Practical Assessment - Apply Basic Levelling Procedures

© Canberra Institute of Technology Page 1 of 14 Date created: 21/06/2022
CRICOS No. 00001K | RTO Code 0101 Date updated: 15/08/2022
Observation/Practical Assessment
Student Name: CIT Number:
Name of Subject:
Apply Basic Levelling Procedures
NAT ID:
CPCCCM2006
CRN:
Assessment Name Apply Basic Levelling
Assessment Date
Student Statement
This assignment is my own work, except where I have acknowledged the use of the works of other
people. I understand that by submitting this assessment electronically, I agree to this statement.
Student Signature: Date:
Privacy Disclaimer
CIT is collecting your personal information for assessment purposes. The information will only be used in
accordance with the CIT Privacy Policy.
Assessor Feedback
Attempt 1 ☐ Satisfactory ☐ Not Yet Satisfactory Date:
Attempt 2 ☐ Satisfactory ☐ Not Yet Satisfactory Date:
Assessor Signature: Date:
Note from Assessor (including any reasonable adjustment):
Student Information
Review the important information below in relation to this assessment task.
Instructions

Assessment Task Instructions for Students
You will be required to submit the following documents on completion
 Task 1 Read and understand all aspect of this assessment including instructions, plans,
specifications and marking requirements and standards before commencing.
 Task 2 Complete the ‘Safety Signs ID’ questionnaire, the ‘Non-Verbal Communication’
questionnaire, JSA (Job Safety Analysis) and Toolbox talk in Ready Skills
 Practical 1 Set out a site
 Practical 2 Check a spirit level for accuracy. Measure and record change in natural ground
level
 Practical 3 Use water level to determine the change in natural ground level.
 Practical 4 Check laser level for accuracy and calculate the variance in natural ground level
 Practical 5 Use a plumb-bob to determine the vertical accuracy of a wall
 Task 3 Clean-up work site, materials, and tools
For all tasks below:
 All Tripods & Staves are to be inspected for damage or faults prior to use.
 All Tripods are to set up stable and secure and in accordance with manufacturer’s
instruction.
 All Optical levels are to be installed securely and in accordance with
manufacturer’s instruction and checked for accuracy.
Practical 1: Site set up.
Start by confirming your work area with your facilitator. You are required to find the change in natural
ground level (NGL) of the site compared to a datum point or survey peg.
 Mark 6 points at 1200mm centres with marking paint or survey pegs along a run of sloped
ground or down a set of stairs.

 Number each point or peg 1 to 6.
 Sketch what the site looks like from the side, this is called an ELEVATION. It does not have to be
to scale. Your sketch should show roughly where each peg is and its number.
Practical 2: Using a spirit level.
Checking equipment accuracy
Before starting you will check the accuracy of the spirit level using a two-peg test.
 On a stable workbench surface, drive a nail into the benchtop approximately 20mm back from
Datum
2
3
4
5
6
1

either end of the spirit level leaving the head of the nail 10mm above the surface of the table.
 Place the spirit level on the nails so that it spans between them.
The bubble will move to the high side of the spirit level.
 Drive either the left or right nail further down until the bubble is in the centre of the two rings
when viewed from directly overhead.
 Turn the spirit level around, end to end, and check that the bubble is in the same position. If it is
not, this means that the spirit level is not accurate and need to be recalibrated.
 Remove the nails from the benchtop.
Leveling using a spirit level and straight edge
Now that you have checked the accuracy of your equipment you can begin work.
You will be using your level to calculate the difference in ground level from the datum point. Using a
1200mm spirit level and a 2.4m or larger straight edge you will find the change in height of the natural
ground level (NGL).
 Identify the datum point and place one end of the straight edge on the ground at that point and
the other end on point number 1.
 Place the level on top of the straight edge and adjust the height of the straight edge at the low
end until the bubble sits evenly between the two-gauge lines.

 Make sure that the high end of the level is sitting correctly on the other point, and the level is still
correct, measure from the ground to the underside of the straight edge and record the change in
height between each peg.
 Repeat the process for each point, recording each measurement in the table below
 To calculate the difference in ground height from the datum, either add or subtract the
difference in height depending on which point was higher.
If the ground runs uphill, add the difference in height, if it runs downhill, subtract the difference
in height between pegs.
 Record your results in the table provided.
Practical 3: Using a water level
Now we are going to use a water level to find the change in ground height from the datum point. This
method is particularly useful when it is impossible to get a clear line of site between two points.
 Siphon water from a bucket into a clear tube so there are no air bubbles anywhere in the water
column. If there are any bubbles, tap the tube while it is on a slope to force the bubbles to the
surface.
Hold your thumb over the end when moving the tube to stop water leaking from either end.

