Nigel Jones Natural Materials in Building Construction Presentation

Transcription

6th March 2014
The Enterprise Centre, The University of East Anglia
Nigel Jones, Business Innovation Manager
The Adapt Low Carbon Group
www.adaptcbe.co.uk
adaptcbe.wordpress.com
@adaptcbe
#cbeseminar
Stakeholders and funding
Project:
The Enterprise Centre
Client:
University of East Anglia (UEA)
Funding:
ERDF, UEA, BRE and BBRSC
Project Value:
£17m
ERDF Funding:
£7.1m
UEA Funding:
£7.4m
BBSRC Funding: £2.0m
BRE Funding:
£0.5m
www.adaptcbe.co.uk
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ERDF outputs and results targets
Description
Target
Businesses receiving support
613
Jobs created
257
Jobs safeguarded
202
Successful environmental initiatives in SMEs
102
Successful start-up businesses
35
New or existing businesses locating to eco-efficient, high
quality work spaces
35
Businesses supplied with low or zero carbon energy
35
Businesses integrating new products, processes or services
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562
Centre for the Built Environment business support
12 hours business support free of charge
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Technical support - eg BREEAM and Passivhaus
Embodied carbon assessments
Materials assessments
Accessing funding
Market assessment
Business development
Start-up support
www.adaptcbe.co.uk
@adaptcbe
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Reports and webinars
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Seminars
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Designing and delivering Passivhaus and low carbon buildings
Natural materials in the built environment
The value of ‘green’ buildings
Costs & benefits of renewable technologies in the built environment
Retrofitting the UK’s building stock – what are the options?
Site tours of the Enterprise Centre
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Frame & structure
Curtain walling & solar shading
Rain screen cladding
www.adaptcbe.co.uk
@adaptcbe
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UEA: the Elizabeth Fry Building
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Low Carbon Supply Chains
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Project Brief - Standards & Qualitative
• A ‘World Class’ building – Exemplary Academic Workspace Environment
• ‘Gateway to the University’
• Flexible & Adaptable space
• Ability to hold conferences and other events
• Showcase of Sustainability:
• 100 Year Design Life
• Passivhaus Certification
• BREEAM Outstanding
• Very low embodied energy – Aim to be a ‘carbon sink’
• Focus on local supply chains
• High use of natural materials
• Soft landings and 3 year post occupancy evaluation
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@adaptcbe
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The Enterprise Centre: Risk
RISK: lack of knowledge,
cost, supply chain
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Passivhaus – basic principles
• Aim: To reduce the requirement for space heating and cooling and primary
energy consumption, whilst also creating excellent indoor air quality and
comfort levels
• Fabric first approach to low energy buildings with
• Excellent thermal performance
• Exceptional air tightness
• Mechanical ventilation
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Passivhaus - Meeting Standard Performance Targets
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Passivhaus - Orientation & Area/Volume Ratio
Passivhaus recommends designing the
building to be north / south facing, so that the
solar gains can be shaded and controlled
easier.
An E-shaped building designed to achieve
the correct orientation.
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The Enterprise Centre at the UEA
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Project Delivery Team
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BSRIA - Soft landings / Lifecycle costs
Stephen Letch - East Anglia Master Thatchers
MLM - Ecological & Environmental Services
BRE - Passivhaus Certification
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What is being measured?
A1-3
D
A4-5
PASSIVHAUS CONCERN =
C1-4
B1-7
Graphical representation of
TC350 Display of modular information for the different stages
Construction Life Cycle, by
of the building assessment
Dr Sophie Trachte,
Grey Energy of Building Materials
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Materials Map – Initial thoughts
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Embodied Carbon - Carbon Storage
=
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Hemp Insulation
-173,000 kgCO2e
=
Thatch Cladding
=
Timber Structure
-28,000 kgCO2e
-1,821,000 kgCO2e
Embodied Carbon – Materials Breakdown
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Residential
Embodied Carbon Benchmark
(Enterprise Centre – 450 KgCO2/m²)
Commercial
Office
925 kgCO2/m²
Retail & Leisure
Atkins
Community
845 kgCO2/m²
Masterplanning
Tool - 2010
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Uni Building
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Building Design
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Natural Materials - External
Thatched reed roof lights
Cross-laminated
timber (CLT) frame
Thatched wheat straw rain
screen cladding panels
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Natural Materials - Internal
Proposed: Local timber
wall slats
Recycled newspaper &
hemp batts insulation
Natural paints
CLT timber frame
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Natural Materials - Internal
Proposed: Local timber
wall slats
Proposed: Hemp & lime,
clay plasters
Proposed: Jute, nettle,
timber, sisal floor
coverings
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www.adaptcbe.co.uk
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Timber – CO2 Impacts
Canadian Timber,
From Montreal via Liverpool
70% reduction
Northern European Timber,
From Oslo via Port of London
91% reduction
Locally sourced Timber
from East Anglia
Land
Sea
0
10000
20000
30000
40000
50000
Total Transportation Carbon for Timber at UEA [kgCO2e]
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60000
Timber – local supply chain
Corsican Pine
Grand Fir
Working with BRE and the Forestry Commission to test Local Timber
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Timber – local supply chain
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Timber – ready for use for non structural elements
Corsican pine from Thetford Forest
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Thatched elements
Norfolk reed traditional
thatch roof lights
Yeoman straw thatched
cladding panels
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Thatching - background
• Thatching materials were traditionally sourced locally;
• straw is a by-product of food production and
• reed grows across UK (including the Norfolk Broads)
• Much now in the UK is imported (typically from eastern Europe)
• increased embodied energy and carbon emissions, raising questions
around its sustainability credentials.
• Currently thatch in the UK is limited to heritage conservation work.
• Without innovation and adoption into new build its continued use will remain
limited
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Thatching – modern built environment
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Thatch as rainscreen cladding
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Thatching – panel trials
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Thatching – panel trials cont.
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Benefits of thatch cladding panels
• Sectional thatch cassettes constructed off site
• Minimal waste
• Weather and daylight construction issues reduced
• Opportunity for panels to be constructed in ‘off-season’
• No scaffolding required on site for erection
• Quickly installed
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@adaptcbe
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Benefits: low embodied carbon
Approximate comparative Carbon Lifecycle Impacts - 100 year life
material
replacements
kgCO2e/m2
(production and
in use)
kgCO2e/m2
including
sequestration
Thatch
1
20
-30
Local Timber
2
15
-15
Brick Cladding
0
65
65
Zinc rainscreen
1
60
45
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Challenges – Sole traders
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Barriers: Mat01 Life Cycle impacts
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Barriers: Mat03 Responsible Sourcing
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The Enterprise Centre – Start of work
www.adaptcbe.co.uk
@adaptcbe
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Seminars
•
•
•
•
•
•
Designing and delivering Passivhaus and low carbon buildings
Natural materials in the built environment
The value of ‘green’ buildings
Costs & benefits of renewable technologies in the built environment
Retrofitting the UK’s building stock – what are the options?
Site tours of the Enterprise Centre
•
•
•
Frame & structure
Curtain walling & solar shading
Rain screen cladding
www.adaptcbe.co.uk/CBE/events
www.adaptcbe.co.uk
@adaptcbe
#cbeseminar
Thank you for listening. Any questions?
E: [email protected]
T: 07890 256 147
www.adaptcbe.co.uk
@adaptcbe
#cbeseminar

Nigel Jones Natural Materials in Building Construction Presentation

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