CPCCBC4004A Identify and Produce Estimated Costs for Building Construction Projects

This assessment is designed to test the student's ability to read and interpret plans and specifications, calculate labour costs, establish physical resource requirements, and develop estimated project costs. The assessment involves a scenario where the student is responsible for developing a cost estimate for the construction of a garage and workshop for David and Tara King. The assessment includes a Part A with 10 questions and a Part B where the student has to prepare a cost estimate based on the specifications provided.

in partnership with
CPC50210 Diploma of Building and
Construction (Building)
CPCCBC4004A Identify and produce estimated
costs for building construction projects
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Student name: XXXXXX
Student number: XXXXXX
Assessment: 32638/01

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Open Colleges
32638/01 CPCCBC4004A Identify and produce estimated costs for building construction projects
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Assessment submission
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Open Colleges
32638/01 CPCCBC4004A Identify and produce estimated costs for building construction projects
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Introduction
This assessment has been designed to allow you to provide partial evidence of
your competence in the unit CPCCBC4004A Identify and produce estimated costs
for building construction projects.
In completing your assessment, you will show evidence of your ability to:
 Read and interpret plans and specifications
 Identify and calculate labour costs
 Identify and establish physical resource requirements
 Develop estimated project costs.
Project
Read the scenario below that relates to the building of the King house
and carry out the tasks that follow.
Note:
Your previous assessments that involve the King house plans will assist
you with this project.
Scenario
Consider the plans for the David and Tara King’s house and imagine
that you are responsible for developing a cost estimate to include in a
tender for the Kings. For your quote, you will include a cost estimate
for the construction elements to the combined garage and workshop in
the template provided.
To develop your cost estimate you will need to:
- read and interpret the King plans including understanding the
measurements and the material quantities required
-calculate rates/costs of on-site personnel and labour hours
-identify physical resources, materials, consumables, plant and
equipment requirements
-estimate all project costs for inclusion in the cost estimate.
Part A.
Firstly, read and show you can correctly interpret the King House Site Plan below
and answer the following 10 questions:
Open Colleges
32638/01 CPCCBC4004A Identify and produce estimated costs for building construction projects
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What direction does the Front facade face? Eastern direction
Locate where the site fall (lowest point to highest point)
begins and ends?
The lowest point is
625.38mm while the
highest point is 627mm.
What is the FFL of the residence ground floor slab? 625.995mm
How long is the south boundary? 37.41m
What is the proposed height of the boundary fence? 1.8m High
Does this house orientation give the backyard the morning
sun or the afternoon sun?
The orientation gives the
backyard afternoon sun.
What is the FFL of the garage? 625.72mm
Are there any trees on this block? If so, where are they
located?
Yes there are trees on this
block. Trees are located on
the western, southern and
part of the eastern sides
next to the paling fence.
What is the driveway made of? Driveway is made of
concrete floor.
Where is the Meter Box located? The meter box is fixed on
the building wall next to the
masonry wall with the gate
to backyard access.
Part B.
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32638/01 CPCCBC4004A Identify and produce estimated costs for building construction projects
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Use the specification table below (Step 1) and the information
contained in the assessment, to prepare a cost estimate to be included
in a tender for the building of David and Tara King’s garage and
workshop (Step 2). Your cost estimate will be based on the relevant
