caniqs/civil/highway/materials
PictureOfSpecimen.jpg
SampleReport-CBR.docx
BSc (hons)
CIVIL ENGINEERING
SOILS AND HIGHWAYS LABORATORY
The California Bearing Ratio test
(CBR).
Group: C
Killian Ngong
Submitted by: Rui Dário António d’Orey
Student ID: 77149818
Course: Civil Engineering Level 5
Date: 09/10/2015
Table of Contents
|
Abstract |
Page 3 |
|
Introduction |
Page 4 |
|
Experimental procedure |
Pages 5 and 6 |
|
Results and calculation |
Pages 7-11 |
|
Discussion |
Page 12 |
|
Conclusion |
Page 13 |
|
Bibliography |
Page 14 |
|
Appendix |
Page 18 |
Abstract:
The laboratory activities released on the ninth of October for the Highway Engineering module aimed to determine The California bearing Ratio (CBR). Moreover, the California Bearing Ratio (CBR) [BS 1377: Part 4: 1990] test has taken from a soil at optimum moisture content. In addition, California Bearing ratio (CBR) is a test aimed to measure indirectly the subgrades’ shear strength helping to estimate the performance of sub-bases and subgrades in highway design. However, the results presented from the sample tested on this practical, shows the students that, this sample has acceptable CBR result numbers. Besides that, according to the results of this test it is possible to affirm that those values of The California Bearing Ratio (CBR) of a soil sample are suitable to be used on a road subgrade and on pavement foundations. In addition, the results taken on this practical were only taken from the top of the sample. To conclude, on the California Bearing Ratio test the results were: 20.26% for 2.5mm of penetration and 20.89% for 5.0mm of penetration.
Introduction:
In the construction of roads, building, tanks and drainage systems, civil engineers have to deal with foundations before they really start building what the contractor has requested. So it is extremely important to the engineers to study the strength of the material found on land where the foundation normally was done, in order, to know the capacity of the land. Besides that, it is also critical to know how the sub-grade of the foundations are made-off because the sub-grade it always the first layer of the foundations. Therefore, it is necessary to assess always the land in question, so one of the most used test do it, is the California Bearing ratio. The California Bearing Ratio (CBR) test is a test which is considered empirical used to measure indirectly the shear strength of the soils. in addition, the California Bearing Ratio test was developed in U.S.A by the California Division of Highway in order to estimate the “bearing potential of subgrades and sub-bases in highway design”. Besides that, the (CBR) test consists on measuring the pressure required on a sample of a material in a mould, with a testing machine. Furthermore, on this test was used 1935 millimetres square plunger that penetrated into the sample at constant rate of “1mm/min).The mould referenced before which was used in practical measures a diameter of 0.152m and a height of 0.127m. so the soil was prepared in this mould after that it was put on the testing machine and readings were taken at every 0.25mm of shown on the testing until it reached 7.50mm of penetration. Furthermore, on this experiment, there are standard loads (13.2kN and 20.0kN) for crushed rock at 2.5mm and 5.0 mm of penetration respectively. Finally, after the experiment, it was possible to plot a graph of load (kN) against penetration (mm).
Experimental procedure:
1. “A sample of (9.4) kg should be prepared and material from this sample should be compacted in a standard CBR mould, at moisture content given, using appropriate compaction method”: the method consists on blowing sixty two times each 3 layers of soil on the prepared mould.
2. “The mould is then placed on the platen of the testing machine and the relevant seating force applied to the spicemen. BS 1377: Part 4: 1990 Para 7.4.3 requires:”
CBR value Seating force
Up to 5% 10kN
5% -30% 50kN
Above 30% 250kN
3. “The plunger is then to penetrate the spicemen at a uniform rate of 1mm/min. Readings of the required force are taken, at 0.25mm intervals of the penetration, up to a maximum penetration of 7.5mm (this depth of penetration must not be exceeded).
4. After the penetration test has been completed a sample of soil of about 40g was taken from immediately below the penetrated surface and the moisture content determined and the dry density calculated.
Some pictures of the practical
The California Bearing ratio Test
Results and calculations:
Table:
The table (Table 1) below shows, the values of penetration of plunger (mm) and its respective force on plunger (kN) and force gauge device. The readings show on the table represent values taken from the top.
Table 1
|
Penetration of plunger (mm) |
Force gauge reading device |
Force on plunger (kN) |
|
|
Top |
Top |
|
0.00 |
0 |
0.000 |
|
0.25 |
9 |
0.229 |
|
0.50 |
10 |
0.254 |
|
0.75 |
24 |
0.611 |
|
1.00 |
36 |
0.917 |
|
1.25 |
50 |
1.274 |
|
1.50 |
64 |
1.630 |
|
1.75 |
77 |
1.961 |
|
2.00 |
88 |
2.242 |
|
2.25 |
97 |
2.471 |
|
2.50 |
105 |
2.675 |
|
2.75 |
112 |
2.853 |
|
3.00 |
119 |
3.032 |
|
3.25 |
125 |
3.185 |
|
3.50 |
132 |
3.263 |
|
3.75 |
138 |
3.516 |
|
4.00 |
144 |
3.669 |
|
4.25 |
149 |
3.796 |
|
4.50 |
153 |
3.898 |
|
4.75 |
158 |
4.025 |
|
5.00 |
164 |
4.178 |
|
5.25 |
169 |
4.306 |
|
5.50 |
174 |
4.433 |
|
5.75 |
178 |
4.535 |
|
6.00 |
184 |
4.688 |
|
6.25 |
188 |
4.790 |
|
6.50 |
194 |
4.943 |
|
6.75 |
198 |
5.045 |
|
7.00 |
202 |
5.146 |
|
7.25 |
206 |
5.248 |
|
7.50 |
211 |
5.376 |
CBR values:
The value of the CBR:According to Table 1, the CBR value from the top force gauge reading at 2.5mm is given by:
the CBR value from the top force gauge reading at 5.0mm is given by:
The table 2, demonstrate the result of CBR at penetration of 2.5mm and 5.0mm.
