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GTE2601/101/0/2014
Tutorial letter 101/0/2014
Geotechnical Engineering II
GTE2601
Year Module
Department of Civil and Chemical Engineering
IMPORTANT INFORMATION:
This tutorial letter contains important informationabout your module.
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CONTENTS
Page
1 INTRODUCTION .......................................................................................................................... 3
2
PURPOSE OF AND OUTCOMES FOR THE MODULE............................................................... 3
2.1 Purpose ........................................................................................................................................ 3
2.2 Outcomes ..................................................................................................................................... 3
3 LECTURER(S) AND CONTACT DETAILS................................................................................... 4
3.1 Lecturer(s) .................................................................................................................................... 4
3.2 Department ................................................................................................................................... 4
3.3
University ...................................................................................................................................... 4
4 MODULE-RELATED RESOURCES ............................................................................................. 4
4.1 Prescribed books .......................................................................................................................... 4
4.2 Recommended books ................................................................................................................... 5
4.3 Electronic Reserves (e-Reserves) ................................................................................................. 5
5 STUDENT SUPPORT SERVICES FOR THE MODULE ............................................................... 5
6 MODULE-SPECIFIC STUDY PLAN ............................................................................................. 5
7
MODULE PRACTICAL WORK AND WORK-INTEGRATED LEARNING .................................... 5
8 ASSESSMENT ............................................................................................................................. 5
8.1 Assessment plan .......................................................................................................................... 5
8.2 General assignment numbers ....................................................................................................... 6
8.2.1 Unique assignment numbers ........................................................................................................ 6
8.2.2 Due dates for assignments ........................................................................................................... 6
8.3
Submission of assignments .......................................................................................................... 6
8.4
Assignments ................................................................................................................................. 8
9 OTHER ASSESSMENT METHODS ........................................................................................... 12
10 EXAMINATION ........................................................................................................................... 12
11 FREQUENTLY ASKED QUESTIONS ........................................................................................ 12
12 SOURCES CONSULTED ........................................................................................................... 12
13
CONCLUSION ............................................................................................................................ 12
14
ADDENDUM ............................................................................................................................... 12
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1 INTRODUCTION
Dear Student
Some of this tutorial matter may not be available when you register. Tutorial matter that is notavailable when you register will be posted to you as soon as possible, but is also available on
myUnisa.
2 PURPOSE OF AND OUTCOMES FOR THE MODULE
2.1 Purpose
The aim is to introduce students to a global view of the earth, its position in space relative to the
other planets in the solar system, its internal structure and crustal formation.
A knowledge of the more common and abundant minerals that make up the majority of rocks
forming the crust of the earth is fundamental the identification of rock types and understanding
of how these weather to form soils on which structures are founded.
2.2 Outcomes
The outcomes for this module are:
To direct the attention to, and appraise the learner of the basic origin, composition and
identification of igneous rocks.
To provide an understanding of how igneous rocks are formed their composition,
properties and characteristics.
To provide an understanding of structures that have resulted is important as they have a
significant influence on the design of structures on which they are situated.
To familiarise students with the third major group of rocks i.e. metamorphic rocks.
To have an understanding of how strata can be dated and the timescale of occurrence of
the various era, series, and systems in the South African Stratigraphic column.
To instruct students in the occurrence and location of the groups, formations and the
rocks types that occurs within the various errata in South Africa.
To enlighten students of the processes involved in the weathering of rocks to soils.
To instruct students in the methods employed in field investigations, the profiling of the
various soil horizons and the taking of samples for submission to a laboratory for testing.
To demonstrate some of the more commonly used soil classification systems.
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3 LECTURER(S) AND CONTACT DETAILS
3.1 Lecturer(s)
Your Lecturer is: Mr. K. MABUSELA
Tel no.: 016 950 9422
CEL no.: 073 590 0503
E-mail:[email protected]
Contact Times:Saturdays (8:00 to 15:00)
3.2 Department
Department of Civil and Chemical Engineering
Unisa (Florida Campus)
Private Bag x6
Florida
1710
Phone: 011 471 2048/3132
Use the general E-mail address:civil&[email protected]
3.3 University
www.http://unisa.ac.za
4 MODULE-RELATED RESOURCES
4.1 Prescribed books
South African Geology for Mining, Metallurgical and Civil Engineering.
