 MORE IN Geotechnics & Applied Geology
GTU Civil Engineering (Semester 3)
Geotechnics & Applied Geology
December 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) What is the scope of geotechnical engineering in the field of civil engineering?
7 M
1 (b) What is weathering? Enumerate the type of weathering. Distinguish between physical and chemical weathering.
7 M

2 (a) A soil sample has a porosity of 40 percent. The specific gravity of solids is 2.70. Calculate (a) void ratio, (b) dry density, (c) unit weight if the soil is 50% saturated and (d) unit weight if the soil is completely saturated.
7 M
Answer any one question from Q2 (b) & Q2 (c)
2 (b) What is an earthquake? What are the causes of earthquakes? Describe in brief the types of earthquake waves.
7 M
2 (c) How is geology related to civil engineering? Discuss the scope of application of geological knowledge in the planning and execution of engineering works.
7 M

Answer any two question from Q3 (a), (b) & Q3 (c), (d)
3 (a) Define the following terms: (i) water content (ii) void ratio (iii) porosity (iv) Unit weight of solids (v) Air content (vi) Bulk Unit weight (vii)Specific gravity
7 M
3 (b) Discus in brief the importance of study of geology for a civil engineer.
7 M
3 (c) A soil sample has a liquid limit of 30%, plastic limit 17% and flow index of 13%.Natural water content of soil is 19%. Determine: (i) plasticity index (ii) liquidity index (iii) consistency index (iv) Toughness index
7 M
3 (d) Define laws of stratigraphy.
7 M

Answer any two question from Q4 (a), (b) & Q4 (c), (b)
4 (a) Enlist the various methods of water content determine and explain oven drying method.
7 M
4 (b) Define the terms: (i) permeability (ii) seepage (iii) coefficient of Permeability (iv) Darcy's law (v) flow net (vi) Discharge velocity (vii) Hydraulic gradient (i)
7 M
4 (c) Define a mineral describe in brief the various physical properties of minerals which help in their identification.
7 M
4 (d) Explain grain size distribution by sieve analysis.
7 M

5 (a) What are faults? How they are classified? Illustrate with neat and suitable diagram.
7 M
Answer any two question from Q5(a), (b) & Q5 (c), (d)
5 (b) What is texture of the soil?
7 M
5 (c) What are the purposes of the soil classification?
7 M
5 (d) Write short notes on the following: (i) water table and perched water table (ii) confined aquifer and unconfined aquifer
7 M

More question papers from Geotechnics & Applied Geology