Table 2
|
CBR Values at penetration of: |
2.5 mm |
5.0 mm |
|
Top |
20.26% |
20.89% |
Graph:
The following line graph illustrates the force on plunger (kN) against penetration (mm). Furthermore, the graph shows there was s slow increase on the force while the plunger penetrates.
Table of moisture content
Moisture Content
|
Container No. |
D |
|
|
Mass of wet soil + container (m2) |
g |
43.4 |
|
Mass of dry soil + container (m3) |
g |
39.2 |
|
Mass container (m1) |
g |
4.6 |
|
Mass of moisture (m2-m3) |
g |
4.2 |
|
Mass of dry soil (m3-m1) |
g |
43.6 |
|
Moisture content
|
% |
12.13% |
|
Average moisture content |
% |
12.13:% |
Dry Density:
Volume of the mould =
Where,
So, the Volume =
Dry density:
Mass of mould + soil + moisture = 9444.5 g
Mass of the mould = 5742.3 g
Therefore, the mass of the soil + moisture = 9444.5g – 5742.3g = 3702.3 g = 3.7023 kg
Therefore, Bulk density, ρ = 3.7023 / 0.002305 m3
ρ = 1606.2kg/m3 = 1.61 Mg/m2
Therefore, the dry density, ρd = (100 x bulk density)/(100+Average moisture content)
ρd = (100 x 1.61) / (100 + 12.13) = 1.4 Mg/m3
Discussion:
The California Bearing Ratio (CBR) test is a test developed in California, U.S.A in order to study the shear strength sample of soil normally used on subgrades of pavements. During this experiment, human’s error can easily be verified on taking the readings manually throughout the test. Perhaps, the addition of a software to help on taking the reading would minimize the possibly error on the test. On the CBR test, for the penetration of 2.5 mm and 5.0mm, the CBR values usually are evaluated. In addition, for the penetration 2.5mm and 5.0mm the CBR values were 20.26% and 20.89% respectively which means that the soil in question is good for subgrade (Summer, 2000). Moreover, soil with CBR less than 3% are considered poor in subgrades, a normal CBR value is considered a value from 3% to 5%. In addition, the material is considered good for the subgrade whenever it records a CBR value upper than 5%. However, in the United Kingdom, a soil is considered good for a subgrade as long the CBR value of this is upper than 2.5%, so according to the British Standard, the soil used in this experiment is more than suitable as subgrade for roads and pavements. At the end of the experiment the student have taken a sample of the soil tested in order to calculate the average moisture content and its dry density. In addition, the average moisture content was 12.13% and the dry density was 1608.3 kg/m3 or 1.61 Mg/m2. Finally to conclude, the California Bearing Ratio (CBR) test had CBR values of 20.26% and 20.89% for the penetration at 2.5mm and 5.0mm respectively, also had an average moisture content of 12.13%, and finally a dry density was 1608.3 kg/m3.
Conclusion:
to sum up, this CBR test report highlights the laboratory practical on its own and also the safety procedures that anyone has to follow while the test is proceeding. However, the CBR values calculated for penetration of 2.5mm and 5.0 mm were 20.26% and 20.89% respectively, which means that, the values in question tell us that, this soil is good for subgrade. Besides, average moisture content found was 12.13% and the dry density was 1.4 Mg/m3. Finally, it is also important to say that with this practical the student could see properly the subject leant on the the CBR lecture for Highway engineering.
Bibliography
Aggregate industries. (). Glossary of SUDS terms. Available: https://www.aggregate.com/documents/brochures/bitumen-safety-datasheet.pdf. Last accessed 10th Nov 2015.
Gorse, C, Johnston, D, & Pritchard, M 2013, California Bearing Ratio Test CBR Test, n.p.: Oxford University Press, Oxford Reference, EBSCOhost, viewed 11 November 2015.
Jiang, Y, Wong, L, & Ren, J 2015, Original Research Paper: A numerical test method of California bearing ratio on graded crushed rocks using particle flow modeling, Journal Of Traffic And Transportation Engineering (English Edition), 2, Functional Pavement Materials and Characterization, pp. 107-115, ScienceDirect, EBSCOhost, viewed 11 November 2015.
Pavement construction 1998, Public Works, 5, p. 32, General OneFile, EBSCOhost, viewed 11 November 2015.
Yildirim, B, & Gunaydin, O 2011, Review: Estimation of California bearing ratio by using soft computing systems, Expert Systems With Applications, 38, pp. 6381-6391, ScienceDirect, EBSCOhost, viewed 11 November 2015.
