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Engineering Geology ( GHT 413 ) – 2013


Department of Geology
University of Dhaka
Fourth -Year B.S. Honor’s Course -Final Examination 2013
Subject: Geology
Course: GHT 413 Course Name: Engineering Geology
Subjective Part
Time 2 Hours Full marks 25

The figure at the right margin indicates full marks. Answer any jive of the following questions. Illustrate your answers with suitable sketches aid/or diagrams wherever necessary.

Question No. 1.
a) Illustrate the phase diagrams of soil in terms of weight or mass and volume. 1.5
b) Define Water Content, Void Ratio, Porosity, Degree of Saturation, Unit Weight (wet and dry) of soil using necessary equations. 2.0
c) What are the Atterberg limits? Define Plastic Limit, Liquid Limit, and Plasticity Index. 1.5

Question No. 2.
a) Describe the Tunnel structure in hard ground and soft ground. 1.0
b) What are the function and significance of sub -grade properties of Highway? 1.5
c) Explain what are the Properties Associated with Sub -grade Soil? 1.0
d) Brief the Classification & Identification of soil as sub -grade material 1.5

Question No: 3.
a) What do you mean by foundation? What are the types of foundations? 1.5
b) Write down Terzaghi’s Bearing Capacity Formulas. 1.5
c ) Explain the ground water table effects on the calculation of bearing capacity 2.0

Question No. 4.
a) Differentiate between Dam and Barrage. 1.5
b) What are the geological considerations are taken into account in selecting the site of a dam. 1.5
c) Write down a comparison between earth and masonry dams 2.0

Question No. 5.
a) Explain what include in Soil investigation? 2.0
O What is bearing capacity of rock and sand soil? 1.5
c) Explain the SFT Correction Factors? 1.5

Question No. 6.
Write short notes on any FOUR of the followings: 1.25 x4 5.0
a) Unified Soil Classification System
b) Procedure of SPI
c) Discontinuity of rockmass
d) “Simple Means” Test for intact rock strength determination
e) RQD

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