LEARNER GUIDE
CPCCOM3001
Perform construction calculations to
determine carpentry material requirements
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  1
Version Control
Unit code  Document version  Release date  Comments/actions 
CPCCOM3001  1.0  31.07.2021  First edition 
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  2
Table of Contents
Table of Contents ……………………………………………………………………………………. 2
Introduction …………………………………………………………………………………………… 3
CHAPTER 1: PLAN AND PREPARE ……………………………………………………………….. 5
1.1 Review drawings, specifications and workplace requirements for a construction
project …………………………………………………………………………………………… 7
1.2 Plan all work to comply with laws and regulations, the National Construction Code
(NCC), Australian Standards, work health and safety (WHS) and environmental
requirements, manufacturers’ specifications, workplace requirements, drawings and
specifications. ………………………………………………………………………………….11
CHAPTER 2: CALCULATE AREA AND VOLUME OF CONSTRUCTION MATERIALS FOR
THE PROJECT………………………………………………………………………………………… 20
2.1 Review drawings and specifications to determine dimensions of each type of
construction material for the project. ……………………………………………………..22
2.2 Calculate the area of each type of lining material……………………………………….25
2.3 Calculate the total area of the building wrap and of each type of external cladding
material. ………………………………………………………………………………………..28
2.4 Calculate the total area of each type of roofing material. ……………………………..32
2.5 Calculate the quantity of materials that are measured by volume. ………………….33
CHAPTER 3: CALCULATE THE REQUIREMENTS FOR CONSTRUCTION FOR THE
PROJECT………………………………………………………………………………………………. 37
3.1 Calculate the quantity of wall and roof framing materials……………………………..39
3.2 Calculate the dimensions and quantity of sheets of each type of flooring and lining
material, ensuring that the most economical layout is employed…………………….44
3.3 Calculate the length of linear flooring and lining material, ensuring that the most
economical layout is employed. …………………………………………………………….45
3.4 Calculate the dimensions and quantity of sheets of external cladding material,
ensuring that the most economical layout is employed. ……………………………….47
3.5 Calculate the length of linear external cladding material, ensuring that the most
economical layout is employed. …………………………………………………………….48
3.6 Calculate the dimensions and quantity of sheets or units of roofing material,
ensuring that the most economical layout is employed and allowing for overlaps. .49
CHAPTER 4: CHECK AND RECORD RESULTS ……………………………………………….. 52
4.1 Record workings and review calculations for accuracy …………………………………54
4.2 Record results of calculations as required for costing and ordering materials ……..56
References …………………………………………………………………………………………… 58
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  3
Introduction
This guide walks you through the steps for calculations to determine carpentry material
requirements for a standard home building project.
Carpentry: – Carpentry is a skilled trade that involves the cutting, shaping, and installation
of building materials during the construction of structures such as buildings, ships, timber
bridges, and concrete formwork. Carpenters used to work with raw wood and conducted
tougher labour like framing, but nowadays, a variety of alternative materials are used.
Carpenters used to work with natural wood called lumber or timber that had been prepared
by splitting (riving), hewing, or sawing with a pit saw or sawmill.
Following are some carpentry construction materials: –
• Wood and timber
• Sheet materials
• Prefabricated structures
• Sizes of carpentry materials
• Bricks
• Cement
• Sand and aggregates
• Scaffolding.
Units of measurement that are correct:
In the construction sector, linear measurements are given in millimetres (mm) and metres
(m). The measurements of houses and buildings are usually represented in millimetres on
working drawings, while some long dimensions onsite plans may be in metres. Millimetres
and metres are used to designate measuring tools used in the construction of dwellings and
buildings.
It’s crucial to measure accurately using the right instrument. On the job, tradespeople
typically communicate in millimetres or metres and millimetres.
On the job, most tradespeople have two measuring tools. The retractable metal tape and
the fourfold rule are two examples. You must be able to accurately utilise these measuring
tools.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  4
A tradesperson, for example, might take a measurement of 5432 mm. The tradesperson
could say ‘five thousand four hundred and thirtytwo millimetres’ or ‘five metres four
hundred and thirtytwo millimetres.’
The units of measurement used in the construction sector are metric units derived from
the International System of Units (SI). The SI units that are often used in building, along
with an example of how they are employed, are listed below:
What will I learn?
This learning guide will provide you the skills and knowledge required to:
1. Plan and prepare
2. Calculate area and volume of construction materials for the project.
3. Calculate the requirements for construction for the project.
4. Check and record results.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  5
CHAPTER 1: PLAN AND PREPARE
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  6
General
Before Perform construction calculations to determine carpentry material requirements, it is
important to plan and prepare properly.
What will I learn?
In this chapter, you will learn about the following:
1. Review drawings, specifications and workplace requirements for a
construction project
2. Plan all work to comply with laws and regulations, the National
Construction Code (NCC), Australian Standards, work health and safety
(WHS) and environmental requirements, manufacturers’ specifications,
workplace requirements, drawings and specifications
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  7
1.1Review drawings, specifications and workplace
requirements for a construction project
Construction drawings serve as a blueprint for the construction of a structure. There isn’t a
standard list of drawings that can be utilised on the construction site. Drawings are
developed and provided onsite, depending on the type of construction and building.
On any building site, drawings are vital papers. No work may be done onsite without a
complete sketch of the various building components. Construction comes in a variety of
forms. In construction, drawings serve as a reference for the site engineer in charge,
providing precise information such as the size, measurements, material, and position of a
structural component.
Following are the construction drawings used in any project: –
1. Site Layout Plan
2. Floor Plan
3. Sectional Drawing
4. Structural Drawings
5. Working Drawings
6. Foundation Plan
7. Column Layout Drawings
8. Plinth Beam Layout Drawings
9. Flooring Details Drawings
10.Doors & Windows Frame Details
11.Sill and Lintel Level Drawings
12.Column, Beam and Slab Reinforcement Details
13.Staircase Layout and Reinforcement Details
14.Plumbing Layout Drawings
15.Electrical Layout Drawings
16.Finishing Drawings
Some of the construction drawings are explained below.
