This resource is copyright. Apart from any fair dealing for the purposes of private study, research, criticism or review as permitted under the Copyright Act 1968, no part may be reproduced by any process without written permission as expressed in the RTO Works License Agreement.
The information contained in this resource is, to the best of the project team’s and publisher’s knowledge true and correct. Every effort has been made to ensure its accuracy, but the project team and publisher do not accept responsibility for any loss, injury or damage arising from such information.
RTO Works has developed this content in partnership with Reubarquin Press and with the expert industry guidance of Buildsum.
While every effort has been made to achieve strict accuracy in this resource, the publisher would welcome notification of any errors and any suggestions for improvement. Readers are invited to write to us at email@example.com.
Building and Construction Works is a series of training and assessment resources developed for units of competency and qualifications within the Construction, Plumbing and Services Training Package.
Assesment Task 1: Practical task 7
Assesment Task 2: Practical task 13
This unit of competency specifies the skills and knowledge required to plan and perform calculations to determine material requirements for a construction project.
Completion of the general construction induction training program specified by the model Code of Practice for Construction Work is required for any person who is to carry out construction work. Achievement of CPCCWHS1001 Prepare to work safely in the construction industry meets this requirement.
Assessment for this unit comprises:
» Knowledge test
» Materials List.
A Materials List template, a Workings Sheet and an Assessor checklist are provided in this Workbook. Review these documents before you get started so you are clear on what you need to do. Speak to your trainer, assessor or workplace supervisor if you have questions.
In this task, you will answer a range of questions relating to calculations and processes required to complete material lists. This is an open book test that can be completed in the classroom or set as a homework activity.
You will need to answer all questions correctly.
For this task you must prepare a detailed Materials List for a house with at least six rooms, including a kitchen and bathroom.
Your assessor will provide you with access to a set of plans/drawings and specs for the house build. You will need to review these documents and associated Australian Standards, quality procedures, NCC requirements and manufacturer’s instructions, and create a Materials List. You will need to document required materials and calculate quantities for:
» wall framing
» wall linings
» roof framing
» sheets or units of roofing materials (as per the specs)
» building wrap
» linear external cladding
» sheets of external cladding
» flooring materials.
Using the Australian Standards, NCC and manufacturer’s instructions will give you details about specific information to help you work out quantities and make calculations based on quality requirements and specific layout requirements.
A Material List template has been provided for you to work with. Your assessor may also provide you with similar electronic version in a spreadsheet or document format.
You need to use the Materials List to calculate:
» area of lining materials
» total area of building wrap
» total area of external cladding
» total area of each type of roofing material
» any materials that are measured by volume
» the amount of wall framing materials
» the amount of roof framing materials
» the amount of flooring and lining material required (and dimensions of such)
» length of linear flooring
» length of linear lining material
» the amount of sheets of external cladding material required (and dimensions of such)
» length of linear external cladding material
» the amount of sheets of roofing cladding material required (and dimensions of such).
You will also need to evidence of your workings and any adjustments you make to ensure accuracy. A Workings Sheet can be found in this workbook. Your Workings Sheet must be submitted with your completed Material List.
You must correctly and accurately complete all requirements of the task to be marked as satisfactory.
Review the requirements of the assessment checklist so you are familiar with what your assessor is expecting you to do as part of this task.
Tips for completing this task successfully
» Double check (at least!) all your calculations.
» Don’t forget to review manufacturer’s instructions – there may be specific requirements that need to be followed, so you may need to apply extra calculations.
» Don’t forget to round up to nearest orderable quantities/lengths where applicable.
» Don’t forget to account for materials wastage (10%).
Answer each of the questions below. You need to answer all questions correctly to receive a satisfactory outcome for this task.
|1. Write down the formula used to calculate the volume of:|
|» A rectangular prism
The formula of rectangular prism volume: –
V = L*B*H
|» A sphere
The formula of sphere volume: –
V = 4/3 π r³
|» A triangular prism
The formula of triangular prism volume: –
V = ½ BHL
|» A trapezium
The formula of trapezium volume: –
Area of trapezium base= 1/2 *(A+B) * H * L
|» A cube
The formula of a cube volume: –
V = √3 × d3/9
|» A cylinder
The formula of cylinder volume: –
V = π r² h
|2. Write down the formula used to calculate the area of:|
|» A rectangle
The formula of a rectangle area: –
A = L * B
|» A square
The formula of a square area: –
A = SIDE * SIDE
|» A circle
The formula of a circle area: –
A = π r²
|» A triangle
The formula of a triangle area: –
A = ½ * BASE * HEIGHT
|» A trapezium
The formula of trapezium area: –
Area of trapezium base= 1/2 *(a+b) * h
|» A cube (surface area)
The formula of a cube area: –
A = 6a2
|» A cylinder (surface area)
The formula of a cylinder area: –
A = 2π r h + 2π r²
|3. Write down the method you use to convert millimeters to meters.
The method is M = MM value /1000
|4. Write down the method you use to convert meters to millimeters.
