using Casagrande's apparatus on Soil A (Plastic Limit = 32). The data set shown in Table 2
was obtained by using Cone penetrometer on a different Soil B (Plastic Limit = 28).
Table 1. Data from LL cup testing Table 2. Data from Cone penetrometer
(a) Draw the Flow curve for soil A and B.
(b) Calculate the Flow Index for both soils.
(c) Calculate the Liquid limit for both soils.
(d) Calculate the Plasticity and the Liquidity Indices for both soils, if both soils were found to have
the same current water content of 30%.
(e) What can be said about the strengths of the soils in their current state?
1 was obtained by using Casagrande's apparatus on Soil A (Plastic Limit = 32). The data set shown in Table 2
was obtained by using Cone penetrometer on a different Soil B (Plastic Limit = 28).
Table 1. Data from LL cup testing Table 2. Data from Cone penetrometer
(a) Draw the Flow curve for soil A and B.
(b) Calculate the Flow Index for both soils.
(c) Calculate the Liquid limit for both soils.
(d) Calculate the Plasticity and the Liquidity Indices for both soils, if both soils were found to have
the same current water content of 30%.
(e) What can be said about the strengths of the soils in their current state?
Transcribed Image Text:Problem 2
Geotechnical laboratory tests were conducted to determine the liquid limit of soils. The data set shown in Table
1 was obtained by using Casagrande's apparatus on Soil A (Plastic Limit = 32). The data set shown in Table 2
was obtained by using Cone penetrometer on a different Soil B (Plastic Limit = 28).
Table 1. Data from LL cup testing
Table 2. Data from Cone penetrometer
Liquid Limit Test Data
Water
content, %
46
42
38
30
28
Specimen
1
2
3
4
5
No. of
blows
16
20
24
32
34
Liquid Limit Test Data
Water
content, %
37
39
44
46
50
Specimen
1
2
3
4
5
Penetration,
mm
16
27
36
54
70
(a) Draw the Flow curve for soil A and B.
(b) Calculate the Flow Index for both soils.
(c) Calculate the Liquid limit for both soils.
(d) Calculate the Plasticity and the Liquidity Indices for both soils, if both soils were found to have
the same current water content of 30%.
(e) What can be said about the strengths of the soils in their current state?
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Step 1: Given data:
VIEWStep 2: Flow curve for soil A:
VIEWStep 3: Flow curve for soil-B:
VIEWStep 4: 3. Calculate the Liquid limit for both soils.
VIEWStep 5: 2. Calculate the Flow Index for both soils:
VIEWStep 6: 4. The Plasticity and the Liquidity Indices for both soils
VIEWStep 7: 5. What can be said about the strengths of the soils in their current state?
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