1. Site Layout Plan: A site plan is a largerscaled drawing or layout of the construction
site for a planned structure. It contains every existing structure’s detail, as well as
its size and shape. A site plan, also known as a site layout plan, is a diagram that
depicts the layout of various site components.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  8
2. Floor Plan: One of the most significant forms of building drawings is the floor plan.
The floor plan is a twodimensional drawing that depicts the location and dimensions
of various room components. The placement and position of the drawingroom, living
room, kitchen, bedroom, staircase, bath, WC, and other rooms were all included.
3. Sectional Drawing: The same line elevation of the building is used in the section
drawing, but it is sliced in a vertical plan inside the building plan. Furthermore, when
chopped vertically inside the building, it represents the building details. A sectional
shape or depiction of an apple, for example, is the interior shape of an apple when
cut into two sections.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  9
4. Structural Drawings: One of the most important forms of construction drawings
is a structural drawing, which is a blueprint or collection of plans for how a building
or other structure will be constructed. It is usually developed by licenced structural
engineers using architectural plans as a guide.
5. Column Layout Plan or Drawings: The column layout plan is a blueprint that
specifies the size, shape, and location of each column, as well as its dimensions. A
column layout plan is a necessary blueprint or plan for any building construction.
Without one, the first structure cannot be built. The column with their identifying
numbers, such as C1 or C2, is shown in this plan. This layout plan aids site engineers
in locating and building columns on the job site.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  10
6. Flooring Details Drawings: In the construction of a building, the flooring plan
shows the dimensions, thickness, materials, and types of flooring that will be utilised.
It also displays the specifics of the flooring base material.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  11
1.2Plan all work to comply with laws and regulations, the
National Construction Code (NCC), Australian
Standards, work health and safety (WHS) and
environmental requirements, manufacturers’
specifications, workplace requirements, drawings and
specifications.
Before initiating the calculation of costs of construction work, you need to make sure that
you have accessed, interpreted and applied all documentation for the job. This will help you
do your work safely and make sure all work is compliant.
The most important point of consideration is that the bricklaying and block laying material
must be handled and prepared in accordance with the requirements of relevant legislation,
Australian Standards, and Codes of Practice.
Compliance documentation
Compliance documentation is essential to all aspects of operations on every worksite. From
work instructions through to quality and environmental requirements, documentation sets
out the type of work, the timeframe for construction and the procedures of the completion
of the task.
Statements containing the words “must”, “shall”, or “will” are often used within these
documents to indicate that there are mandatory (legally must be applied) requirements.
Each project site will have different compliance documentation that must be referred to.
These documents require that the tasks be undertaken so that it meets the required
standards.
It is significant to know your obligations under the compliance documents such as:
Worksites are required to meet a range of compliance documents. These include:
Acts: These are laws that you have to follow.
Regulations: These explain what the law means
Codes of Practice: These are instructions on how to
follow the law, based on industry standards.
Australian Standards: These tell you what the minimum
requirement is for a job, product or hazard.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  12
Each state uses different OHS/WHS legislation. They all have the same requirements. In
case of any questions regarding the safety rules, you must contact your Supervisor.
Features of working drawing and specifications
Working drawings contain dimensioned, graphical information that a contractor can utilise
to construct the works or suppliers to fabricate, assemble, and install instalments.
Architectural drawings, structural drawings, civil drawings, mechanical drawings, electrical
drawings, and so on are examples of these types of drawings.
Working drawings, such as plans, sections, and elevations, are twodimensional orthogonal
projections of the building or component they are describing.
Types of Building Plan Drawings
Different types of drawings are given by an architect based on the detailing and complexity
of a project to understand and smooth the operation of the construction process.
1. Site Plan
A site plan is a detailed design of a building or apartment that depicts the entire layout of
the structure. It depicts the site’s boundaries and access points, and surrounding structures
that are significant to the design. The site plan for a construction project must also indicate
all utility connections, such as drainage and sewer lines, water supply, electrical and
communications cables, and external lighting.
2. Floor Plan
A plan is a topdown view of a structure or thing. The most basic architectural diagram is a
floor plan, which is a perspective from above that shows the layout of spaces in a building
in the same way as a map does, but at a specific building level. A vertical orthographic
Legislative, organisational and site requirements
Licensing requirements
Equal employee opprotunity legislations
Australian standards
Code of practice
Safe Work Method Statements (SWMS)
Job safety Analysis (JSA)
Operational manuals
Material Safety Data Sheets (MSDS)
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  13
projection of an object onto a horizontal plane cutting across the building is referred to as a
floor plan view.
3. Cross Section
A crosssection is a geometric projection of a building’s horizontal orthographic projection
onto a vertical plane cutting across the building. A crosssection is a vertical cut section of
a building that reveals the dimensions and thickness of any structure component. It also
depicts a structure’s sill height, lintel height, floor height, and other minor features.
4. Elevation
An elevation drawing is a projection drawing that illustrates one side of the house in
orthographic projection. The purpose of an elevation drawing is to depict the finished aspect
of a particular side of the house as well as provide vertical height information.
Other compliance documents include:
Before starting your work, ensure that you have access to all the operations documents for
the job. This will help you do your work safely and make sure all work is compliant. The
operations documents include:
• Work Method Statement
• Safety Data Sheets (SDS)
• Project Quality requirements
Work method statement: A Safe Work Method Statement (SWMS) is a document that defines
the highrisk construction work activities to be performed at a workplace, the hazards that
may develop as a result of these activities, and the riskcontrol measures to be implemented.
SWMS are required for highrisk construction work activities, as defined in the WHS
Regulations. For works carried out regularly, a generic SWMS may be prepared and used for
those work activities. The content of the SWMS can be refined over time and include
consultation with workers and other persons conducting a business or undertaking.
Work method statements must be completed before initiating the work. The work methods
statements provide details on the steps to complete the job. These include details of any
hazards you might face while completing the job and the safety measures to control these
hazards.