By: Lurir, J
Lupin Publishing
ISBN: 0620277971
Standard Methods of Testing Road Construction Materials: TMH1
By: Comm State Road Authorities
Dept of Transport
ISBN: 0798836539
mailto:[email protected]:[email protected]:[email protected]:civil&[email protected]:civil&[email protected]://www.http/unisa.ac.zahttp://www.http/unisa.ac.zamailto:civil&[email protected]:[email protected] -
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4.2 Recommended books
There are no recommended books for this module
4.3 Electronic Reserves (e-Reserves)
All course materials are available on myUnisa https://my.unisa.ac.za under the module coursecode under Materials. Discussion forums are set up by your lecturer and available for
discussions with your peers https://my.unisa.ac.za some additional electronic resources are
available from the Library site (via www.unisa.ac.za).You may electronically post or upload your
assignments in line with the guidelines explained in the booklet:
5 STUDENT SUPPORT SERVICES FOR THE MODULE
Important information appears in your my Studies @ Unisa brochure.
6 MODULE-SPECIFIC STUDY PLAN
Use your my Studies @ Unisa brochure for general time management and planning skills.
7 MODULE PRACTICAL WORK AND WORK-INTEGRATED LEARNING
GTE2601 is the theory aspect of this module, the practical aspect is GTE2PRA.
8 ASSESSMENT
8.1 Assessment plan
The assessment of this course is based on both formative and summative assessment. The
final mark for this module is calculated as follows:
The examination mark contributes 80% towards the final mark
The year mark contributes 20 % towards the final mark
The year mark is calculated based on the two assignments:
o Assignment 1 is compulsory. By submitting assignment 1, you will automatically
be granted examination admission.
Assignment 1 will contribute 50% to your year mark.
Assignment 2 contributes 50% to your year mark.
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8.2 General assignment numbers
Assignments are numbered consecutively per module, starting from 01
8.2.1 Unique assignment numbers
Assignment 1 373200
Assignment 2 373298
8.2.2 Due dates for assig nments
Assignment 1 28 May 2014
Assignment 2 03 July 2014
8.3 Submission of assignments
Note: The cutoff dates given here are the official, last dates on which a given assignment may
be submitted. Students must adhere to these dates only. All other dates referring to cut-off
submission dates for assignments, as may be posted on myUnisa or elsewhere, refers to
administrative dates as managed by the Assignments Department and does NOT influence or
change the above dates.
Website
Please note that the department has a web site where additional information on the department
and the modules are available.
The address is: http://www.unisa.ac.za/Default.asp?Cmd=ViewContent&ContentID=19740
Tutorial Letters are available from the myUnisa website. (See my Studies @ Unisa)
Should you encounter any problems in submitting an assignment on myUnisa, you may contactthe help line at [email protected]
Plagiarism
An assignment is designed to be a product of your own study and your own thought. It is not
intended to be a piece of work which merely reproduces details, information or ideas from a
study guide, from books or articles, or from the Internet.
If you do this, you commit plagiarism. Plagiarism is the act of copying word for word with or
without acknowledgment from study sources (e.g. books, articles, the Internet). In other words,
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you must submit your own ideas in your own words, sometimes interspersing relevant short
quotations thatare properly referenced.
Yes, simply copying a few pages from the prescribed book is plagiarism. Pasting paragraphs
from
Wikipedia into your assignment is plagiarism. And it does not stop being plagiarism if you
mention the source.
Skilled scientific writers can use direct block quotations to make a specific point. They know
what they are doing. You still need to develop your own voice, your own style of arguing the
point. Do not plagiarise.
Note that you also commit plagiarism if you copy the assignment of another student. We do
encourage you to work together and form study groups, but you are expected to prepare and
submit your own assignments.
When we receive two or more identical assignments, we are not able to work out who copied
from whom. We will therefore penalize both students.
If you commit plagiarism you will be penalized and given no marks for your assignment.
This will have a serious effect on your chances to succeed in your studies because you
will have no semester mark.
Furthermore, you may be penalised or subjected to disciplinary proceedings by the University.
Plagiarism is also an offence in terms of the law.
A Signed Declaration
Every essay-type assignment we receive must include the following declaration along with your
name and the date:
I declare that this assignment is my own work and that all sources quoted have been
acknowledged by appropriate references.
We will subtract marks if this declaration is absent from your assignment, just as we willsubtract marks if your assignment does not have a Table of contents, List of references cited,and so on.
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8.4 Assignments
Please submit all two assignments, duly completed, to UNISA before the closing dates stated inthis section.
