ASSIGNMENT
CQS101/AS1
A1.0
QS101 Residential Estimation
1
Assignment 1
Weighting: 25%
Learning outcomes
This assignment assesses the following learning outcomes:
•
LO1: Demonstrate knowledge of the cost estimation processes for a building
project by building up rates for labour and material supply for a specified building.
Instructions
•
Open a Word file on your computer to record your responses to the assignment
tasks. Clearly provide your build up for the rates in Task 2 in an Excel spreadsheet
•
Task 1: answer all the questions.
•
Task 2: select one case study to answer from the three supplied
•
Write the number of each part of the question you are answering
Create a header with your name, student number and assignment number, and
number your pages.
•
Submission
Submit your work through the online assessment submission link. Upload your assessment,
then use the Save and Submit assessment buttons. You will get an electronic receipt and
your work is then logged and tracked through our system. Assessments emailed directly to
lecturers will not be accepted. Save a copy for your own records.
Referencing and plagiarism
Refer to Referencing and avoiding plagiarism for information on APA referencing and
avoiding plagiarism.
CQS101/AS1
A1.0
Mark allocation
Task
Topic
Marks
1.
General concept of estimating
35
2.
Pricing SoQ for a residential tender
65
Total 100
Overview
CQS101/AS1
A1.0
This assignment will enable you to explain aspects of pricing a tender to a junior
estimator’s first tender for a house project. The project is based on a given scenario.
Before you begin
Read the fact sheets for Modules 1 and 2. The information you need for this
assignment is contained in the fact sheets and web links for these modules. Try the
job briefs to help you build up your knowledge and your writing skills. The more
assessment work you do, the more confident you will become.
The focus of the assignments are on your ability to show evidence of your
knowledge and understanding. The correct working out of mathematical formula
and the equations are secondary.
Task 1: General concept of estimating
You are an estimator in a construction company. You have a junior estimator
assisting you, Jeff, who has just joined the company. The company has been
informed that it will be invited to tender for a house project, tender information will be
available in a couple of weeks and tender documents will contain a schedule of
quantities (SoQ).
This will be the junior’s first tender, so you need to explain aspects of pricing a
tender to him. Jeff has prepared a list of questions for a meeting with you in the
morning and you are required to prepare answers for these.
Answer each question as fully as possible and expand on anything that is likely to
be confusing to a junior.
a) Explain what an SoQ is and the importance of preparing an estimate.
(10 marks)
b) What are the three methods available for sourcing rates for inclusion in an
SoQ? Explain each method.
(10 marks)
c) What are the three common types of estimates? Explain the differences
between them?
(15 marks)
[Task 1 Total: 35 marks]
3
© The Open Polytechnic of New Zealand Ltd
CQS101/AS1
A1.0
Task 2: Pricing Schedule of Quantities (SoQ for a residential
tender
Select ONE case study from the three supplied to answer Task 2.
Each case study contains a list of SoQ items in different trade sections of a building. You are
requested by your manager to calculate unit rates for each item in your chosen case study.
For each calculation provide a worksheet similar to that provided within Fact Sheet 2.4
(Integrated Example) and complete the following:
• Use a suitable labour constant to calculate labour rate.
• Use material costs and plant costs for each item using QV Costbuilder or any other
references you are familiar with to calculate material and plant rates.
• Remember, QVCB does not provide all material or plant costs. Where you need to, you
need to undertake your own research to ascertain these costs.
• Integrate the three major components to come up with reasonable unit rates.
• Include your calculations and references as an appendix to your answers.
• All rates are to two decimal places.
• Enter the unit rate into the case study (column called Rate).
