Leveling Assessment Guide

© Canberra Institute ofTechnology RTO Code 0101 Page1 of 12 Date created:8/08/2021
cit.edu.au Date updated: 27/05/2022
Assessment Practical/Observation
Student Name CIT Number
Competency Title, Code and
Banner Code
CRN
Carry OutLevelling Operations –CPCCOM3006
Assessment Type ☐ In the workplace ☒ Simulated environment ☐ Other
Assessment Date
Other Team Members
Student Statement: This assessment is myown work. Anyideas andcomments made byother people have been
acknowledged. I understandthat byemailing or submitting thisassessment electronically, I agree to thisstatement.
Student Signature Date
PRIVACY DISCLAIMER: CITis collecting your personalinformation for assessment purposes. Theinformation willonlybe used in
accordance withtheCITPrivacy Policy.
Assessor Feedback (also complete observation checklist and questions on last page)
 Student provided with feedback
Attempt 1 ☐ Satisfactory ☐ Not Yet Satisfactory Date / /
Attempt 2 ☐ Satisfactory ☐ Not Yet Satisfactory Date / /
Assessor Name Assessor Signature
Note to Assessor: Pleaserecordany reasonable adjustmentthat has occurred for this assessment.
Instructionsto Assessor
Work, Health and Safety: Awork health and safetycheck oftheassessmentenvironment is to beconductedprior totheassessment and
any hazards addressed appropriately.
List the assessment range and conditions, timeand materialson thenextpage
C
a
r
r
y
O
u
t
L
e
v
e
l
l
i
n
g
P
a
r
t
2

Information for Students: You have 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 will be required to re-enrol in this unit.
Only one re-assessment attempt will be granted for each assessment item.
Time Allowed: 8 hours
Materials provided by Assessor: All materials and tools required to complete the task will
be provided.
Materials and Equipment tobe supplied by the Student: Pencil, Pen, Personal protective
equipment PPE.
Assessment Range and Conditions: Assessment will be always conducted in simulated work
environment at CIT Bruce under teacher supervision. If at any stage the Assessor deems the
assessment to be unsafe it will be stopped. Access to all resources, manuals and standards
are permitted. All mobile phones are to be switched off.
Assessment Criteria: To achieve a Satisfactory result, your Assessor will be looking for your
ability to demonstrate the key skills/tasks/knowledge detailed in the Assessment Task to
industry standard.
The criteria that you will be assessed for this task are:
Planning and Processes Planned, organised task, and perform work following
accepted industry processes and standards.
Take responsibility for own
outputs in work and learning
Actively participated and engaged as an individual and/or
team member in all tasks and activities.
Specifications Job meets specification requirements, to industry standard
Time Management Task achieved within time and available information
requirements
Communication Written and oral communication met minimal job /task
requirements
WH&S Maintain a safe work environment and complied with WHS
regulations, supervisor instructions, and used appropriate
PPE for required tasks
Clean-Up Materials, tools and equipment are stored in line with
instruction. Area is left clean and free from hazards

Assessment Task Instructionsfor Students
You will be required to complete and submit photos of the following documents to
eLearn.
 3/ completed height of collimation booking sheets.
You will be required to complete the following tasks:
 Read and understand all aspect of this assessment including instructions, plans,
specifications and marking requirements and standards before commencing.
Complete a JSA (Job Safety Analysis) and Toolbox talk
 Task 1: Complete a “2 Peg test” for accuracy using booking table.
 Task 2: Calculate the height of building components from a datum using height of
collimation method.
 Task 3: Calculate the height of building components from a datum using inverted
height of collimation method.
 Task 4: Calculate and record the height of an existing slab and the depth excavation
for footings
 Task 5: Clean-up work site, and store materials and tools appropriately.
TASK 1: Check accuracy of optical level using “2 Peg test” method
As in part 1, you will check the accuracy of your optical level. You will measure two points,
move the optical level, and measure them again, comparing the results.
 Select a suitable test range for 2 points. It should be roughly the length of a building
site (30m-60m) and fairly flat. You can use flat ground, kerbs, or a tar sealed area.
If you are using a road, make sure a traffic control plan is in place.
 Mark 2 points on the ground with either wooden pegs or marking paint. Indicate
which point is backsight (BS) and which is foresight (FS).
 Set the optical level up according to manufacturer’s instructions about midway along
a straight line between the pegs.
 Place the staff at the BS (backsight) peg, take the reading of the staff through the
optical level and record it in the backsight column of your booking sheet.
 Repeat the process at the FS (foresight) peg and book it (Record in the booking sheet).
In the example table 1 below the BS is 1.425mm and the FS is 1.360mm.
 Subtract the BS from the FS to calculate the rise or fall. If the number is positive put it
in the rise column, if it is negative put it in the fall column
In the example subtracting the BS from the FS (1.425 - 1.360 = 0.065mm. ) will find the