These statements can also be known as:
• Safe Work Method Statement (SWMS)
• Job Safety Analysis (JSA)
• Job Hazard Analysis (JHA)
• Safe Operating Procedure (SOP)
These statements are also used to organise work activities and ensuring that everything is
completed based on the job requirements. You must ensure that you have these required
documents available before initiating the task.
Safety data sheet: The schedule for the amount of work to be carried out varies depending
on location.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  14
A Safety Data Sheet (SDS) is a document that contains health and safety information on
hazardous substances or dangerous goods products, compounds, or chemicals. If you
acquire one of these items, it should come with a safety data sheet (SDS).
SDSs tell you
• the product (its name, contents, and qualities), who made or imported it, and how it
may influence your health, how to keep it safe and how to use it
• who made or imported it;
• who made or imported it; how the product can influence your health;
• and how to securely use and store it
Health and safety
A person conducting a business or undertaking must manage risks associated with any highrisk construction work.
Safe Work Method Statement (SWMS) must be prepared for highrisk construction works.
Further guidance on the duties related to highrisk construction work and SWMS is available
in the Code of Practice: Construction Work.
Building code of Australia
The Australian Building Codes Board (ABCB) creates and maintains the Building Code of
Australia (BCA) on behalf of the Commonwealth Government and each State and Territory
Government. The BCA is an Australianwide set of technical requirements for the design and
construction of buildings and other structures. It accounts for changes in climate as well as
geological and geographic variables. The NCC is divided into two volumes, which are:
The goals of the BCA is to enable the achievement and maintenance of acceptable standards
of structural sufficiency, safety (including safety from fire), health and amenity for the
benefit of the community in the present and in the future.
National Construction Code (NCC) requirements
The National Construction Code (NCC) provides the minimum necessary requirements
applicable to new buildings throughout Australia.
Performance requirements under the NCC must be satisfied through either:
Volume One pertains primarily to Class 2 to 9 buildings
Volume Two pertains primarily to Class 1 and 10
buildings (houses, sheds, carports, etc.)
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  15
• Performance Solutions;
• DeemedToSatisfy (DTS) Solutions; or
• A combination of the two.
There are numerous ways to achieve compliance. The most typical conservative ways of
achieving DTS solutions are by following:
• Acceptable Construction Practices; or
• Australian Standards referenced within the NCC.
Designers can choose to follow Australian Standards as Performance Solutions over DTS
solutions. However, this compliance process may require expert judgment and additional
verification.
Job Safety and Environmental Analysis (JSEA)
A Job Safety and Environmental Analysis (JSEA) is a written document that outlines the
highrisk work activities that will be performed at a workplace and the hazards and risks
that these activities will entail, and the controls that will be implemented to mitigate the
risks. A JSEA takes into account both environmental and health risks. Its main goal is to
assist supervisors and workers in putting in place and monitoring the control measures in
place at work to guarantee that highrisk work is done safely.
When performing a Job Safety and Environmental Analysis (JSEA) or a Safe Work Method
Statement (SWMS), it is critical to consider environmental hazards and controls. The
maximum punishment for breaking the WHS act in Australia is $600,000 or five years in
prison or both. For causing substantial environmental harm, the penalty is $2,000,000 or
15 years in prison or both.
Some of the common environmental hazards include:
• Blocking creeks or waterways
• Release of Emissions to air
• Inefficient resource use – wasting water
• Fire
• Disposal of Transport of Wastes from site
• Fire from engine exhaust
• Damage to property
• Disturb Cultural Heritage Sites
• Dust
• Inefficient electricity use/ Production of greenhouse Gas
• Noise/ disturbing the peace
• Spills to water – stormwater
• Spills to land contamination
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  16
• Spillage
• Waste Generation
• False alarm
• Spreading of Weeds and pests
• Inefficient resource use
• Swarf causing damage to property
• Noise/ vibrations (offsite Impacts)
• Disturbance to Plants or animals – removal of vegetation
• Use of pesticides/ Insecticides
Environmental requirements
The bricklaying and block laying material has put an impact on the environment at a certain
degree. Therefore following points must be considered while working on a construction site:
• Water quality
• Air levels
• Waste management
• Hazardous chemicals
• Lighting.
Table: Environmental requirements
Element  Description 
Water Quality  Waterways should be free from pollution. As a construction worker, it is your responsibility to ensure that any material residue should not enter waterways. 
Air Quality  Air quality is ensured by dust control and management. During windy days, water sprays must be used to prevent dust from rising. 
Noise Levels  Noise should be maintained to the optimum level. This is considered important during night operations, especially in residential sectors. 
Waste Management  Waste management is an important factor in maintaining a clean and safe environment. Waste problems can be reduced by acting on the following priorities: • Avoidance • recycling 
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  17
• reuse • Disposal. 

Hazardous Chemicals  A construction worker must know about the storage, use and disposal of hazardous chemicals. You should seek advice from your Supervisor. 
Lighting  The lighting of construction sites close to residential areas can cause serious environmental concerns. Whenever possible, all lighting should be fixed away from populated areas. 
Environmental management plans
Environmental management plans mainly describe the action that affects the natural
environment in which it occurs and set out clear commitments from an individual to follow
environmentally friendly practices.
Basically, the environmental management plan (EMP) will direct the actions to dispose of
recycled material at the construction site.
The following diagram shows the primary purpose of working on an environmental
management plan (EMP). You should take advice from your Supervisor or manager if any
unaccepted issues occur in the system. It is the responsibility of everyone working on the
site to improve environmental methods and procedures in the workplace.
Dispose / Recycle Material
As waste has a huge number of negative impacts on the environment, therefore, recycling
materials, in this case, is a crucial one. Following are some benefits of recycling waste
material:
• Recycling saves energy
• Recycling decreases landfills
Meet all
relavant
environmentala
laws, policies
and
procedures.
Improve
environmental
management
system on
continuous
basis as per
international
standards
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  18
• Recycling protects natural resources
• Recycling is good for the economy
• Recycling assists our climate problems
Worksite disposal areas
The workplace plan should be familiar to the workers. This
assists them to find out the location of areas where the
material is to be disposed of. The signs at the workplace
must be followed, as they will direct you to different
points. The workplace strategies must be followed while
disposing of any material.