 To check that the water level is accurate hold
both ends next to each other. If the water levels
match, it is calibrated, if not there is probably air
in the tube somewhere.
 Hold one end of the tube at the datum point so
that the water line is level with the top of the
peg.
Remember to measure from the bottom of the
meniscus.
 Get a partner to hold the datum end of the tube
or secure it to the datum with tape and move
the opposite end of the tube to each point/peg.
If you are completing this task on your own mark the height of the water on the tube at the
moving end of the tube with a marker when the water level is at the top of the datum peg.
 Raise or lower the tube while your
partner checks the datum point until the water
level remains level with the top of the
datum peg/point. Raising the moving end will
raise the water level at the datum.
Lowering it will lower the water level at the
datum.
If you are completing the task alone move the
tube until the water lines up with your
previous mark.
 Measure the difference in height from the
ground to the water level and record the
distance in the table on the last page.
 Calculate the difference in ground height by subtracting the height of the peg at the datum from
each measurement.
Practical 4: Using a laser level
Checking equipment accuracy
 Read the safe operating procedure document that comes with each laser before you start work.
 Set up your laser level on a tripod on stable and even ground, approximately 3 meters away from
a wall.

 Mark the laser line at two points approximately 2 metres apart on a wall.
 Move the laser level to a different position that allows you to mark new lines directly above or
below your original marks.
 Measure the distance between your old and new marks at both positions. If the distance
between these two measurements is different, the device requires recalibration.
Levelling using a laser level
In this task you will be measuring and recording the heights of
different points on the ground to find the change in height from the
natural ground level (NGL).
 Set up your laser level on stable and even ground and
adjust the legs to get the laser body almost level.
If it is possible, set up the laser so the beam can reach all the
points you would like to measure, so you don’t have to
move the laser halfway through.
 Turn on the laser and allow it to self-level in the new
position.
DO NOT MOVE the laser unless it has been turned off.
 Attach the laser reader to a staff or straight edge using the laser reader clamp and place the
bottom of the straight edge on the ground at the datum point/peg.
 Hold the staff plumb, using the bullseye level in the reader clamp to check this.

 Adjust the height of the laser reader until it
is in line with the beam from the laser body.
The readout screen will tell you which
direction it must be moved. When it is in line
it will show a dash and make a continuous
beep. Tighten the screw on the reader
body.
 Mark the position of the clamp on the staff with a pencil so that the mark can be removed at the
end of this task.
 Move the staff to the next point and change the height of the reader to be level with the laser
beam.
 Measure the difference between the datum mark and the new position of the laser reader clamp
and record this in the table at the end of this handout.
Make sure you measure to the same part of the reader every time.
Down Level Up

 To calculate the change in ground height,
If the reader was below the datum mark on the straight edge, the number is positive. Positive
numbers mean the ground is higher than the datum.
If the reader was above the datum mark, the number is negative.
Negative numbers mean the ground is lower than the datum.
Practical 5: Using a plumb-bob
We have used several methods to work out the change in height on the horizontal plane.
Now we will work in the vertical plane to find how plumb a wall is.

 Hang a plumb bob from the top of a wall or a set height and allow it
to hang freely.
It can be secured to the wall or held by hand if it does not move.
 Hold the plumb bob still and gently release it so that it does not
sway while it hangs
 Measure the distance from the string to the wall at the top and
bottom of the wall and record this in the table on the last page.
 Calculate the change in the wall from the bottom of the wall by
taking the bottom measurement and subtracting the top
measurement.
A negative number means the top of the wall sits further in than the
bottom, a positive number shows the opposite.
TASK 8: Clean-up work site, materials, and tools
 All tools and equipment are to be cleaned, checked for faults, and returned to stores.
 All excess materials to be stowed in the racks.
 The work site must be clean and free of hazards.

Please complete table after the Observation Check List
Time Allowed
6 hours
Assessment Conditions
Assessment will be always conducted in simulated work environment at CIT Bruce under teacher
supervision. The assessment will be stopped at any time if the Assessor deems it unsafe. Access to all
resources, manuals and standards are permitted. All mobile phones are to be switched off during
assessment
Materials Provided by CIT
All materials and tools required to complete the task will be provided.
Materials You Need
PPE, Pen, BYOD
Attempts
You may have at least two (2) attempts for this assessment.
 If your first attempt is not successful, your teacher will discuss your results with you and will arrange
a second attempt.
 If your second attempt is not successful, you may be required to re-enrol in this unit.
Please refer to the CIT Assessment Policy if you have any questions.