difference in height.
Table 1. Example Booking sheetfor reading one
Backsight Intermediate Foresight Rise Fall Reduced
level
Remarks
READING ONE:
1.425 BS peg
1.360 0.065 FS peg
In this example the backsight is more mm than the foresight. This means the Backsight is
further away from the horizontal plane that the level uses to measure (known as the line of
collimation).
If it is further from the horizontal plane (line of collimation), the backsight is on lower ground
than the Foresight.
Because the foresight is rising uphill along the ground, the difference is recorded in the Rise
column.
 Now Move the instrument close to the BS peg (around 3 metres) on a straight line
with the FS peg.
 Take the new readings to the BS and FS pegs and correctly book the readings.
 If the optical level is calibrated properly, there will be a very slight (0-5mm), or no
difference at all between the two readings.
In the picture the angle ‘e’ is the same
for a correctly adjusted level.
You can adjust the line of sight so
that it is the same as the horizontal
plane.
The error in an unadjusted level is
known as the collimation error

Table 2. Example Booking sheet reading two
Backsight Intermediate Foresight Rise Fall Reduced
level
Remarks
READING ONE:
1.425 BS peg
1.360 0.065 FS peg
READING TWO:
1.453 BS peg
1.415 0.038 FS peg
Collimation Error = 0. 027
* Collimation error = the difference between the two readings
As you can see in table 2 the collimation error is 27mm (0.065 minus 0.038).
Sometimes the ‘Two Peg Test’ is faulty due to human error so repeat the test again if
you feel that this may be the case.
Some levels are adjustable so read the manuals instructions on how to do this where
others are not and need to be serviced.
Recordyour readings inthe booking table below.
Backsight Intermediate Foresight Rise Fall Reduced level Remarks
READING ONE:
BS PEG
FS PEG
READING TWO:
BS PEG
FS PEG
COLLMINATION ERROR =

Table for Optional Second Exercise:
Backsight Intermediate Foresight Rise Fall Reduced level Remarks
READING ONE:
BS PEG
FS PEG
READING TWO:
BS PEG
FS PEG
COLLMINATION ERROR =
TASK 2: Conduct levellingprocedures usingheight of collimation method 2
This task requires you to do the same procedure as task 3 but this time in a grid to simulate checking
the height of piers before installing a subfloor.
This is used to find the highest pier and how much you need to pack the lower piers.
This can be done on existing piers like the example near P-block or you may set out at least 10 points
in a rectangular configuration with around 1.2m between each point.

 This Photo shows the piers at “P” Block. Sketch your own plan view of your setup and
number each one.
 Confirm where the datum is with your assessor. All other heights should be worked out from
this point.
 Set up and calibrate your optical level so that it can measure as many points as possible
without moving it.
 Starting at the datum, work your way around the piers measuring the change in height from
the height of collimation. Record the measurements in your booking table and double check
which point you are measuring on your sketch.
 Minus the height of the instrument (height of collimation) from each measurement to
calculate each points height compared to the datum.
Remember that the smaller the number the taller the pier because it is closer to the height of
collimation.
 Check the accuracy of your records with the 3-check method.
Find the total of the foresight column minus the total of the backsight column.
This should be the same as the difference from the first and last reading in the
height of collimation column. It should also be the same as the change in RL.

