This document discusses sustainable construction and development. It addresses economic, environmental and social aspects of sustainability. Specifically, it covers issues like climate change, resource depletion, waste and pollution. It also provides statistics on UK energy production, construction waste, water usage and housing stock. The document proposes strategies for sustainable construction, including improving building envelopes, using renewable energy sources, selecting materials with low embodied energy, and designing for resilience to climate change impacts. It describes standards and targets for new buildings as well as challenges in making existing buildings more sustainable.
6. Fuels for UK Generation
Coal Oil Gas Nuclear Other
1990 65 11 1 21 2
2005 38 1 33 21 7
2006 41 1 31 20 7
2007 39 1 36 17 7
Source: BERR
7. Source:
Environment
Agency
SWMP have been a legal
requirement on all jobs above
£300,000 since April 1, 2008.
Industry figures estimate that
materials to make one in every
five houses end up as waste.
Landfill 2005
8. Britain – Summer 06
• SE had less potable water than the Sudan
• Water consumption rising by 1% per
annum
• Average household demand has rapidly
increased we use 55% more water than in
1980 (150 litres pp/pd)
• Hosepipe bans for 18 months in some
areas
9. Britain - Summer 07
Two thirds of the floods in
Summer 07 were nothing to
do with rivers breakingtheir banks.The floods were caused by
storm surge in drainagesystems which wereincapable of coping with the
volume of water.
10. Construction as a target
• Carbon Dioxide Emissions
– Buildings 46%
– Domestic 27%
• Water demand rising
– 56% - of water supplied is domestic
• Buildings significant in terms of natural
resources
– Materials in their construction
– Construction waste is a significant waste stream
• Demand for housing continues to grow,
meaning increasing pressure to find land for
development
11. Standards
• Legislation, Regulation & Reporting
Stern
Review
The application of BREEAM excellent standards, or equivalent, to
all Government new builds and major refurbishments
All new homes built by RSLs, or others with Housing Corporation
funding, will comply with Level 3 of the Code
16. ENERGY
EFFICIENCY
PART L: CO2
Code Level 1 10%
25%
44%
Code Level 2
Code Level 3
Code Level 4
Code Level 5
Code Level 6
“RENEWABLES”
100%
14%
>100%
PART L
2010
PART L
2013
PART L
2016
CfSH - Energy
17. The Big Challenge - Existing
• Domestic Buildings
– 26 million homes
– 50% of homes over 50 years, 20% over 100 years
– 160,000 new homes each year, just 20,000 demolished
– At least 80 per cent of the homes that will be standing
in 2050 have already been built
– Will have to last 1,000 years at current clearance rate
– 37% fail Decent Homes Standard
• Non-domestic buildings
– 70% of non-domestic buildings pre-date Part L (1985)
– 40% of buildings in 2050 will pre-date Part L (1985)
– New build represents 1-2% of floor space in any 1 year
19. Aims Results/Targets Strategies
Carbon &
Energy
Efficiency
Significant reductions in energy
demand and supply of energy
through carbon intensive means
Maximising the envelope efficiency
of the building
Suggest appropriate systems
Look at on and off site resources to
limit use
Water
Efficiency
Reduce demands for potable
water
Reduction of waste water
Reduce demand through water
efficient products
Minimise drainage implications
Harvest rainwater
Using
sustainable
materials
Minimisation of embodied energy
Life cycle assessed products
Natural materials and recycled
content
Identify roles of materials and
suggest alternatives
Understand sources and
implications
Coping with
climate change
Recognise the potential impacts
of future climate change
Assess effects of peak weather
events
Describe potential local scenarios
and assess effects on the building
and surrounds
Positive social
contribution
A building that will be durable and
attractive, improving quality of life
Develop community engagement
plan to define inclusive strategy for
access and use
Sustainable
operation
Easy & efficient use which will
reflect performance though
monitoring & measurement
Identify maintenance requirements
Minimise waste outputs
Train users & managers
20. Basic Strategy - 1
Envelope of the building
Orientation of the building
Products which optimise
performance
In use
In controlling use
Design the building to
minimise energy demand
21. Basic Strategy - 2
Local renewables
Solar thermal
Heat Pumps
Biomass
CHP
Photovoltaics
Remote renewables
Green Tariffs
District Heat & Power
Large Scale
When
energy use
is
unavoidable
try to use
renewable
sources
22. Basic Strategy - 3
Strive to use
products with
the lowest
environmental
impact
Low embodied energy
High recycled content
Water efficient
Ease of installation
Durable in application
Maximise use of local
natural resources
Easy to maintain
Supply Chain
23. Materials Cycle
Long term
sustainability
Short term
availability
Ongoing
maintenance
Practicality &
economy
End of life
cycle plan
Efficient production
and delivery Embodied energy
Sustainable
supply chain
Durability, spares &
long term stability
Recycle or disposal
25. A living, interactive showcase for renewable and sustainable
materials for building and water conservation projects
providing a commercial route to market
Sustainable Building Center
Royal Leamington Spa