The method is MM = M value * 1000
|5. For each of the following, describe how it can be used for calculating and/or measuring materials. Also, write down at least one limitation/problem.|
A calculator is used for calculations such as addition, subtraction, multiplication, and division to calculate material prices, quantity, or measurements (Tan, et al., 2019). The limitation of a calculator is that it is not capable to calculate the mass value of large datasets.
|» Spreadsheet program
A spreadsheet program (MS Excel) is used for checking balance inventory, calculating costs, and estimating project materials (Gonzalez-Platas, et al., 2016). The limitation of spreadsheet programs is that they cannot be used by anyone because they require some level of computer proficiency.
|» ‘In the head’/’pen and paper method
The in-the-head or pen-and-paper is useful for quick and simple calculations and can be used to estimate material quantities. The limitation of this is that it is prone to human errors, especially when dealing with large numbers or complex calculations.
|» Estimating software
Estimating software can be used to calculate the cost of materials and labor for construction. The limitation of estimating software is that it is quite expensive compared to other tools.
|6. Explain the importance of reviewing the drawings, schedules, and specifications of a carpentry project in relation to performing a materials take-off.
It is quite important in terms of providing clear instructions, maintaining standards and quality, accuracy, helpful in project closure, and providing clear, concise, and rich information about the project.
|7. List one requirement from each of the following that you may need to consider when completing a materials take-off:|
NCC may require consideration of material quantity and project design.
|» Australian Standards
It may require consideration of relevant legislation and standards.
|» Work health and safety
It may require consideration of any risks to workers or the public during construction (Sánchez, et al., 2017).
|» Environmental requirements
It may require consideration of the environmental impact of materials and ensuring compliance with relevant regulations.
|» Manufacturer’s specifications
It may require consideration of materials selected that are compatible with the manufacturer’s installation.
|» Workplace requirements
It may require consideration of workplace policies and procedures, such as using approved suppliers and purchasing methods.
|Assessment outcome – CPCCOM3001 Perform construction calculations to determine carpentry material requirements: Knowledge test||¨ Satisfactory||¨ Not satisfactory|
Gonzalez-Platas, J., Alvaro, M., Nestola, F., & Angel, R. (2016). EosFit7-GUI: a new graphical user interface for equation of state calculations, analyses and teaching. Journal of Applied Crystallography, 49(4), 1377-1382. http://www.rossangel.com/Download/2016_GonzalezPlatas_etal_EosFitGUI.pdf
Sánchez, F. A. S., Peláez, G. I. C., & Alís, J. C. (2017). Occupational safety and health in construction: a review of applications and trends. Industrial health, 55(3), 210-218. https://www.jstage.jst.go.jp/article/indhealth/55/3/55_2016-0108/_pdf
Tan, S. L., Jotani, M. M., & Tiekink, E. R. (2019). Utilizing Hirshfeld surface calculations, non-covalent interaction (NCI) plots and the calculation of interaction energies in the analysis of molecular packing. Acta Crystallographica Section E: Crystallographic Communications, 75(3), 308-318. https://journals.iucr.org/e/issues/2019/03/00/hb7798/hb7798.pdf
Using the plans/drawings and specs provided by your assessor, fill out this Materials List. Use the Workings Sheet to record all your calculations.
You can set your list out in whatever order suits you – you may like to order your list by material type or by room, just make sure you have included all required materials.
Allow for a nominated waste factor (10%).
Write down all the calculations you use. Double check all your calculations. Use pen (so your assessor can see any changes you make).
Assessor checklist – CPCCCO2013 Carry out concreting to simple forms
|Did the student||Satisfactory||Not satisfactory||Comment||Initials|
|Use drawings and specs to confirm the dimensions of all carpentry materials?|
|Correctly calculate dimensions and quantity of flooring sheets?|
|Choose most economical layout of linear floor materials?|
|Correctly calculate length of linear flooring materials dimensions and quantities?|
|Correctly calculate dimensions and quantity of wall framing materials required?|
|Correctly apply area calculation to determine quantities of all wall linings?|
|Correctly calculate dimensions and quantity of wall lining sheets?|
|Correctly apply area calculation to determine total area of building wrap required?|
|Choose most economical layout of external wall cladding (sheets)?|
|Correctly calculate quantities and dimensions of sheets of external cladding?|
|Choose most economical layout of external wall cladding (linear length)?|
|Correctly calculate length and quantities of linear external cladding dimensions and quantities (including overlap)?|
|Correctly apply area calculation to determine quantities of each type of roofing material?|
|Choose most economical layout of roof sheeting materials (linear length)?|
|Correctly calculate dimensions and quantity of roofing sheeting materials required (including overlap)?|
|Correctly calculate dimensions and quantity of all types of roof framing materials required?|
|Apply correct calculations to determine volume of specific material quantities?|
|Review all calculations?|
|Record the results of all calculations made?|
|Assessment outcome – CPCCOM3001 Perform construction calculations to determine carpentry material requirements: Materials List (inc Workings Sheet)||¨ Satisfactory||¨ Not satisfactory|