sections of the Cordell Student Building Cost Guide Including the
calculations used to research your answers.
Your cost estimate will focus on the roofing (23° gable end pitch roof),
bulking, slab, reinforcement, concrete, timber frame, plasterboard and
door and window elements for the construction.
Your cost estimate will include unit costs and cost summaries of labour,
materials and project costs including the following:
i) the calculated labour costs for the site personnel, contractors and
non-contract elements for the construction elements listed
ii) the calculated material costs for the construction elements listed
covering the materials needed, quantities, supplier prices and any
plant or equipment requirements
iii) the costs of anticipated WorkCover, Environmental Protection
Agency and waste management site fee costs
iv) applied overhead and recovery margins.
Step 1
Read the specification table below for David and Tara Kings garage
and workshop to calculate all the items you need to include in your
cost estimate.
Specification table
Item Specification
Timber frame wall: 2400mm high 70mm x 45mm @ 450 centres
Door Tasmanian Oak veneer – solid door
Window 1 Lite Aluminium awning window
(domestic) 1200mm x 1200mm
Concrete in-situ 20mpa
Delivered/installed by chute
Reinforcement steel Trench mesh L8TM3
Square mesh SL72
Plasterboard - Wall Standard plasterboard 13mm–
Glued, nailed to timber; walls
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Plasterboard - Ceiling Standard plasterboard 10mm –
Glued, screwed to timber; ceilings
Roof tiles Cement square edge
Excavation Done by machine
Topsoil stock pile
Step 2
Using the cost estimate template below, refer to the relevant pages of
the Cordell Student Building Cost Guide to complete your cost estimate
for the Kings. Remember your cost estimate should be based on the
specifications itemised described in Step 1.
Cost estimate - David and Tara King
Excavation:
1/ Remove topsoil and set aside. (Top 100mm)
Garage Length (m) x Garage Width (m) = 19.5 x 3.28
Total Area x Unit rate = Subtotal cost
63.96 m2 x $2.56 = $163.74
2/ Detailed excavation for trench footings. (0.3m x 0.4m)
Centreline perimeter x Unit Rate = Subtotal
44.36m x $19.20 = $851.71
Excavation total = $1015.45
Concrete:
1/ Footing Beam 0.3m x 0.4m.
Area of Footing x Centreline perimeter = Footing beam Volume
0.12x 44.36= 5.32m3
Footing Volume x Unit Rate = Subtotal
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5.32 x 234.70 = $1249.36
2/ Slab on ground 10m x 6m.
Length x Width x Height = Volume
10 x 6 x 0.625995 = 37.56m3
Volume x Unit Rate = Subtotal
37.56 x 249.37 = $9366.33
Concrete total = $10615.69
Concrete reinforcement
1/ Reinforcement to Footings
Centreline perimeter x unit rate = Subtotal
44.36 x 2.36 = $105.26
2/ Reinforcement to Slab
Length x Width x Unit rate = Subtotal
10 x 6 x $3.86 = $231.6
Concrete reinforcement total =$336.86
Timber framing: (MGP10@ 450mm centres)
1/ Wall framing 2400mm high.
Centreline perimeter x unit rate = subtotal
45.47m x $ 6.89= $313.29
Timber framing total =$ 313.29
Roofing: (23 degree pitch)
1/ Roof area = Length x (Rafter Length x 2).
(Hint: Use Cosine Ratio)
Roof Area = 19.5x3.28cos23
Roof Area = 58.88m2
Roof area x unit rate = Subtotal
58.88 x 36.52= $2150
Roofing total =$2150
Window and Door Schedule
1/ Door
820mm x 2040mm x 35mm
Door total =$155.25
2/ Window Awning Aluminium
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1200mm x 1200mm
Window total =$255.38
Plasterboard
1/ Interior Walls
Perimeter x Height = Area
Area= (Int. Perimeter x Height) - (window + door)
45.2x 2.4 = 108.4891
Area = 108.48- 3.11
Area x unit rate = subtotal
105.37 x 18.31 = $1929.25
Plasterboard total
=$1929.25
Ceiling
Interior Area= Int. length x Int. width
19.38 x 3.16= 61.24m2
Area x Unit rate = subtotal
61.24x 19.99 = $1224
Ceiling total =$1224
Apply the costs of anticipated WorkCover, Environmental Protection Agency and
waste management site fee costs
WorkCo
ver total =$179.95
Applied overhead and recovery margins.
Sub total
=$18,175.12
Overheads
=$1000
Builders
Margin =$500
GST
= $1967.51
Total project costs Inc GST =$21,642.63
Items to submit as evidence for this assessment:
1. Part A. Completion of answers to 10 questions 
2. Part B. Completion of cost estimate for David and Tara King 
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