GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Code: 2130606
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-III (NEW) EXAMINATION — SUMMER 2019
Subject Name: Geotechnics & Applied Geology
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.1 | (a) | Discuss briefly the scope of Geotechnical engineering in relation to Civil Engineering. | 03 |
| (b) | Define moisture content in soil. Draw phase diagram for fully saturated soil, partially saturated soil and fully dry soil, with all notations | 04 | |
| (c) | What is an earthquake? What are the causes of earthquakes? Describe in brief. | 07 | |
| Q.2 | (a) | Enlist types of soil water. Explain any two in short. | 03 |
| (b) | Write short note on honey comb structure and flocculated structure with neat diagrams. | 04 | |
| (c) | Define liquid limit of clay. How to obtain liquid limit of clay in laboratory? | 07 | |
| OR | |||
| (c) | Write step by step procedure of sieve analysis test for obtaining particle size distribution curve of soil. | 07 | |
| Q.3 | (a) | What is flow net? What are the characteristics of flow net? | 03 |
| (b) | Explain different consistency limits and soil states with respect to volume and water content using neat sketch. | 04 | |
| (c) | Discuss the different factors affecting permeability of soil, in detail. | 07 | |
| OR | |||
| (a) | Define Darcy’s law. Explain its validity. | 03 | |
| (b) | Enlist the limitations of sedimentation analysis. | 04 | |
| (c) | A horizontal stratified deposit of 3 layers of soil consists of thickness & permeability as; Top layer (3 m thick) is 3 x 10-3 cm/s middle layer (2 m thick) is 6.5 x 10-4 cm/s and bottom layer (4 m thick) is 7 x 10-4 cm/s. Find the equivalent permeability in horizontal and vertical direction. | 07 | |
| Q.4 | (a) | Define and explain the process of chemical weathering. | 03 |
| (b) | Write short note on rock cycle. | 04 | |
| (c) | Describe geology. Explain applications of geology in Civil Engineering. | 07 | |
| OR | |||
| (a) | Explain the terms: evaporation and transpiration | 03 | |
| (b) | What do you understand by the term liquifaction? | 04 | |
| (c) | Explain plate boundaries. Briefly explain types of plate boundaries with neat sketches. | 07 | |
| Q.5 | (a) | Define aquifer, aquitard and aquiclude. | 03 |
| (b) | Distinguish between the following; (1) Normal faults and Reverse faults; (i1) Dip and Strike. | 04 | |
| (c) | What is remote sensing? Explain the application of remote sensing in engineering geology. | 07 | |
| Q.5 | (a) | What are the laws of stratigraphy? | 03 |
| (b) | Describe landslide. Which factors are responsible for landslides? | 04 | |
| (c) | What are faults? How they are classified? Illustrate with neat and suitable diagram. | 07 |
Date: 18/06/2019
Total Marks: 70
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