© Canberra Institute ofTechnology RTO Code 0101 Page 12 of 14 Date created: 21/06/2022
cit.edu.au Date updated: 15/08/2022
Carry Out Levelling - Observation Checklist
Attempt 1 Attempt 2
S NYS S NYS
T1: Student was able to interpret and apply relevant work instruction and complete all documentation
given.
☐ ☐ ☐ ☐
Student was able to read and interpret plans, site drawings and specifications ☐ ☐ ☐ ☐
T2: Student usedwritten and verbal communicationskills during this topic, alsocompletedthe non-
verbal communicationdocument
☐ ☐ ☐ ☐
Student worked with others in a team to achieve giventasks. ☐ ☐ ☐ ☐
Student activelyparticipatedin a toolbox talk andagreed to its content ☐ ☐ ☐ ☐
Student contributed to the development of a JSA andits control rating, withconsideration to
environmental requirements
☐ ☐ ☐ ☐
Student correctly selectedand used PPE for given tasks ☐ ☐ ☐ ☐
Student carriedout task inaccordance with the JSA and organisational policies andprocedures. ☐ ☐ ☐ ☐
Student listedandselectedthe correct materials for the giventasks ☐ ☐ ☐ ☐
Student listedandselectedthe correct tools for the giventasks ☐ ☐ ☐ ☐
T3
P1:
Student was observed completing the following tasks:
Checked tools and equipment for serviceabilityandreported any faults to the appropriate
person.
☐ ☐ ☐ ☐
Accurately set out survey points or pegs. ☐ ☐ ☐ ☐
Produced a sketch of the area being measuredshowing the positionand number of eachpeg. ☐ ☐ ☐ ☐
T4
P2:
Checked Spirit level and straight edge for serviceabilityand reported any faults tothe
appropriate person.
☐ ☐ ☐ ☐
Correctly checked spirit level for accuracy. ☐ ☐ ☐ ☐
Accurately measuredandrecorded heights. ☐ ☐ ☐ ☐
Correctly calculated variance of marked points from the datum ☐ ☐ ☐ ☐

© Canberra Institute ofTechnology RTO Code 0101 Page 13 of 14 Date created: 21/06/2022
T5
P3:
Checked water level for serviceabilityandreported any faults to the appropriate person. ☐ ☐ ☐ ☐
Correctly set up and checked water level for accuracy. ☐ ☐ ☐ ☐
Accurately measuredandrecorded height between datum and points. ☐ ☐ ☐ ☐
Correctly calculatedvariance of marked points from the datum ☐ ☐ ☐ ☐
T6
P4:
The student was observed completing the following tasks:
Checked laser equipment for serviceabilityandreported any faults tothe appropriate person. ☐ ☐ ☐ ☐
Correctly checked laser level for accuracy according to manufactures instructions. ☐ ☐ ☐ ☐
Accurately set datum point using laser reader and a staff. ☐ ☐ ☐ ☐
Accurately measuredandrecorded heights at each point. ☐ ☐ ☐ ☐
Correctly calculatedvariance of marked points from the datum ☐ ☐ ☐ ☐
T7
P5:
Checked tools and equipment for serviceabilityandreported any faults to the appropriate
person
☐ ☐ ☐ ☐
Safelyand accurately set up a plumb bob. ☐ ☐ ☐ ☐
Accurately measuredandrecorded distance to wall at top andbottom of wall ☐ ☐ ☐ ☐
Correctly calculatedvariance inthe top of the wall from the base ☐ ☐ ☐ ☐
T8: The student was observed completing the following tasks:
Materials, tools andequipment are stored in line with marking rubric and instructions and work area
is left cleanand free from hazards
☐ ☐ ☐ ☐

© Canberra Institute of Technology RTO Code 0101 Page 14 of 14Date created: 21/06/2022
Practical 1
Set up
Practical 2 Practical 3 Practical 4 Practical 5
Point/Peg
number
Change in ground
level between
points
Change inground
height from
datum
Ground to
water level
Change in
ground level
Differencegroundlevel
Datum 0 0 0 0 String to top
of wall
1
2 String to
bottom of
wall
3
4
Bottom
minus top
5
6

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