APPENDIX – I
A. Prior to Starting Work:
1. The laboratory’s supervisor must notify about the type of work to be performed.
2. Ensure that the lab staffs have removed chemicals, biologicals and safety hazards from the affected work area before starting the work.
3. There must be enough lights to give workers safe place to work in.
4. Washing hands facilities and soups must be provided in the lab.
B. Whilst Undertaking the Laboratory Work:
1. Workers must keep enough space between them and machines to avoid any accidents might happen.
2. Never touch or move anything in the lab unless the supervisor allowed.
3. If the content of any laboratory container has spilled, do not touch or effort to clean it up.
4. If any accident happened, the nearest lab worker must be contacted and the area must be left.
C. Prior to Departure of the Laboratory Session:
1. The location of the lab must be away from anything might provide hazards or anything do not want to under risk.
2. The laboratory must be spacious to allow people work flexibly.
3. There shall be appropriate ventilation to the work zone specially when working in small areas.
4. The laboratory must be ready-made with equipment, tools and machines.
D. Responsibilities:
1. Students must perform all work in a safe way
2. The laboratory manager must ensure maintenance and service operates are aware of special conditions that need additional protection.
3. The environmental health and safety should developing and applying guidance on working with polluted laboratory systems.
4. The manager of the laboratory must remove chemicals, biologicals and safety hazards from the working area.
APPENDIX – II
Risk Assessment Form:
|
Task – Hazards/Deficiencies |
Risk |
Current Controls |
||
|
|
WCO |
LIK |
LVL |
|
|
Noise which come from equipment or from hammering materials. |
MIN |
MOD |
LOW |
Workers must be wearing headphones to avoid the noise or the noise should be reduced. |
|
Some of the equipment and materials may affect eyes. |
MIN |
LOW |
MED |
Workers must protect their eyes by wearing glasses. |
|
Materials which cause skin diseases, such as, burning skin. |
MIN |
LOW |
MED |
Workers must be careful when loading the machine and they should wear gloves. |
Hazard Severity (WCO) the Risk Level (LVL):
|
MAJOR |
HIGH |
HIGH |
MED |
|
SERIOUS |
HIGH |
MED |
LOW |
|
MINOR |
MED |
LOW |
LOW |
|
|
HIGH |
MODRATE |
LOW |
|
|
HAZARD LIKELIHOOD |
Force on plunger (kN)/Penentration (mm)
Force on plunger (kN)/Penetration (mm) 0 0.25 0.5 0.75000000000000022 1 1.25 1.5 1.7500000000000002 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 5.75 6 6.25 6.5 6.75 7 7.25 7.5 0 0.22900000000000004 0.254 0.61100000000000021 0.91700000000000004 1.274 1.6300000000000001 1.9609999999999999 2.242 2.4709999999999992 2.6749999999999998 2.8529999999999993 3.0319999999999991 3.1850000000000001 3.2630000000000008 3.5159999999999991 3.669 3.7959999999999998 3.8979999999999997 4.0249999999999844 4.177999999999999 4.306 4.4330000000000016 4.5350000000000001 4.6879999999999988 4.79 4.9430000000000014 5.044999999999999 5.145999999999999 5.2480000000000002 5.3760000000000003 Column1 0 0.25 0.5 0.75000000000000022 1 1.25 1.5 1.7500000000000002 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 5.75 6 6.25 6.5 6.75 7 7.25 7.5 Series 3 0 0.25 0.5 0.75000000000000022 1 1.25 1.5 1.7500000000000002 2 2.25 2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5 5.25 5.5 5.75 6 6.25 6.5 6.75 7 7.25 7.5
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FileDescription.docx
File Description
SampleReport-CBR.docx: this is my friend report about cbr please do not copy.
PictureOfSpecimen.jpeg: picture of specimen
PictureOfMachineFor-CBR-test.jpeg: picture of the machine for cbr test
HighwayEngineeringA-CourseworkPart-1Brief.pdf: this is the brief of the course works
HealthyAndSafety.docx: this is the way i want you to do my risk assessment please in all my course works
MyCalculations.jpeg: this is my calculation from this year
MC-forGroupE.docx: I am in group e this is my calculation from this year
HealthyAndSafety.docx
Healthy and Safety:
Risk assessment
|
Hazard |
Risk |
||
|
|
WCO |
LIK |
LVL |
|
Chemical : mixing concrete can cause skin irritation |
2 |
5 |
10 |
|
Electrical : when working with electrical machine and there is water at sight |
5 |
3 |
15 |
|
Manual handling : lack of knowledge of manual handling can cause damage to the equipment |
2 |
3 |
6 |
|
Physical : falling items from the top can cause damage |
5 |
2 |
10 |
|
Burn : when steel welding burns can occur |
5 |
4 |
20 |
|
Slipping : the occurrence of water in sight can cause slipping |
3 |
5 |
15 |
Controlled risk assessment
|
Hazard |
Risk |
Hazard control |
||
|
|
WCO |
LIK |
LVL |
|
|
Chemical : mixing concrete can cause skin irritation |
2 |
2 |
4 |
Gloves must be worn at all times |
|
Electrical : when working with electrical machine and there is water at sight |
3 |
2 |
5 |
Water must be cleaned regularly and electric cables must be placed in a safe place away from water |
|
Manual handling : lack of knowledge of manual handling can cause damage to the equipment |
2 |
1 |
2 |
Before using the equipment workers must be taught how to handle the machine to prevent any damages |
|
Physical : falling items from the top can cause damage |
3 |
2 |
5 |
Helmets must be worn at all times |
|
Burn : when steel welding burns can occur |
3 |
2 |
5 |
Safety glasses and gloves must be worn all times to prevent skin burns |
|
Slipping : the occurrence of water in sight can cause slipping |
2 |
3 |
5 |
Safety boots must be worn and the water must be cleaned regularly |
According to the following table, the assessment in this report was provided
HighwayEngineeringA-CourseworkPart-1Brief.pdf
School of the Built Environment and Engineering
Highway Engineering A
Level 5
Module CRN: 22594
COURSEWORK PART 1 BRIEF
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
HIGHWAY ENGINEERING COURSEWORK PART 1-LABORATORY REPORT
Introduction
The coursework for this module consist of two parts- Part one is based on two sets of laboratory tests namely: Bitumen tests and the California Bearing Ratio test (CBR). The second part of the coursework is a highway design exercise and the brief will be issued separately.
