Unit 2 Sustainable construction - Pearson Education · 2014-04-29 · Unit 2 Sustainable construction Unit overview Credits: ... learners will understand the effects of pollution

© Pearson Education Ltd 2010. Copying permitted for purchasing institution only. This material is not copyright free.25

BTEC Level 3 National Construction

Unit 2 Sustainable construction

Unit overview Credits: 10 Diploma

The built environment of the UK is vast. It is being developed vertically, as well as horizontally, as more and more skyscrapers are appearing on city skylines. Aspects of the environment are identified and categorised in order to ensure the environment is protected by the appropriate authority. Construction activities can be commenced on greenfield sites, and the Government is keen to redevelop run-down inner-city areas and previous-use sites, known as brownfield sites. Great care has to be exercised when planning developments to ensure that they encompass sustainable elements of construction, in order to achieve the required design without compromising the future needs of our children.

After completing this unit, learners will understand the effects of pollution. They will understand how the environment can be protected and they will know about the areas of legislation that aim to achieve this, and how the environment is controlled by agencies and local authorities. The unit also examines the techniques that are being employed in domestic construction to provide the sustainability of our built environment: reducing energy use and wastage from production, and using renewable resources. The management of construction sites is also considered in this aspect.

This is a 10-credit unit and can be taught in 60 guided learning hours, with learners expected to complete around 40 hours of individual learning.

On completion of this unit, learners should:LO1 know the important features of the natural environment that need to be protectedLO2 understand how the activities of the construction and built environment sector impact on the

natural environmentLO3 understand how the natural environment can be protected against the activities of the

construction and built environment sectorLO4 understand sustainable construction techniques that are fit for purpose.

Unit contentsThe scheme of work for this unit (page xxx) links to the following resources to help you deliver Unit 2.

LO1 LO2 LO3 LO4

Lesson plan LP

Activity sheet AS1, AS2, AS3, AS4, AS5, AS6 AS7, AS8, AS10 AS9, AS10, AS11, AS12

Stretch and support AS2 AS5 AS7 AS11

PowerPoint® PPT1, PPT3 PPT2 PPT2

All these resources can be found on the accompanying CD-ROM, as well as an editable version of the scheme of work, and answers to questions in the student book.


26© Pearson Education Ltd 2010. Copying permitted for purchasing institution only. This material is not copyright free.

Links to other units Unit 2 links to other units, as shown below, and provides opportunities to cross-reference and combine the assignment work for these units.

Unit 2 Exploring health, safety and welfare in constructionUnit 17 Building regulations and contro

Stretch and supportAS2Identify how the impact of the development could be adapted to reduce its affect on the natural environment.

AS5Identify your local council’s website and find out what its principle policies are on sustainability and how they are achieving this as a local government organisation.

AS7Produce a slide show with annotations that could be used to present the environmental issues to the invited audience, using some photographs and local community consultations.

AS11Take the sustainable construction technique you have identified and undertake an evaluation as to what it does in terms of energy, material and wastage.



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o

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rb y

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t in

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ct t

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ent?

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und

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ctiv

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ater

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tify

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a

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as

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ions

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17To

und

erst

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w t

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ctiv

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CB

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pro

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© Pearson Education Ltd 2010. Copying permitted for purchasing institution only. This material is not copyright free.


35

AS1 Construction and the environment1. Your tutor will divide your class into two groups. Each group will discuss their interpretation of the

following headings. Under each heading, list as many examples as your group can think of.

Your tutor might provide you with an aerial photograph of your town to serve as a focal point, or you might be encouraged to look at Google Earth.

Construction Environment

e.g. houses e.g. countryside

2. As a class, share all the examples you came up with in your groups. Were there any examples you hadn’t thought of?



AS2 Aspects of the natural environmentThere has until recently been a large growth in out of town shopping centres, which are purpose made projects that are built on areas of green field sites on the outskirts of towns, close to transport networks.

A large commercial site developer is considering just such a scheme on the outskirts of where you live. It will house 12 large retailers, restaurants, a small cinema and some fast food outlets. There is a great volume of local objections to this proposed planning application. In order to assist with the planning application you have been asked to prepare a report on what affect this will have on the local environment.

Identify six features of the natural environment that must be considered at this stage.

1. .....................................................................................................................................................................................

2. .....................................................................................................................................................................................

3. .....................................................................................................................................................................................

4. .....................................................................................................................................................................................

5. .....................................................................................................................................................................................

6. .....................................................................................................................................................................................

Stretch and support

Identify how the impact of the development could be adapted to reduce its affect on the natural environment.



37

AS3 Biodiversity exerciseOutdoor activity.

Your tutor will take you to a green and widely ranging bio-diverse environment. Place your quadrat on the floor and count how many species of wildlife you can see in this 1m2 area. Take care not to destroy or damage this environment!

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................

...........................................................................................................................................................................................



AS4 Global vs localThis activity has been designed to make you think about the issues that affect your local area, and the rest of the world.

1. Place each of the following factors under the heading that it is most likely to have an impact on, and explain your reason for putting it there.

Factor Local or global effect? Reason

CFCs

VOCs

Fossil fuel extraction

CO2

Traffic

Noise

Smell

Electricity generation

Contaminated land

Waste disposal

Sick building syndrome

Sewage disposal

Deforestation

Acid rain

Ozone depletion



39

AS5 Construction industry’s impact on the environment

1. In teams of two look around your own town, village or city and identify three previous industrial sites that are now used for another purpose.

a) ..........................................................................................................................................................................

b) ..........................................................................................................................................................................

c) ..........................................................................................................................................................................

2. Name one area of land that has now been taken over by a major roadway.

.....................................................................................................................................................................................