Wastewater Disposal
Although the wastewater is classified as nontoxic waste, this can harm the environment.
Care should be needed to dispose of the wastewater. If the wastewater is not properly
disposed of, it will seriously affect the environment, which further causes pollution.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  19
Selfcheck assessment
QUESTION 1
What are the different types of drawing/plans used in calculation .
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 2
What are environmental management plan.
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 3
This is dummy texts need to be replaced with the real content.
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  20
CHAPTER 2: CALCULATE AREA AND
VOLUME OF CONSTRUCTION MATERIALS
FOR THE PROJECT
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  21
This chapter includes information regarding calculating the area and volume of construction
materials for the project.
What will I learn?
In this chapter, you will learn about the following:
1. Review drawings and specifications to determine dimensions of each
type of construction material for the project.
2. Calculate the area of each type of lining material.
3. Calculate the total area of the building wrap and of each type of
external cladding material.
4. Calculate the total area of each type of roofing material.
5. Calculate the quantity of materials that are measured by volume.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  22
2.1Review drawings and specifications to determine
dimensions of each type of construction material for
the project.
The majority of the information required by workers conducting any activity related to a
construction project comes from project documentation in the construction sector. As a
result, being able to read and comprehend plans, drawings, details, and requirements
correctly is critical. Plans and drawings are used by the designer and builder to transmit
large volumes of technical information.
This technical information must be delivered without misconceptions, which can only happen
if everyone who utilises plans and drawings understands the technical language. As a result,
technical language employs defined layouts, symbols, and abbreviations to ensure that
everything appears the same in any plan or design. You will learn and understand this
language via study, practice, and experience.
Types of plans and drawings: –
There are numerous types of plans and drawings that can be generated for a construction
project. Which ones are required will be determined by the project’s size and complexity.
Typically, the bare minimum includes:
• a site plan
• a floor plan
• elevations
• sections.
Others that may be required, depending on the project, include:
• details
• electrical plans
• hydraulic plans
• engineering plans.
Measurements: –
Plans and drawings depict objects that will be built, such as foundations, walls, and fences.
They also indicate what is already on the land or nearby, such as trees, amenities, and
neighbouring buildings.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  23
Plans and drawings, in addition to these tangible goods (things we can see or touch), indicate
a wealth of other crucial information, such as levels, gradients, heights, and measures.
Units of measurements: –
In Australia the metric system is used. When reading, measuring, or calculating amounts
for building projects in Australia, always use the metric system.
Millimetres are the most often used unit of measurement in the construction sector (mm).
Millimetres are commonly used to measure lengths, widths, depths, and heights. When
bigger dimensions, such as the length of borders on a site plan, are indicated, metres (m)
will be used. Centimetres are almost seldom used.
Often the unit itself is not written. For example, everyone just knows that if 3600 is written,
it means millimetres, whereas if 3.600 is written, it means metres.
Linear measurements: –
Linear measurements are distances or lines measured between two places. They are the
most frequent sort of measurement used in the building business, especially on drawings.
The following are examples of common linear measurements:
• length
• width
• depth
• height
Conversion of meter to a millimetre or vice versa: –
For converting the measurements in meter to the millimetre, multiply the values by 1000
as 1 meter = 1000 millimetre.
For example
5 Meter to a millimetre
5 X 1000 = 5000 millimetre.
For converting the measurements in millimetres to metre, divide the values by 1000 as 1
millimetre = 0.001 metre
For example
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  24
5000 millimetres to a metre
5000/1000 = 5 metre.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  25
2.2Calculate the area of each type of lining material.
Calculate the area of each type of lining material:
A variety of elements must be taken into account while estimating surface lining: –
• The overall size of the surface.
• Surface holes that have been specified.
• The type of lining (sheet or board) * The placement direction.
• A welldesigned cover.
• Sheet lining size
When estimating the quantities for sheet lining (i.e., the number of sheets), divide the
surface area by the area of each individual sheet to get an estimated number.
Consider the following scenario:
SPECIFICATION: 4 mm Blackwood Ply vertically lined wall (2400mm x 1200 mm)
Consider two cases: –
• One without opening
• One with opening
WITHOUT OPENING: –
Step 1: – Calculate the area of the wall
Since the shape of the wall is rectangular so the are area of the rectangle is Length (L) x
Breadth (B).
Length of the wall= 5400 mm = 5.4 m
Breadth of the wall = 3000mm = 3 m
Area = L x B = 5.4 x 3 = 16.2 m2
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  26
Step 2: Calculate the area of the sheet
As per the specifications, the length of the sheet is 2400 mm, and the breadth of the sheet
is 1200mm.
Since the shape of the sheet is rectangular area = Length x breadth
Length = 2400 mm = 2.4 m
Breadth = 1200 mm = 1.2 m
Area of 1 sheet = 2.4 x 1.2 = 2.88 m2
WITH OPENING: –
Step 1: Calculate the area of the wall
Since the shape of the wall is rectangular so the are area of the rectangle is Length (L) x
Breadth (B).
Length of the wall= 5400 mm = 5.4 m
Breadth of the wall = 3000mm = 3 m
Area = L x B = 5.4 x 3 = 16.2 m2
Step 2: – Calculate the area of the opening: –
Since the opening is in a rectangular shape so the area will be calculated by multiplying
length to breath.
Length of the opening = 2100 mm = 2.1 m
Breadth of the opening = 900 mm = 0.9 m
Area= 2.1 x 0.9 = 1.89 m2
Step 3: – Calculate the net area of the wall
Net area of the wall = Whole area of the wall – Area of the opening
Net area = 16.2 – 1.89 = 14.31 m2
Similarly, we can find the area for other shapes of walls and other shapes of sheets by using
their shape specific formula. Following are area formulas for different shapes: –
S. No.  Shape  Area (m2) 
1  Rectangle  Length(L) X Width (B) 
2  square  (Side)2 
3  circle  Πr2 
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  27
4  triangle  1/2 (Base (b) X Altitude (a)) 
5  trapezium  (1/2)(a + b)h a and b are parallel sides and h is height between parallel sides 
6  cube  6 a2 where a= side 
7  cylinder  2πrh+2πr2 Where r= radius of top and bottom circle H is height 
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  28
2.3 Calculate the total area of the building wrap and of
each type of external cladding material.