For Part 1 of the coursework, each student must submit an individual technical
laboratory report on the TWO tests carried out. Please see 'Laboratory Report'
handout b e l o w for guidance on writing a laboratory report. You will be expected
to consult the appropriate British Standards and comment on the accuracy of the
work undertaken. In addition, your comments should include the potential
applications of the test results in building and civil engineering practice. The use of
spreadsheets and word processing in the calculation of the laboratory test results
and the write up of the experiment will be actively encouraged. Each student will
also include a Risk Assessment and Safe Working Procedure as part of their
laboratory report. Details of how to carry out the tests are included in the Appendix.
Assessment
The marking scheme for coursework Part 1 will be as follows:
1) A Laboratory Report -for both the CBR and bitumen tests:
See next page 'Laboratory Report' 80 marks 2) Key skills
Safe Working Procedure and Risk Assessment* 10 marks
Presentation of report* 5 marks
Library use (reference to published results/BS) 5 marks
Submission details
This module requires you to submit paper copies of your work. You MUST complete an Assignment Submission Form and submit the work with the form securely attached. Please note: Tutors will follow up any suspected cheating, plagiarism, self-plagiarism, collusion and other forms of unfair practice found after the submission date as per University policy. Late penalties will apply as per University regulations.
The submission will consist of a bound copy of your report including the safe working procedure and risk assessment sheets for both sets of tests.
Deadline and where to submit your report
The deadline for submission of this work is Thursday 23 March 2017by 3.00PM, at Broadcasting Place reception.
Feedback
General feedback will be provided at one of the lecture sessions after the submission of the work (27th April 2017). More detailed individual feedback will be given on the report that will be handed back around this time. Take time to read and understand your feedback and contact the lecturer at the earliest opportunity for further clarification if necessary.
LEEDS BECKETT UNIVERSITY
HIGHWAY ENGINEERING A
TITLE PAGE
(1) Title of Experiment,
LABORATORY REPORT LAYOUT
(2) Name of student , course and level
(3) Group & Date of performing the experiment(s) (4) Lecturer's name
ABSTRACT
Summarises essential aspects of the report:
(1) The purpose of the experiment (2) Key findings
(3) Significance
(4) Major conclusions
INTRODUCTION
Explain very briefly the purpose of the experiment and important background/theory.
The introduction should be more focused than the abstract, stating the subject matter of the report clearly and concisely, in a few sentences.
EXPERIMENTAL PROCEDURE
Only note down anything that you did different than what is quoted in the laboratory
handout and/or the corresponding BS (describe the process in chronological order).
CALCULATIONS AND RESULTS
Show only one typical calculation on the data obtained from the experiment and then
tabu late the results of your analysis - spreadsheets. Present the analysed data in
figures or tables to indicate what knowledge has been gained from the experiment.
DISCUSSION
Points to consider when writing the discussion {the most important part of your report):
• Are your values of the right order of magnitude, i.e. are they in keeping with typical
values in textbooks? What does your textbook say about the materials relevant to
this experiment?
• Could the experiment be improved?
• According to theory, how should the material behave- how did it behave?
• What has the experiment taught you about the material you were testing?
• What have you learned?
Quotations from textbooks are perfectly acceptable provided that the whole report is
not copied from a book and also provided that the source of the information is
acknowledged.
CONCLUSIONS
Be brief. The conclusions s h o u l d b e concise s t a t e m e n t s , which arise from y o u r
discussion - they can be negative or positive.
REFERENCES-Harvard/Numeric style (including the date of accessing any website)
APPENDIX I- Raw data and calculations - no comments required.
APPENDIX II- Safe Working Procedure
APPENDIXIll-RiskAssessment
Presentation - The laboratory report must be word processed and graphs produced
on Excel and labeled correctly, etc.
