Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem New 2154003 Geotechnical Engineering I Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? V (New) EXAMINATION ? WINTER 2019
Subject Code: 2154003 Date: 25/11/2019
Subject Name: Geotechnical Engineering - I
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Semi-log papers & Arithmetic graph papers can be requested from the invigilator.
MARKS
Q.1 (a) Discuss three phases system of soil. Explain with neat sketch. 03
(b)
Derive : ?? =
?? 1 ? ??
04
(c) Summarize the Scope and limitation of geo-technical engineering in civil
engineering.
07
Q.2 (a) Define: Water Content, Bulk Density, Dry Density 03
(b) For a soil sample, particle size distribution curve was obtained and value
of D10 = 0.145, D30 =0.47, D60 =1.5. Classify the soil.
04
(c) For following results, plot particle size distribution curve and classify the
soil.
Total weight of soil sample = 500 g
Sieve Size
4.75
mm
2.36
mm
1.18
mm
600
?
300
?
150
?
75 ?
Soil Passing (%) 95 87 68 49 29 12 4
07
OR
(c) Describe any test to obtain specific gravity of soil with sketch. 07
Q.3 (a) Define: Liquid limit, Plastic Limit & Shrinkage Limit 03
(b) Discuss the uses of Consistency limits. 04
(c) Explain liquid limit test for soil by Casagrande method. 07
OR
Q.3 (a) Draw a neat sketch for the consistency limits as proposed by Atterberg. 03
(b) Define: Toughness Index, Plasticity Index, Shrinkage Index, Liquidity
Index, Sensitivity (Any 4)
04
(c) Illustrate liquid limit test for soil by Cone penetrometer method. 07
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Page 1 of 2
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? V (New) EXAMINATION ? WINTER 2019
Subject Code: 2154003 Date: 25/11/2019
Subject Name: Geotechnical Engineering - I
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Semi-log papers & Arithmetic graph papers can be requested from the invigilator.
MARKS
Q.1 (a) Discuss three phases system of soil. Explain with neat sketch. 03
(b)
Derive : ?? =
?? 1 ? ??
04
(c) Summarize the Scope and limitation of geo-technical engineering in civil
engineering.
07
Q.2 (a) Define: Water Content, Bulk Density, Dry Density 03
(b) For a soil sample, particle size distribution curve was obtained and value
of D10 = 0.145, D30 =0.47, D60 =1.5. Classify the soil.
04
(c) For following results, plot particle size distribution curve and classify the
soil.
Total weight of soil sample = 500 g
Sieve Size
4.75
mm
2.36
mm
1.18
mm
600
?
300
?
150
?
75 ?
Soil Passing (%) 95 87 68 49 29 12 4
07
OR
(c) Describe any test to obtain specific gravity of soil with sketch. 07
Q.3 (a) Define: Liquid limit, Plastic Limit & Shrinkage Limit 03
(b) Discuss the uses of Consistency limits. 04
(c) Explain liquid limit test for soil by Casagrande method. 07
OR
Q.3 (a) Draw a neat sketch for the consistency limits as proposed by Atterberg. 03
(b) Define: Toughness Index, Plasticity Index, Shrinkage Index, Liquidity
Index, Sensitivity (Any 4)
04
(c) Illustrate liquid limit test for soil by Cone penetrometer method. 07
Page 2 of 2
Q.4 (a) What is Permeability of soil? Discuss importance of permeability in soil. 03
(b) In a falling head permeability test on a sample 18 cm high and 44 cm
2
in
cross sectional area, the water level in a standpipe of 6.25 mm internal
diameter dropped from a height of 70 cm to 28 cm in 10 minutes.
Determine the coefficient of permeability.
04
(c) Explain the most suitable test to determine Permeability of Sandy soil in
laboratory.
07
OR
Q.4 (a) What are the applications of Flow net? 03
(b) State Darcy?s law. What are the assumptions made in Darcy?s law? 04
(c) Discuss the different factors affecting permeability of soil. 07
Q.5 (a) Enlist the various factors affecting compaction. 03
(b) What are the differences between compaction and consolidation? 04
(c) Explain Mohr strength theory and Mohr-coulomb?s strength theory. 07
OR
Q.5 (a) What is Consolidation? 03
(b) Compare Light compaction and Heavy compaction Test of soil. 04
(c) Explain Standard Proctor Test as per IS 2720 (Part 7), 1980. 07
************
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This post was last modified on 20 February 2020