Types Of Cladding Materials:
Wood Cladding: Because of its insulating characteristics, this type of cladding not only
protects the building but also saves energy. Real wood’s wonderful impact may be blended
with any type of interior or exterior, improving the building’s appeal.
Stone Cladding: Stone cladding provides the walls with a more natural appearance while
also providing a touch of elegance. To minimise weight, stones are mined and sliced into
tiny pieces. These are then painted on the buildings, giving them an earthy, rustic
appearance.
Ceramic Cladding: Ceramic cladding is lightweight and requires minimal upkeep. It comes in
a variety of textures and patterns, making it a favourite option among architects. The
material is longlasting, simple to clean, and resistant to the elements.
Timber Cladding: These softwoods are roasted to high temperatures, which remove moisture
and create a longlasting substance. It may easily be painted and changed to fit the
structural design.
These cladding materials come in different shapes and sizes.
Building wrap: – A weather resistant barrier (sometimes referred to as a WRB, building
wrap, or house wrap) protects the building envelope against bulk water, winddriven rain,
and water vapour.
Following are steps to calculate the total area of building wrap: –
Since building wrap is installed on the exterior of the building, so we need to consider the
exterior walls of the building.
Name the wall by giving different abbreviations such as Wall 1, Wall 2, Wall 3, Wall 4……. Or
Wall A, Wall B, C, D, ……. etc
Step 1: – Calculate the area of each wall.
For e.g. Area of wall 1 = Length x Breadth
Step 2: – Subtract the opening if any present for the respective walls.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  29
Step 3: – Calculate the area of one cladding material.
For example: –
If ceramic tile is to be used, calculate the area of one tile.
Step 4: – Calculate the no of material required: –
Divide the total area of one wall by the area of one tile.
No. of tiles: – Total area of one wall / Area of tile
Similarly, the number of cladding material requirements can be calculated for other walls.
For example: –
Considering both the cases: –
• With opening
• Without opening
Dimension of one tile: –
Without opening
Step 1: – Calculate the area of each wall.
Area of wall 1 = Length x Breadth
Area of wall 1 = 5.4 m x 3 m = 16.2 m2
Since there is no opening, so net area or the total area will be 16.3 m2.
Step 2: – Calculate the area of one cladding material.
Area of 1 tile = 0.3 m x 0.3 m = 0.09 m2
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  30
With opening: –
Step 1: – Calculate the area of each wall.
Area of wall 1 = Length x Breadth
Area of wall 1 = 5.4 m x 3 m = 16.2 m2
Step 2: – Subtract the opening if any present for the respective walls.
Opening area= 2.1 m x 0.9 m = 1.89 m2
Total area= 16.2 – 1.89= 14.31 m2
Step 3: – Calculate the area of one cladding material.
Area of 1 tile = 0.3 m x 0.3 m = 0.09 m2
Similarly for different shapes of cladding material and different wall shapes can be calculated
by using shape specific formulas.
S. No.  Shape  Area (m2) 
1  Rectangle  Length(L) X Width (B) 
2  square  (Side)2 
3  circle  Πr2 
4  triangle  1/2 (Base (b) X Altitude (a)) 
5  trapezium  (1/2)(a + b)h a and b are parallel sides, and h is the height between parallel sides 
6  cube  6 a2 where a= side 
7  cylinder  2πrh+2πr2 Where r= radius of top and bottom circle H is height 
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  31
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  32
2.4Calculate the total area of each type of roofing
material.
Understanding how to estimate roofing materials is crucial. It will not only help to prevent
waste, but it will also ensure that you only buy what you need for the roofing project. To
establish the number of materials you’ll need, you’ll need to calculate your roof area or the
overall size of your roof.
1. Find the square footage of the roof
Measure the length and width of each roof plane, then multiply the length by the width of
each plane to get the total square footage. If your roof is a simple gable, all you need to do
is measure and add the two planes. Don’t forget to account for the area of any extra roof
sections if your roof has dormers, hips, or other sophisticated components.
The square footage of your roof will not match the square footage of your home due to these
slopes and pitches.
Satellite photography is used to assist you in accurately measuring your roof.
Dimesion of each side of roof: –
Length = 11.582 m Breadth = 2.1336 m
Length = 11.582 m Breadth = 3.96 m
Area of the whole roof: –
2.1336m x 11.582m = 24.711m2
3.96m x 11.582m = 45.86 m2
3.96m x 11.582m =45.86 m2
2.1336m x 11.582m =24.711m2
The total area of the roof (Adding all) = 141.14 m2
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  33
2.5Calculate the quantity of materials that are measured
by volume.
Bricks: –
Standard size of brick in australia: – 76mm x 230mm x 110 mm
Size after applying mortar :
77mm x 231mmx 111mm
Volume of 1 brick: –
0.07 m x 0.231 m x 0.111 m = 0.0017 m3
No of bricks = Volume of 1m3/ Volume of 1 brick
No of bricks = 1/0.00179 = 558.65 =559 bricks approximately.
Mortar
Mortar is made from cement, lime, and sand. The mortar table provided by the manufacturer
specifies the cementlimesand ratio that must be used.
Mortar  
M3 mortar – GP cement + Hy Lime 
Cement  Lime  Sand 
1  1  6 
The table shows the cementlimesand ratio as 1:1:6. This means that for every bucket (or
barrow load or shovel full) of cement in the mortar mix, we must add the same amount of
lime and six times the amount of sand, which is a ratio calculation.
Concrete
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  34
Concrete quantities are measured in cubic metres and calculated as a volume (m3).
Calculating how much concrete is required for a building’s slab is a multistep process.