LEEDS BECKETT UNIVERSITY
HIGHWAY ENGINEERING A
NOTES ON LABORATORY REPORT
Note: write the report in the third person
ABSTRACT
The abstract often also includes a brief reference to theory or methodology . The abstract should be one or two paragraphs of 100-200 words. For example:
This experiment examined the effect of......................... The test was to determine............ ... Five samples were tested ................ Each condition was
.................. Results showed that ............................. This last result is contrary to theory/expectations ................... . These results have important applications in...............
INTRODUCTION
Example: The purpose of this experiment was to identify
These were determined using the ?????method/machine.
Note:
The experiment is already finished. Use the past tense when talking
about the experiment. "The objective of the experiment was... "
The report, the theory and permanent equipment still exist; therefore,
these get the present tense: "The purpose of this report is...", "Newton's
Law is ..." & "The CBR test produces . .."
EXPERIMENTAL PROCEDURE
As noted above.
CALCULATIONS AND RESULTS
Note:
(1) Number and Title tables and graphs (Table - title at top, Figure - title at bottom;
both starting from 1.1, 1.2..., 2.1, 2.2..., etc. for each section)
(2) Use a sentence or two to draw attention to key points in tables or graphs (3) Provide sample calculation only
(4) State key result in sentence form
DISCUSSION
Points to consider: (1) Compare expected results with those obtained- if there were differences, how
can you account for them? Saying "human error" implies you're incompetent. Be
specific; for example, the instruments could not measure precisely, the sample
was not pure or was contaminated, or calculated values did not take account of
friction etc.
(2) Analyse experimental error- Was it avoidable? Was it a result of equipment? If an experiment was within the tolerances, you can still account for the difference
from the ideal. If the flaws result from the experimental design explain how the
design might be improved.
(3) Explain your results in terms of theoretical issues - Often undergraduate labs are intended to illustrate important physical laws. Usually you will have discussed
these in the introduction. In this section move from the results to the theory. How
well has the theory been illustrated?
(4) Relate results to your experimental objective(s) - If you set out to identify an
unknown, state the answer.
LEEDS BECKETT UNIVERSITY
APPENDIX - Ill RISK ASSESSMENT FORM For example:
HIGHWAY ENGINEERING A
TASK- HAZARDS/DEFICIENCIES
RISK* CURRENT CONTROLS
REMEDIAL MEASURES; CONTROLS ,
ACTION :COMMENTS . (including action date)
wco LIK LVL
MACHINERY HAZARDS:
1. TRAPS: The body or limb(s) become trapped between closing or passing motions of the machine. In some cases the trap occurs when the limb(s) are drawn into a closing motion.
MIN
LOW
LOW
Guards - difficult to bypass or disable, emergency shutdown, training in correct use, location allows the equipment to be used safely.
Training: for students to attend all
lectures (Jan - May 2015)
etc etc etc etc etc etc
etc etc etc etc etc etc
LEEDS BECKETT UNIVERSITY
HAZARD SEVERITY (WCO) THE RISK LEVEL (LVL)
MAJOR
HIGH
HIGH
MED
SERIOUS
HIGH
MED
LOW
MINOR
MED
LOW
LOW
HIGH
MODERATE
LOW
HAZARD LIKELIHOOD
RISK ASSESSMENT FORM
RISK= WORST CASE OUTCOME X LIKELIHOOD OF OCCURRENCE
HIGHWAYS ENGINEERING A
HAZARD LIKELIHOOD (LIK): THREE POINT SCALE
HAZARD SEVERITY WORST CASE OUTCOME (WCO): THREE POINT SCALE
MAJOR (MAJ): Condition I Practice Likely to Cause: -
permanent disability
loss of life
HIGH ( HIG): Likely to happen. Common/regular or frequent occurrence i.e.
Daily, several times per day/weekly, every few weeks
MODERATE (MOD): Probable to happen. Occasional occurrence - loss/harm may
occur, once a month or several times a year.
loss of body part (to one or more persons)
major injury notifiable under Reporting of Injuries, Diseases and Dangerous
Occurences Regulations (RIDDOR) 1985.
extensive loss of plant or equipment or building
dangerous occurences as specified under RIDDOR.
SERIOUS (SER): ConditionIPractice which may Result in:-
serious injury or illness resulting in temporary disability to one or more persons, in
excess of 3 days
damage to plant,equipment or buildings,which result in disruption to normal activities .
LOW (LOW): Possible to happen. Not a frequent/regular occurrence -
loss/harm may occur once a year , unlikely but cannot be ruled
out.
MINOR (MI N): Conditions I Practi ce which may resul t in: -
minor/disabling injury or illness which may involve some lost time (of at least one hour
but not more than 3 days)
no injury or illness (near miss) but results in some minor disruptive damage to plant,
equipment or building property.
THE RISK LEVEL - ACTION BY
HIGH IMMEDIATE ACTION REQUIRED, refer to the Head of School and cancel task if risk too great
MEDIUM ACTION PRIOR TO TASK to remove or reduce risk.
LOW Ensure appropriate safety briefing
• NOTE: If Medium or Low risks could affect 50 or more people, use the next
higher risk zone for action.
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
CALIFORNIA BEARING RATIO
As part of your laboratory experiment/report you MUST complete the follow ing:
A. PRIOR TO STARTING WORK
1.
2.
3.
4.
B. WHILST UNDERTAKING THE LABORATORY WORK
1.
2.
3.
4.