ASSIGNMENT 1
SECTION A - SOIL MECHANICS
QUESTION 1
a) The material which has to be used for CBR test has a mass of 21 kg and a moisture
content of 2%. How much water in terms of mass and volume should be added to this
material to increase the moisture content from 2% to 9 %? (6)
b) After increasing the moisture from 2% to 9%, the material is split into three equal
masses, each which has to be compacted into a 2190 ml mould. If the first mould is
compacted to a bulk density of 1850 kg/m3, calculate the following given that the Gs is
2.65
Dry density (2)
Void ratio (5)
Porosity (1)
Air voids (3)
Degree of saturation (1)
Saturated density (4)
Bulk density @ 80% degree of saturation (3)
QUESTION 2
You have to mix X grams of dry soil and Y grams of water and then compact it in a suitable
container to obtain a cylindrical sample of 150mm in diameter and 150mm high. The compacted
sample has to have a dry density of 1903kg/m3and a moisture content of 14.6%. GS of soil
grains is 2.75.
a) Calculate X and Y. (7)
b) Calculate wet density, void ratio, porosity, air voids percentage, degree of
saturation, and lastly the bulk density at 95% degree of saturation (16)
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SECTION B - SOIL TESTS
Use TMH 1 as reference document to answer this section.
1. The table below contains the information for sieve analysis of soil
A1(a)
Initial Sample Size = 800 g
Sieve Size in mm Mass retained in grames
53 0
37.5 21.6
26.5 49.5
19.0 102.6
13.2 89.1
4.75 95.6
2.00 60.4
0.425 31.2
A5
Mass washed through
0.075mm sieve
100
Mass after washing & drying 42
Atterberg Limits
LL 32
PL 18
a) Do necessary calculations to determine the percentage passing each sieve. (10)
b) Classify the material according to AASHTO and Unified classification systems.(25)
2. Complete the following table by stating the particle size ranges for gravel, sand ,silt or
clay in accordance with ASTM and AASHTO systems (6)
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ASTM/Unified
Classification
Methods
AASHTO
Soil
portion
Particle size (range
sometimes)
Particle size (range
sometimes)
Source/reference
book
Gravel 75mm to 4.75mm
(example)
Sand
Fines
3. Explain riffling and quartering of soil sample (4)
4. Discuss fully the procedure of method A 6 (15)
5. Identify differences and similarities between method A5 and A6 (10)
[100 Marks]
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GTE 2601 (THEORY) ASSIGNMENT 2-GEOLOGY PART
THE EARTH
1. Identify and describe the terms that relate to internal structure of the earth. (10)
2. Explain very briefly the following terms
o focus (2)
o epicentre (2)
MINERALS
3. Discuss the rock forming minerals (15)
4. In order to identify minerals, would you prefer streak or colour? Justify your answer. (5)
5. Mention the six crystallographic systems (6)
ROCK TYPES
6. Mention the four agents of erosion (2)
7. How would you distinguish material transported by wind from material transported by
gravity (land slide)? (2)
8. Define and make examples of the following :
Argillaceous rocks (3)
Arenaceous rocks (2)
Rudaceous rocks (3)
9. Explain the following terms
Foliation (1)
Gneissic banding (2)
Protolith (2)
10. Heat is an important urgent/cause of metamorphism. What are the possible sources of
this heat? (3)
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HISTORICAL GEOLOGY AND SOUTH AFRICAN STRATIGRAPHY
11. State the law of superposition and explain how this concept is used to establish relative
ages of rock strata. (5)
12. On what basis can the stratigraphic classification be done? (6)
13. In what respect is the SA stratigraphy different from that of Great Britain? (5)
ALL TOPICS
14. Reflect on the relevance of this subject in Civil Engineering (24)
[TOTAL MARKS 100]
9 OTHER ASSESSMENT METHODS
N/A
10 EXAMINATION
EXAMINATION INFORMATION FOR GEOTECHNICAL ENGINEERING II(THEORY) (GTE2601)
Type of examination Closed book
Examination Language English
Calculators allowed - Memories of programmablecalculators must be cleared in the presence in invigilatorprior to start of the examination
Yes
11 FREQUENTLY ASKED QUESTIONS
TheStudies @ Unisa brochure contains an A-Z guide of the most relevant study information.
12 SOURCES CONSULTED
N/A
13 CONCLUSION
N/A
14 ADDENDUMN/A