Step 1: Choose the formula
Volume = L × B × H
When discussing a slab, the term “height” refers to the thickness of the concrete. The
thickness of the slab is determined by the engineer – in this case, 100 mm – so we only
need to obtain the other two dimensions from the floor plan – length and breadth.
Step 2: Convert the units
Because volume is measured in cubic metres, all three measurements must be in metres.
We already have the length and width in metres, but we’ll need to convert the slab height
from millimetres to metres. We move the decimal point three places to the left to make the
number 1000 times smaller.
For example:
Start with 100 mm.
Move the decimal point three times to the left. It becomes 0.10 m.
Step 3: Apply the formula
Volume = L × B × H
= 11.03 × 6.95 × 0.10
= 7.66585 m3
Step 4: Wastage
Even the most meticulous and wellcalculated jobs will result in some waste. When
calculating the volume of concrete needed, a percentage is added to the total to account for
irregular forms, varying thickness, and spillage during transport and depositing.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  35
The average wastage allowance for concrete poured on the ground is 10%. This means that
we must calculate and add 10% more concrete to the volume required.
Volume calculated (see above) = 7.66585 m3
7.66585 × 10% = 0.766585 m3
7.66585 + 0.766585 = 8.432435 m3
Step 5: Round the number to give the answer
Obviously, no one can measure concrete completely accurately to six decimal places as
calculated above, so our answer needs to be given to two decimal places, and we need to
round up. That means that in our example, the amount of concrete required for the slab is
8.44 m3.
The volume of different shapes can be calculated by the below given formula: –
S. No.  Shape  Volume (m3) 
1  Rectangle  Length(L) X Width (B) X Height (H) 
2  square  (Side)3 
3  triangle  1/2 (Base(b) X Altitude (a) X Height (h)) 
4  trapezium  {(1/2)(a+b)h} X height between trapezium ends 
5  cube  A3 Where a= side 
6  cylinder  πr2h Where r= radius of top and bottom circle H is height 
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  36
Selfcheck assessment
QUESTION 1
What are the different types of drawings?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 2
How can we calculate the total area of building wrap.
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 3
How can we calculate the area of lining material?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  37
CHAPTER 3: CALCULATE THE
REQUIREMENTS FOR CONSTRUCTION FOR
THE PROJECT.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  38
This chapter includes information regarding calculating the requirements for construction for
the project.
What will I learn?
In this chapter, you will learn about the following:
1. Calculate the quantity of wall and roof framing materials.
2. Calculate the dimensions and quantity of sheets of each type of flooring
and lining material, ensuring that the most economical layout is
employed.
3. 3Calculate the length of linear flooring and lining material, ensuring that
the most economical layout is employed.
4. Calculate the dimensions and quantity of sheets of external cladding
material, ensuring that the most economical layout is employed.
5. Calculate the length of linear external cladding material, ensuring that
the most economical layout is employed.
6. Calculate the dimensions and quantity of sheets or units of roofing
material, ensuring that the most economical layout is employed and
allowing for overlaps.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  39
3.1Calculate the quantity of wall and roof framing
materials.
For wall and roof framing materials following are the materials that need to be calculated:
Bricks and mortar: –
Calculating the number of bricks required to create a wall is a multistep process. We’re
going to figure out how to do that right now. Then we’ll go over the materials required.
Bricks: –
The wall we’re going to work out is the west wall on the drawing below and just the external
leaf (the outside wall). We’re going to assume an external wall height of 2400 and that
standard bricks will be used.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  40
Step 1: Identify the wall
Use the north point to determine that the west wall is on the lefthand side of the plan .
Step 2: Find the length of the wall
The wall hasn’t been dimensioned, so we’ll have to measure it using a scale rule. We can
see that the floor plan has been drawn at a scale of 1:100 (100 times smaller than real life)
so we need to use the side of the scale rule showing 1:100.
Step 3: Calculate the area
Draw a diagram of the wall to help.
Step 4: Check the units
We usually measure area in square metres (m2), so let’s convert those dimensions from
millimetres to metres first so we can easily calculate the area. To do so, we shift the decimal
point three places to the left, making 6950 mm 6.95 m and 2400 mm 2.40 m.
Step 5: Apply the formula
Area (rectangle) = B × H
= 6.95 × 2.40
= 16.68 m2
Step 6: Determine bricks per square meter
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  41
Now we have the area of the wall to be built, it’s time to work out how many bricks we’ll
need. The first part of doing that is to find out how many bricks are needed to build
1 m2 of wall. To do that, we need to know what kind of bricks are being used and then
check the manufacturer’s information on those bricks.
Face size  Bricks per m2 
76 X 230  48.5 
119 X 230  32.3 
162 X 230  24.3 
162 X 390  14.6 
Step 7: Calculate brick quantity
To work this out, we simply multiply the number of square metres of wall by the number of
bricks required per square metre.
Square metres of wall = 16.68 Bricks required per square metre = 48.5 Multiply 16.68 ×
48.5 = 808.98
We can’t order 0.98 of a brick, so we’ll need to round that number up to 809 bricks.
So, 809 bricks are needed to build the west wall.
Mortar
Mortar is made from cement, lime, and sand. The mortar table provided by the manufacturer
specifies the cementlimesand ratio that must be used.
Mortar  
M3 mortar – GP cement + Hy Lime 
Cement  Lime  Sand 
1  1  6 
Table shows the cementlimesand ratio as 1:1:6. This means that for every bucket (or
barrow load or shovel full) of cement in the mortar mix, we must add the same amount of
lime and six times the amount of sand, which is a ratio calculation.
Concrete
Concrete quantities are measured in cubic metres and calculated as a volume (m3).
Calculating how much concrete is required for a building’s slab is a multistep process.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  42
Step 1: Choose the formula
Volume = L × B × H
When discussing a slab, the term “height” refers to the thickness of the concrete. The
thickness of the slab is determined by the engineer – in this case, 100 mm – so we only
need to obtain the other two dimensions from the floor plan – length and breadth.
Step 2: Convert the units
Because volume is measured in cubic metres, all three measurements must be in metres.