C. PRIOR TO DEPARTURE OF THE LABORATORY SESSION
1.
2.
3.
4.
D. RESPONSIBILITIES
1.
2.
3.
4.
Please continue on a separate sheet if necessary
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
RISK ASSESSMENT (RA) FORM
CALIFORNIA BEARING RATIO As part of your laboratory experiment/report you MUST complete the following:
TASK- HAZARDS/DEFICIENCIES
RISK* CURRENT CONTROLS
REMEDIAL MEASURES; CONTROLS ,
ACTION: COMMENTS. (including action date)
wco LIK LVL
Please continue on a separate sheet if necessary
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
BITUMEN TESTS As part of your laboratory experiment/report you MUST complete the following:
A. PRIOR TO STARTING WORK
1.
2.
3.
4.
B. WHILST UNDERTAKING THE LABORATORY WORK
1.
2.
3.
4.
C. PRIOR TO DEPARTURE OF. THE LABORATORY SESSION
1.
2.
3.
4.
D. RESPONSIBILITIES
1.
2.
3.
4.
Please continue on a separate sheet if necessary
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
RISK ASSESSMENT (RA) FORM
BITUMEN TESTS As part of your laboratory experiment/report you MUST complete the following:
TASK- HAZARDS/DEFICIENCIES
RISK* CURRENT CONTROLS
REMEDIAL MEASURES; CONTROLS ,
ACTION; COMMENTS. (including action date)
wco LIK LVL
Please continue on a separate sheet if
necessary
COURSEWORK PART 1- APPENDICES
DESCRIPTION OF TESTS
COURSEWORK PART 1
A. APPENDIX 1: BITUMENT TESTS
COURSEWORK PART 1
B. APPENDIX 2: CALIFORNIA BEARING RATIO TEST (CBR)
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
HIGHWAY ENGINEERING COURSEWORK PART 1-LABORATORY REPORT
Introduction
The coursework for this module consist of two parts- Part one is based on two sets of laboratory tests namely: Bitumen tests and the California Bearing Ratio test (CBR). The second part of the coursework is a highway design exercise and the brief will be issued separately.
For Part 1 of the coursework, each student must submit an individual technical
laboratory report on the TWO tests carried out. Please see 'Laboratory Report'
handout b e l o w for guidance on writing a laboratory report. You will be expected
to consult the appropriate British Standards and comment on the accuracy of the
work undertaken. In addition, your comments should include the potential
applications of the test results in building and civil engineering practice. The use of
spreadsheets and word processing in the calculation of the laboratory test results
and the write up of the experiment will be actively encouraged. Each student will
also include a Risk Assessment and Safe Working Procedure as part of their
laboratory report. Details of how to carry out the tests are included in the Appendix.
Assessment
The marking scheme for coursework Part 1 will be as follows:
1) A Laboratory Report -for both the CBR and bitumen tests:
See next page 'Laboratory Report' 80 marks 2) Key skills
Safe Working Procedure and Risk Assessment* 10 marks
Presentation of report* 5 marks
Library use (reference to published results/BS) 5 marks
Submission details
This module requires you to submit paper copies of your work. You MUST complete an Assignment Submission Form and submit the work with the form securely attached. Please note: Tutors will follow up any suspected cheating, plagiarism, self-plagiarism, collusion and other forms of unfair practice found after the submission date as per University policy. Late penalties will apply as per University regulations.
The submission will consist of a bound copy of your report including the safe working procedure and risk assessment sheets for both sets of tests.
Deadline and where to submit your report
The deadline for submission of this work is Thursday 23 March 2017by 3.00PM, at Broadcasting Place reception.
Feedback
General feedback will be provided at one of the lecture sessions after the submission of the work (27th April 2017). More detailed individual feedback will be given on the report that will be handed back around this time. Take time to read and understand your feedback and contact the lecturer at the earliest opportunity for further clarification if necessary.
LEEDS BECKETT UNIVERSITY
HIGHWAY ENGINEERING A
TITLE PAGE
(1) Title of Experiment,
LABORATORY REPORT LAYOUT
(2) Name of student , course and level
(3) Group & Date of performing the experiment(s) (4) Lecturer's name
ABSTRACT
Summarises essential aspects of the report:
(1) The purpose of the experiment (2) Key findings
(3) Significance
(4) Major conclusions
INTRODUCTION
Explain very briefly the purpose of the experiment and important background/theory.
The introduction should be more focused than the abstract, stating the subject matter of the report clearly and concisely, in a few sentences.
EXPERIMENTAL PROCEDURE
Only note down anything that you did different than what is quoted in the laboratory
handout and/or the corresponding BS (describe the process in chronological order).
CALCULATIONS AND RESULTS
Show only one typical calculation on the data obtained from the experiment and then
tabu late the results of your analysis - spreadsheets. Present the analysed data in
figures or tables to indicate what knowledge has been gained from the experiment.
DISCUSSION
Points to consider when writing the discussion {the most important part of your report):
• Are your values of the right order of magnitude, i.e. are they in keeping with typical
values in textbooks? What does your textbook say about the materials relevant to
this experiment?
• Could the experiment be improved?
• According to theory, how should the material behave- how did it behave?
• What has the experiment taught you about the material you were testing?
• What have you learned?