Case study 1
Description
Unit
Qty
1900 mm x 400 mm x 250 mm deep concrete
footing
no
12
2500 x 450 mm x 450 mm deep concrete footing
m3
5
Vertical faces of footings, 0–250 mm high
m
19
Vertical faces of footings, 500 mm high
m2
23
D16 rod reinforcement
kg
87
D12 rod reinforcement
kg
96
D10 rod reinforcement
kg
17
Rate
Concrete
Formwork
Reinforcement
4
© The Open Polytechnic of New Zealand Ltd
CQS101/AS1
A1.0
Case study 2
Description
Unit
Qty
m2
93
m2
105
m3
11
m
35
Rate
Groundworks
Excavate over area of building and strip topsoil
to a depth of 100mm from existing ground levels
and stockpile on site approximately 10m away
from building
Filling and hardcore
150mm thick compacted approved hardfill
under floor slab, well consolidated, and as
per specifications
Concrete
30 MPa reinforced concrete in:
Floor slab laid on sand blinding, 0-100 mm thick:
105 m2
Formwork
Class F4 finish formwork to:
Free edges of floor slabs laid on blinding, 0-250
mm high
5
© The Open Polytechnic of New Zealand Ltd
CQS101/AS1
A1.0
Case study 3
Description
Unit
Qty
D16 rod reinforcement
kg
78
D10 rod reinforcement
kg
9
R6 stirrup reinforcement
kg
3
665 Mesh reinforcement lapped 150 at joints
m2
29
SE62 Mesh reinforcement lapped 200 at joints
m2
29
150 mm concrete blockwork in stretcher bond
bedded in mortar as described, rising to 600
mm high max
m2
25
Corner blocks
m
2
Rate
Reinforcement
Masonry
Exterior work
Footings
Concrete grout filling as described to 150 thick wall m2
25
Flooring
Carpet on and including underlay to concrete floor
m2
53
Transition strips to tile/carpet junction to concrete
floor: [3 no.]
m
5
[Task 2 Total: 65 marks]
6
© The Open Polytechnic of New Zealand Ltd
CQS101/AS1
A1.0
CQS101 Residential Estimation
Assignment 1 Marking Schedule
Criteria
Task 1a
Mark/100
0-2
10
Limited or incorrect
explanation
Task 1b
10
Task 1c
15
Total
35
3-4
Outlines an SoQ and/or the
importance preparing an
estimate. With many
errors.
5
Briefly explains an SoQ
and the importance
preparing an estimate.
With a few minor errors.
6-7
8 - 10
Clearly explains an SoQ and Fully explains an SoQ and
the importance preparing an the importance preparing
estimate.
an estimate.
0-2
No explanation
or wrong
3-4
Explains one or two
methods of sourcing rates.
With a few minor errors.
5
6-7
Briefly explains the three
Clearly explains the three
methods of sourcing rates. methods of sourcing rates.
With a few minor errors.
8 - 10
Fully explains the three
methods of sourcing rates.
0-2
Identifies the two or
less common types
of estimates.
3-7
Identifies the three
common types of
estimates.
7.5 - 9
Identifies the three
common types of
estimates.
10 - 11
Identifies the three
common types of
estimates.
12 - 15
Identifies the three
common types of
estimates.
Limited or incorrect
explanation of 1 to 3
types.
Explains the differences
between only 1 or 2 types.
Briefly explains the
differences between them.
Clearly explains the
differences between them.
Fully explains the
differences between
them.
CQS101/AS1
A1.0
Task 2
65
0 - 16
Calculation not
shown or partly
shown for 1 or 2 of:
• Labour
• Labour
• Labour
• Plants
• Plants
• Plants
• Plants
• Plants
• Material
• Material
• Material
• Material
Less than 25% build
up rate calculations
shown.
Calculations shown
has obvious errors.
Rounding not
attempted.
No reference material
Included.
Grand Total
100
52 - 65
Majority of calculations
shown for:
• Labour
Less than 25% build
up rates are correct.
65
44 - 51
Some calculations
shown for all 3 of:
• Labour
• Material
Total
17 - 32
32.5 - 43
Some calculations shown for Some calculations
1 or 2 of:
shown for all 3 of:
25% - 50% build up rates
are correct.
50% - 70% build up rates
are correct.
70% - 80% build up rates
are correct.
More than 80% build up
rates correct.
25% - 50% build up rate
calculations shown.
50% - 75% build up rate
calculations shown.
50% - 75% build up rate
calculations shown.
More than 75% build up
rates calculation show.
Some errors in calculations.
Minor errors in
calculations.
Minor errors in calculations.
One or two very minor
error/s in calculations.
Large errors in rounding.
No reference or some
reference material included.
A few errors in rounding.
Reference material
included.
A few errors in rounding.
Reference material
included.
Minor errors in rounding.
Reference material included