We already have the length and width in metres, but we’ll need to convert the slab height
from millimetres to metres. We move the decimal point three places to the left to make the
number 1000 times smaller.
For example:
Start with 100 mm.
Move the decimal point three times to the left. It becomes 0.10 m.
Step 3: Apply the formula
Volume = L × B × H
= 11.03 × 6.95 × 0.10
= 7.66585 m3
Step 4: Wastage
Even the most meticulous and wellcalculated jobs will result in some waste. When
calculating the volume of concrete needed, a percentage is added to the total to account for
irregular forms, varying thickness, and spillage during transport and depositing.
The average wastage allowance for concrete poured on the ground is 10%. This means that
we must calculate and add 10% more concrete to the volume required.
Volume calculated (see above) = 7.66585 m3
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  43
7.66585 × 10% = 0.766585 m3
7.66585 + 0.766585 = 8.432435 m3
Step 5: Round the number to give the answer
Obviously, no one can measure concrete completely accurately to six decimal places as
calculated above, so our answer needs to be given to two decimal places, and we need to
round up. That means that in our example, the amount of concrete required for the slab is
8.44 m3.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  44
3.2Calculate the dimensions and quantity of sheets of
each type of flooring and lining material, ensuring that
the most economical layout is employed.
After calculating the area of the walls and lining material, now calculate the quantity of the
flooring and lining material.
After calculating the area next step is to divide the total area of the wall by the area of one
sheet to calculate the no of sheets required.
No of sheet = area of the wall/ area of one sheet
Taking the example: –
Considering both the cases: –
• Without opening
• With opening
WITHOUT OPENING
Area of the wall ( without opening) = L x B = 5.4 x 3 = 16.2 m2
Area of 1 sheet = 2.4 x 1.2 = 2.88 m2
Now let’s calculate the quantity of sheet required : –
Step 3: – No of sheets: – Total area of the wall / Area of one sheet
No of sheets= 16.2/2.88 = 5.6 = 6 (Approximately)
WITH OPENING: –
Area of the wall = L x B = 5.4 x 3 = 16.2 m2
Area of the opening= 2.1 x 0.9 = 1.89 m2
Net area of the wall = 16.2 – 1.89 = 14.31 m2
Area of 1 sheet = 2.4 x 1.2 = 2.88 m2
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  45
Step 5: Calculate the number of sheets required: –
No of sheets: – Net area of the wall / Area of onesheet
No of sheets = 14.31/2.88 = 4.9 = 5 sheets approximately.
Similarly, in this manner, we can calculate the quantity of flooring material.
3.3Calculate the length of linear flooring and lining
material, ensuring that the most economical layout is
employed.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  46
STEP 1 Work out your area in square meters
This is accomplished by obtaining width and length measurements and adding them
together. Do this for each side of a shed or structure if you’re doing many sides.
Length = 20 m and breadth – 10 m
In this example, you would time the 20m x 10 m = 200m²
STEP 2 – Working out linear metres:
This is accomplished by dividing the m2 by the width of the board. This is when things
become a bit tricky. Timber cladding overlaps and differs depending on the type of cladding
used. The overlap is 11mm, and the overall width is 150mm. As a result, we subtract 11mm
from the overall width, giving us 139mm. Using the equation as a guide, we divide m2 by
139mm (equivalent to 0.139m).
We’ll use 200m2 / 0.139mm = 1438.84 in the example above. This provides us with the
number of linear meters we’ll need.
STEP 3 – Working out how many boards are needed:
The last step is to calculate how many boards you’ll need based on the linear meter amount.
You may accomplish this by dividing your linear meter figure by the desired board length.
Once you get this number, increase it by 1.1 to account for any waste and to guarantee you
have enough. We have a variety of lengths of timber cladding boards, so you should be able
to choose one that matches the area you’re covering the best.
We would choose the 1438.84 3 in the case above (using 3m boards). The result is the
number 1438.84. The total number of boards required is then multiplied by 1.1. = 1438.84
x 1.1 (rounded). In this case, 1581 x 3.0m would be required.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  47
3.4Calculate the dimensions and quantity of sheets of
external cladding material, ensuring that the most
economical layout is employed.
After calculating the area of the building, wrap next is to calculate the example of the
quantity of cladding sheets required. For calculating the number of cladding sheets required,
we will simply divide the area of the wall with the area of one cladding sheet.
No of cladding sheets for wall 1: – Total area of wall 1 / area of 1 cladding sheet
Without opening:
Area of wall 1 = 5.4 m x 3 m = 16.2 m2
Area of 1 tile = 0.3 m x 0.3 m = 0.09 m2
No of tiles : – 16.2 / 0.09 = 181.11 = 182 tiles
With opening: –
Area of wall 1 = 5.4 m x 3 m = 16.2 m2
Opening area= 2.1 m x 0.9 m = 1.89 m2
Total area= 16.2 – 1.89= 14.31 m2
Area of cladding material 1 tile = 0.3 m x 0.3 m = 0.09 m2
No. of tiles : – Total area of one wall / Area of tile
No. of tile required = 14.31/ 0.09 = 159 tiles are required.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  48
3.5Calculate the length of linear external cladding
material, ensuring that the most economical layout is
employed.
STEP 1 Work out your area in square meters
This is accomplished by obtaining width and length measurements and adding them
together. Do this for each side of a shed or structure if you’re doing many sides.
In this example, you would time the 6m x 10m = 60m²
STEP 2 – Working out linear metres:
This is accomplished by dividing the m2 by the width of the board. This is when things
become a bit tricky. Timber cladding overlaps and differs depending on the type of cladding
used. The overlap is 11mm, and the overall width is 150mm. As a result, we subtract 11mm
from the overall width, giving us 139mm. Using the equation as a guide, we divide m2 by
139mm (equivalent to 0.139m).
We’ll use 60m2 / 0.139mm = 431.65 in the example above. This provides us with the
number of linear meters we’ll need.
STEP 3 – Working out how many boards are needed:
The last step is to calculate how many boards you’ll need based on the linear meter amount.
You may accomplish this by dividing your linear meter figure by the desired board length.