3. Name a housing development that is near to overhead power lines

.....................................................................................................................................................................................

4. Identify where your local council waste collection is disposed

.....................................................................................................................................................................................

5. Find out where the local authority air monitoring stations are located

a) ..........................................................................................................................................................................

b) ..........................................................................................................................................................................

Stretch and support

Identify your local council’s website and find out what its principle policies are on sustainability and how they are achieving this as a local government organisation.



AS6 Identifying extraction areasFor this activity, your tutor will show you how to use Google Earth, and how to scan across land masses.

1. Find your home town on Google Earth. Look at the area and identify key features.

2. Try to find some areas that have been used for the extraction of raw materials, for example, coal mines, steelworks, quarries, etc.

Identify how big these areas are in any unit of measurement so that you can see the scale of the damage to the environment.



41

AS7 Methods of protectionYour tutor will show you photographs of a valuable piece of land that is used by the community; it might be a local landmark. This land is to be developed.

For this task, your tutor will randomly divide the class into two teams:

One team will be the developers.The other team will be environmentalists.

Each group should prepare arguments to support their point of view in a debate on whether to develop this land or not, i.e. the developers want to develop the land, and the environmentalists want to prevent the development. The developers need to base their argument on grounds of what environmental planning they are going to put into the development to convince the planners and appease the protestors.

Once you have prepared your arguments, you will then go into the debate. Your tutor will be the chairperson of the local authority planning committee. They will make a decision, based on the arguments presented, and conclude the discussion by focusing on what measures can be used to protect this land from development.

Stretch and support

Produce a slide show with annotations that could be used to present the environmental issues to the invited audience, using some photographs and local community consultations.



AS8 Energy/environment audit1. Answer the following questions to rate how efficiently you use energy at home.

Question Yes No

Is the energy rating of your fridge grade A?

Do you have more than five energy saving light bulbs in your home?

Do you leave fewer than three items of electrical equipment on standby overnight?

Are you on a water meter?

Do you have an energy-efficient boiler?

Is your heating thermostat set below 20 degrees?

Do you have you more than 150mm of loft insulation?

Is your hot water cylinder insulated?

Is your house fitted with double glazing?

Do you recycle any household waste?

Each ‘yes’ is worth 2 points and ‘no’ is worth 1 point. Add up your score and look at your results:

20 points – well done, you are doing a lot to reduce your impact on the environment. 12–19 points – you are on the right tracks but there are still more things you could do.0–11 points – you should be doing a lot more to reduce the amount of energy you use.

2. List at least four methods you could use to reduce your energy consumption.

a) ..........................................................................................................................................................................

b) ..........................................................................................................................................................................

c) ..........................................................................................................................................................................

d) ..........................................................................................................................................................................



43

AS9 Minimising waste on a building siteIt is a site manager’s duty to maximise efficiency, and minimise waste and energy use.

If you were a site manager, how could you tackle each of the following factors to reduce the impact your site has on the environment?

1. All waste is being thrown into the general waste skip on site. What measures could you put in place to reduce the amount of waste going to the landfill?

.....................................................................................................................................................................................

.....................................................................................................................................................................................

2. There are a number of brick out-buildings on site that need to be demolished. Would you recommend moving the rubble off site? If not, what would you do with it?

.....................................................................................................................................................................................

.....................................................................................................................................................................................

3. The off cuts from the roofing work are being piled up to be burned. Can you think of any alternatives to burning them?

.....................................................................................................................................................................................

.....................................................................................................................................................................................

4. Many final materials are being delivered too early on in the project and are having to be stored. What action needs to be taken as a result?

.....................................................................................................................................................................................

.....................................................................................................................................................................................

5. Each night the bricklayers are leaving unfinished mortar that has not been used on the spot boards. How could you prevent this waste?

.....................................................................................................................................................................................

.....................................................................................................................................................................................



AS10 Sustainable construction techniquesSustainability means producing a sustainable outcome without contributing to energy loss or wastage of a product. For each of the factors given below, describe a sustainable construction technique that can be used to minimise the impact on the environment.

1. Energy

.....................................................................................................................................................................................

.....................................................................................................................................................................................

.....................................................................................................................................................................................

.....................................................................................................................................................................................

2. Materials

.....................................................................................................................................................................................

.....................................................................................................................................................................................

.....................................................................................................................................................................................

.....................................................................................................................................................................................

3. Waste

.....................................................................................................................................................................................

.....................................................................................................................................................................................

.....................................................................................................................................................................................

.....................................................................................................................................................................................



45

AS11 Comparing sustainable techniquesIdentify and compare the sustainable techniques previously chosen in terms of cost and performance in use by completing the rest of the boxes.

Env

iro

nmen

tal i

ssue

Sust

aina

ble

co

nstr

ucti

on

tech

niq

ues

Co

stP

erfo

rman

ce in

use

Ene

rgy

Mat

eria

ls

Was

te

Stretch and support

Take the sustainable construction technique you have identified and undertake an evaluation as to what it does in terms of energy, material and wastage.



AS12 Issues surrounding house construction

1. Name three alternative sources of energy for domestic housing.

a) ..........................................................................................................................................................................

b) ..........................................................................................................................................................................

c) ..........................................................................................................................................................................

2. Specify three renewable materials used in house construction

a) ..........................................................................................................................................................................

b) ..........................................................................................................................................................................

c) ..........................................................................................................................................................................

3. Name three techniques to reduce the production of waste on site.

a) ..........................................................................................................................................................................

b) ..........................................................................................................................................................................

c) ..........................................................................................................................................................................

Documents

Unit 2 Sustainable construction - Pearson Education · 2014-04-29 · Unit 2 Sustainable construction Unit overview Credits: ... learners will understand the effects of pollution