Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 5th Sem Old 150604 Geotechnical Engineering I Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (Old) EXAMINATION ? WINTER 2019
Subject Code: 150604 Date: 02/12/2019
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
Q.1 (a) Define Compaction? Enumerate various factors affecting compaction of soil. 07
(b) Explain with neat sketch the geological cycle? Give names of different types of
soils formed in nature.
07
Q.2 (a) Explain the procedure for standard proctor test for determination of Maximum Dry
Density and Optimum Moisture content of soil?
07
(b) A standard proctor test was conducted on a soil with following observations. If the
volume of the mould is 950cubic centimeter, and the specific gravity of soil solids
is 2.65, draw compaction curve, 80% as well as 100% saturation lines.
Water Content (%) 7.7 11.5 14.6 17.5 19.5 21.2
Mass of Wet Soil (kg) 1.7 1.89 2.03 1.99 1.96 1.92
07
OR
(b) Define Atterberg?s Limits. Explain procedure for determination of Plastic Limit of
soil?
07
Q.3 (a) Define (i) Coefficient of Volume Compressibility (ii) Coefficient of Volume
Change (iii) Coefficient of Uniformity (iv) Coefficient of Curvature.
07
(b) Explain with help of a neat sketch method of determination of coefficient of
consolidation?
07
OR
Q.3 (a) Define Consolidation? Enumerate assumptions for Terzaghi?s One Dimensional
theory?
07
(b) Define (i) Void Ratio (ii) Saturated Density (iii) Submerged Unit Weight (iv)
Degree of Saturation
07
Q.4 (a) Explain Triaxial test with respect to drainage conditions? Enumerate conditions
for their respective use?
07
(b) Explain method of determination of Coefficient of Permeability for sands? 07
OR
Q.4 (a) Explain with usual notations the Mohr Coulomb Strength theory with help of
appropriate sketches?
07
(b) Explain with help of neat figures different structures of soil as encountered in field
conditions?
07
Q.5 (a) Describe the IS classification method for soils with appropriate notations? 07
(b) Explain the method for determination of Relative density of cohesionless soils? 07
OR
Q.5 (a) Define the following (i) Free water and held water (ii) Structural water and
absorbed water (iii) Capillary water
07
(b) Explain Darcy?s law and give conditions for its validity? 07
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This post was last modified on 20 February 2020