Quotations from textbooks are perfectly acceptable provided that the whole report is
not copied from a book and also provided that the source of the information is
acknowledged.
CONCLUSIONS
Be brief. The conclusions s h o u l d b e concise s t a t e m e n t s , which arise from y o u r
discussion - they can be negative or positive.
REFERENCES-Harvard/Numeric style (including the date of accessing any website)
APPENDIX I- Raw data and calculations - no comments required.
APPENDIX II- Safe Working Procedure
APPENDIXIll-RiskAssessment
Presentation - The laboratory report must be word processed and graphs produced
on Excel and labeled correctly, etc.
LEEDS BECKETT UNIVERSITY
HIGHWAY ENGINEERING A
NOTES ON LABORATORY REPORT
Note: write the report in the third person
ABSTRACT
The abstract often also includes a brief reference to theory or methodology . The abstract should be one or two paragraphs of 100-200 words. For example:
This experiment examined the effect of......................... The test was to determine............ ... Five samples were tested ................ Each condition was
.................. Results showed that ............................. This last result is contrary to theory/expectations ................... . These results have important applications in...............
INTRODUCTION
Example: The purpose of this experiment was to identify
These were determined using the ?????method/machine.
Note:
The experiment is already finished. Use the past tense when talking
about the experiment. "The objective of the experiment was... "
The report, the theory and permanent equipment still exist; therefore,
these get the present tense: "The purpose of this report is...", "Newton's
Law is ..." & "The CBR test produces . .."
EXPERIMENTAL PROCEDURE
As noted above.
CALCULATIONS AND RESULTS
Note:
(1) Number and Title tables and graphs (Table - title at top, Figure - title at bottom;
both starting from 1.1, 1.2..., 2.1, 2.2..., etc. for each section)
(2) Use a sentence or two to draw attention to key points in tables or graphs (3) Provide sample calculation only
(4) State key result in sentence form
DISCUSSION
Points to consider: (1) Compare expected results with those obtained- if there were differences, how
can you account for them? Saying "human error" implies you're incompetent. Be
specific; for example, the instruments could not measure precisely, the sample
was not pure or was contaminated, or calculated values did not take account of
friction etc.
(2) Analyse experimental error- Was it avoidable? Was it a result of equipment? If an experiment was within the tolerances, you can still account for the difference
from the ideal. If the flaws result from the experimental design explain how the
design might be improved.
(3) Explain your results in terms of theoretical issues - Often undergraduate labs are intended to illustrate important physical laws. Usually you will have discussed
these in the introduction. In this section move from the results to the theory. How
well has the theory been illustrated?
(4) Relate results to your experimental objective(s) - If you set out to identify an
unknown, state the answer.
LEEDS BECKETT UNIVERSITY
HIGHWAY ENGINEERING A
(5) Compare your results to similar investigations - In some cases, it is legitimate
to compare outcomes with classmates, not to change your answer, but to look for
any anomalies between the groups and discuss those.
(6) Analyze the strengths and limitations of your experimental design - This is
Particularly useful to demonstrate your understanding of the experiment.
CONCLUSIONS Note:
(1) State what is known
(2) Justify statement
(3) State significance (4) Suggest further research
REFERENCES
As noted above.
APPENDIX-I Typically include such elements as raw data, calculations, graphs pictures or tables that have not been included in the report itself. Each kind of item should be contained
in a separate appendix. Make sure you refer to each appendix at least once in your report.
Taken from: http://www.ecf.utoronto.cal-writinglhandbook-lab.html (Date of accessing the website)
APPENDIX- II
SAFE WORKING PROCEDURE For example:
A. PRIOR TO STARTING WORK
1. Ensure that you have no loose clothing, jewellery , hair, etc.
2. etc 3. etc 4. etc
B. WHILST UNDERTAKING THE LABORATORY WORK
1. Before the laboratory equipment is switched on ensure that there are no foreign bodies within the area.
2. etc 3. etc 4. etc
C. PRIOR TO DEPARTURE OF THE LABORATORY SESSION
1. Ensure that the laboratory equipment and the surrounding area are left in a safe condition, e.g. no trip hazards are left on the floor.
2. etc 3. etc
4. etc
D. RESPONSIBILITIES
1. Any accidents, injuries or unsafe conditions observed will be notified
immediately to Killian Ngong or Anthony Smith at Leeds Beckett University.
2. etc 3. etc 4. etc
LEEDS BECKETT UNIVERSITY
APPENDIX - Ill RISK ASSESSMENT FORM For example:
HIGHWAY ENGINEERING A
TASK- HAZARDS/DEFICIENCIES
RISK* CURRENT CONTROLS
REMEDIAL MEASURES; CONTROLS ,
ACTION :COMMENTS . (including action date)
wco LIK LVL
MACHINERY HAZARDS:
1. TRAPS: The body or limb(s) become trapped between closing or passing motions of the machine. In some cases the trap occurs when the limb(s) are drawn into a closing motion.
MIN
LOW
LOW
Guards - difficult to bypass or disable, emergency shutdown, training in correct use, location allows the equipment to be used safely.