Once you get this number, increase it by 1.1 to account for any waste and to guarantee you
have enough. We have a variety of lengths of timber cladding boards, so you should be able
to choose one that matches the area you’re covering the best.
We would choose the 431.65 3 in the case above (using 3m boards). The result is the
number 143.883. The total number of boards required is then multiplied by 1.1. 158 =
143.883 x 1.1 (rounded). In this case, 158 x 3.0m would be required.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  49
3.6Calculate the dimensions and quantity of sheets or
units of roofing material, ensuring that the most
economical layout is employed and allowing for
overlaps.
After calculating the area in the previous section, now calculate the number of sheets for
roofing: –
As per the calculations in previous section: –
The total area of the roof (Adding all) = 141.14 m2
For sloping roof: –
1. Determine the total number of squares:
To calculate the number of “squares” in the roof, multiply the total square footage by 100.
The surface area of a roof is measured in “squares.” A roofing square is 100 square feet of
roof space. Divide the quantity of 2400 square feet by 100 to get the number of squares
on the gable roof in this post (2400 100 = 24). This indicates that to cover the roof, you’ll
need 24 squares of shingles.
In this example: –
141.14/100 = 1.41
2. Determine the bundles of shingles needed to cover the roof:
When using 3tab shingles, the most common variety, it takes three bundles to cover a
square.
In this example : 3 bundles= 3×1.4114 = 42.3 bundles = 43 bundles Approximately.
4. Account for waste: To account for waste, add 10% to your shingle estimate.
Make it 15% if your roof has hips and valleys since trimming tiles to match the valleys
wastes time and money.
43 bundles are calculated above.
Now add 10% on account of wastage: –
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  50
43 x 0.10 = 4.3
43 + 4.3 = 47.3 = 48 bundles approximately.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  51
Selfcheck assessment
QUESTION 1
How can we calculate the quantity of external cladding?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 2
How can we calculate the quantity of lining material?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 3
How can we calculate the quantity of wall material?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  52
CHAPTER 4: CHECK AND RECORD
RESULTS
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  53
In this chapter we will learn about checking and recording the calculations.
What will I learn?
In this chapter,you will learn about the following:
1. Record workings and review calculations for accuracy.
2. Record results of calculations as required for costing and ordering
materials.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  54
4.1Record workings and review calculations for accuracy
Everyone in the construction industry must be able to understand, obtain, and use
measurements accurately in a variety of situations, such as reading a plan to determine the
height of a wall or measuring the width of a window frame before it is loaded for delivery.
Being able to measure quickly, confidently, and accurately is a valuable skill because it
allows you to complete tasks quickly and without errors, which all employers value.
Ways of obtaining measurements: –
There are several methods for obtaining measurements. You can do the following:
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  55
Confirming calculations: – Always doublecheck any measurements you’ve taken before
putting them to use. That way, if you make a mistake, you can fix it before it’s too late.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  56
4.2Record results of calculations as required for costing
and ordering materials
The manner in which you record a measurement is determined by how it will be used. The
requirements for various tasks and workplaces will differ.
The most important thing is that all measurements, calculations, or
totals are clearly and accurately recorded, including the use of the
correct units. It is critical that anyone reading the information
understands and can rely on it.
Results can be stored in both soft copy form and hard copy form.
For a soft copy, excel sheets can be maintained, and for hard copies,
tables can be prepared in record books. It is recommended to keep
both types of records at the site.
Such types of tables can be prepared: –
S. No.  Item  Length (m) 
Width (m) 
Height (m) 
1  Main door (D1) 
Length(L) X Width (B)  
2  Window (W1)  (Side)2  
3  Outer north wall 
Πr2  
4  Outer west wall 
1/2 (Base (b) X Altitude (a)) 
Such types of tables can be prepared for material quantities also.
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  57
Selfcheck assessment
QUESTION 1
How can we record calculation using Spreadsheets?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 2
How can we canfirm calculations?
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
QUESTION 3
What are the different modes for obtaining measurements.
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
______________________________________________________________
CPCCOM3001 Perform construction calculations to determine carpentry material requirements Learner guide
Page  58
References
1. How to Calculate Wall Paneling. (2021). Retrieved 1 August 2021, from
https://homeguides.sfgate.com/calculatewallpaneling34955.html
2. How to Find the Area of a Roof (the RIGHT Way)  Roof Online. (2021). Retrieved 1 August
2021, from https://roofonline.com/roofslopemultiplier
3. Contractor’s Field Guide to House Wrap & Seaming  ECHOtape. (2021). Retrieved 1 August
2021, from https://www.echotape.com/blog/contractorsfieldguidetohousewrapseamingtape/#:~:text=House%20wraps%20are%20installed%20to,to%20a%20Gore%2DTex%20jack
et.
4. How to calculate the roof area of your property – Roofing Superstore Help & Advice. (2021).
Retrieved 1 August 2021, from https://www.roofingsuperstore.co.uk/helpandadvice/projectguides/pitchedroofing/calculatetheroofarea/
5. How To Install House Wrap #TheRightWay  ProTradeCraft. (2021). Retrieved 1 August
2021, from https://www.protradecraft.com/article/howinstallhousewraptherightway
6. Sloping Roof Construction Details  Calculating Volume Of Roof. (2021). Retrieved 1 August
2021, from http://www.sketchup3dconstruction.com/const/slopingroofconstruction.html
7. DIY Roofing  Owens Corning Roofing. (2021). Retrieved 1 August 2021, from
https://www.owenscorning.com/enus/roofing/tools/diyroofing#:~:text=Roof%20surfaces%20are%20measured%20in,shingles%20to%20cover%20t
hat%20roof.
8. (2021). Retrieved 1 August 2021, from https://dailycivil.com/calculatequantitiesmaterialsdifferentmixratioconcrete1/
9. How to Find the Area of a Roof (the RIGHT Way)  Roof Online. (2021). Retrieved 1 August
2021, from https://roofonline.com/roofslopemultiplier
10.(2021). Retrieved 1 August 2021, from https://www.doityourself.com/stry/howtocalculateareaforsiding