TASK 3: Conduct levellingprocedures usingheight of collimation method 2
Now you will check the height of points above the height of collimation. This can be used to check
ceiling heights, deflection in beams or heights of posts.
 Using the same Datum, measure and record the height of a beam at each end to check it for
level.
If you are doing this off site, you can put a timber between two ladders to simulate a bottom
cord of a truss. In the example you will measure the rafter of the Lean-To attached to the
container.
 Invert the staff (turn it upside down) and measure the distance from the height of
collimation to the underside of the beam at one end. Record these measurements in your
booking sheet.
 Repeat this for the middle and end of the beam.
 To calculate the height of the beam above the datum, add the height of collimation to your
measurements. Don’t subtract themlike you did for the piers. This is because your
measurements are above the height of collimation.
TASK 4: Calculatingheights of slabs on ground and shootinglevels for
footings.
In this task you will be using an optical level to find the height of an existing slab. You are
going to use that height to work out how deep you need to dig some footings for an
extension to that slab.
Mid Point
Start Point Finish Point

This would be used to work out heights to dig footings and pour a new slab that needs to
marry into an existing one.
 Set up an area at the edge of an existing slab of concrete, about 3 meters wide. In this
example you will use one corner of the sandpit at P-Block.
 Set up the optical level correctly and take the height of the edge of the slab at either side
and centre of your run using the height of collimation method. Record this in your booking
table.
 Measure out 1m from the edge of the slab and mark a line parallel to the edge. This will be
the location of the thickened edge of a new slab that will marry into the existing slab.
 Take the height of the ground level at the same points as you did at the edge of the existing
3m
1m

slab.
 Using the detail below calculate how deep you must excavate at each point to allow for the
full depth of the thickened edge of the new slab. Write your answer in the note’s column of
your booking sheet.
TASK 7: Clean-up work site, materials and tools
 All tools and equipment to be cleaned, checked and returned to stores
 All excess materials to be stowed in racks
 Work site to be cleaned and free of hazards
400 mm

Carry Out Levelling - Observation Checklist Attempt 1 Attempt 2
S NYS S NYS
O1: 1. Student was able to interpret and apply relevant work instruction and complete
all documentation given.
☐ ☐ ☐ ☐
2. Student was able to read and interpret plans, site drawings and specifications. ☐ ☐ ☐ ☐
3. Student completed and agreed to followJSA and Toolbox talk. ☐ ☐ ☐ ☐
T1: Two peg test
4. Levelling tool set up in accordance with manufacturer’s instruction at mid-way
point
☐ ☐ ☐ ☐
5. Accurately recorded Backsight and foresight ☐ ☐ ☐ ☐
6. Relocated instrument and recorded new backsight and foresight ☐ ☐ ☐ ☐
7. Calculated and recorded Collimation error ☐ ☐ ☐ ☐
8. Optical level accuracy was determined ☐ ☐ ☐ ☐
T2: Height of collimation for piers task:
9. Levelling tool set up in accordance with manufacturer’s instruction ☐ ☐ ☐ ☐
10. Datum, backsight, intermediate points, change points and foresight were
recorded.
☐ ☐ ☐ ☐
11. Reduced levels for all stations were calculated and levels recorded accurately
(height of collimation method).
☐ ☐ ☐ ☐
12. Highest pier was identified and packing requirements for other piers was
calculated and recorded.
☐ ☐ ☐ ☐
T3: Height of collimation for ceiling members task:
13. Levelling tool set up in accordance with manufacturer’s instruction ☐ ☐ ☐ ☐
14. Inverted backsight, intermediate points, and foresight were recorded. ☐ ☐ ☐ ☐
15. Reduced levels for all stations were calculated and levels recorded accurately
(height of collimation method).
☐ ☐ ☐ ☐
T4: Calculate height of slab and depth of footings using height of collimation method.
16. Levelling tool set up in accordance with manufacturer’s instruction and checked
for accuracy
☐ ☐ ☐ ☐
17. Backsight, intermediate, and foresight of existing slab were recorded. ☐ ☐ ☐ ☐
18. Backsight, intermediate, and foresight of ground level were recorded at position
of footings.
☐ ☐ ☐ ☐
19. Depth of excavation for footings was calculated to meet existing slab level. ☐ ☐ ☐ ☐

T5: The student was observed completing the following tasks during cleanup:
20. Materials, tools and equipment are stored in line with marking rubric and
instructions and work area is left clean and free from hazards
☐ ☐ ☐ ☐

Leveling Assessment Guide

Recommended

Recommended

More Related Content

Similar to Leveling Assessment Guide

Similar to Leveling Assessment Guide (18)

More from Canberra Institute of technology

More from Canberra Institute of technology (20)

Recently uploaded

Recently uploaded (20)

Leveling Assessment Guide