Training: for students to attend all
lectures (Jan - May 2015)
etc etc etc etc etc etc
etc etc etc etc etc etc
LEEDS BECKETT UNIVERSITY
HAZARD SEVERITY (WCO) THE RISK LEVEL (LVL)
MAJOR
HIGH
HIGH
MED
SERIOUS
HIGH
MED
LOW
MINOR
MED
LOW
LOW
HIGH
MODERATE
LOW
HAZARD LIKELIHOOD
RISK ASSESSMENT FORM
RISK= WORST CASE OUTCOME X LIKELIHOOD OF OCCURRENCE
HIGHWAYS ENGINEERING A
HAZARD LIKELIHOOD (LIK): THREE POINT SCALE
HAZARD SEVERITY WORST CASE OUTCOME (WCO): THREE POINT SCALE
MAJOR (MAJ): Condition I Practice Likely to Cause: -
permanent disability
loss of life
HIGH ( HIG): Likely to happen. Common/regular or frequent occurrence i.e.
Daily, several times per day/weekly, every few weeks
MODERATE (MOD): Probable to happen. Occasional occurrence - loss/harm may
occur, once a month or several times a year.
loss of body part (to one or more persons)
major injury notifiable under Reporting of Injuries, Diseases and Dangerous
Occurences Regulations (RIDDOR) 1985.
extensive loss of plant or equipment or building
dangerous occurences as specified under RIDDOR.
SERIOUS (SER): ConditionIPractice which may Result in:-
serious injury or illness resulting in temporary disability to one or more persons, in
excess of 3 days
damage to plant,equipment or buildings,which result in disruption to normal activities .
LOW (LOW): Possible to happen. Not a frequent/regular occurrence -
loss/harm may occur once a year , unlikely but cannot be ruled
out.
MINOR (MI N): Conditions I Practi ce which may resul t in: -
minor/disabling injury or illness which may involve some lost time (of at least one hour
but not more than 3 days)
no injury or illness (near miss) but results in some minor disruptive damage to plant,
equipment or building property.
THE RISK LEVEL - ACTION BY
HIGH IMMEDIATE ACTION REQUIRED, refer to the Head of School and cancel task if risk too great
MEDIUM ACTION PRIOR TO TASK to remove or reduce risk.
LOW Ensure appropriate safety briefing
• NOTE: If Medium or Low risks could affect 50 or more people, use the next
higher risk zone for action.
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
CALIFORNIA BEARING RATIO
As part of your laboratory experiment/report you MUST complete the follow ing:
A. PRIOR TO STARTING WORK
1.
2.
3.
4.
B. WHILST UNDERTAKING THE LABORATORY WORK
1.
2.
3.
4.
C. PRIOR TO DEPARTURE OF THE LABORATORY SESSION
1.
2.
3.
4.
D. RESPONSIBILITIES
1.
2.
3.
4.
Please continue on a separate sheet if necessary
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
RISK ASSESSMENT (RA) FORM
CALIFORNIA BEARING RATIO As part of your laboratory experiment/report you MUST complete the following:
TASK- HAZARDS/DEFICIENCIES
RISK* CURRENT CONTROLS
REMEDIAL MEASURES; CONTROLS ,
ACTION: COMMENTS. (including action date)
wco LIK LVL
Please continue on a separate sheet if necessary
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
BITUMEN TESTS As part of your laboratory experiment/report you MUST complete the following:
A. PRIOR TO STARTING WORK
1.
2.
3.
4.
B. WHILST UNDERTAKING THE LABORATORY WORK
1.
2.
3.
4.
C. PRIOR TO DEPARTURE OF. THE LABORATORY SESSION
1.
2.
3.
4.
D. RESPONSIBILITIES
1.
2.
3.
4.
Please continue on a separate sheet if necessary
LEEDS BECKETT UNIVERSITY HIGHWAY ENGINEERING A
SAFE WORKING PROCEDURE
RISK ASSESSMENT (RA) FORM
BITUMEN TESTS As part of your laboratory experiment/report you MUST complete the following:
TASK- HAZARDS/DEFICIENCIES
RISK* CURRENT CONTROLS
REMEDIAL MEASURES; CONTROLS ,
ACTION; COMMENTS. (including action date)
wco LIK LVL
Please continue on a separate sheet if
necessary
COURSEWORK PART 1- APPENDICES
DESCRIPTION OF TESTS
COURSEWORK PART 1
A. APPENDIX 1: BITUMENT TESTS
COURSEWORK PART 1
B. APPENDIX 2: CALIFORNIA BEARING RATIO TEST (CBR)
PictureOfMachineFor-CBR-test.jpg
MyCalculations.jpg
MC-forGroupE.docx
Group E
I AM IN GROUP E , SO MY CALCULATIONS OF THIS YEAR
Moisture Content
|
Container No. |
E |
|
|
|
|
|
Mass of wet soil + container (m2) |
g |
31.3 |
N/A |
N/A |
N/A |
|
Mass of dry soil + container (m3) |
g |
29.0 |
N/A |
N/A |
N/A |
|
Mass container (m1) |
g |
5.3 |
N/A |
N/A |
N/A |
|
Mass of moisture (m2-m3) |
g |
|
|
|
|
|
Mass of dry soil (m3-m1) |
g |
|
|
|
|
|
Moisture content
|
% |
|
|
|
|
|
Average moisture content |
% |
|
1
23
31
mm
w
mm
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