Alan Yates

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Alan Yates BREEAM Manager Centre for Sustainable
Construction BRE
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Centre for Sustainable Construction

• Pan BRE Centre which co-ordinates BRE expertise
  on sustainable construction
• Provides practicable tools and guidance aimed at
  minimising the impacts of new and existing
  construction

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Impacts of Buildings

• Over half of the 33 billion litres of water
  extracted each year is fed into the public supply
  system
• It is estimated that 316km2 of derelict land is
  available in the UK suitable for reuse
• A city centre office building results in similar
  levels of CO2 from building services and travel
• The UK construction industry consumes 6 tonnes
  of material per person per annum and creates
  3040 of annual waste

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Aims
BREEAM seeks to bring about reductions in the
environmental impact of buildings through
recognition of the business benefits which can be
achieved.
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• A scheme for the environmental
• assessment of buildings.
• Based on
• assessment at the design /
• operational stage
• performance against a broad range
• of environmental criteria
• the award of a visible certificate
• and detailed report

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Environmental Management - approach
Initial commitment
Initial Review
Identify Actions
BREEAM
Determine Targets
Report Results
Develop Action Plan
Gain momentum
Achieve Benefits
Implement Action Plan
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The Environmental Building
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Client Brief

• BREEAM Excellent
• Maximise credits achieved
• Allow for specific research
• targets

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ESICHECK predictions
Gas 59.4 kWh/m2/ a 12.5
kg/m2/a Electricity 35.5 kWh/m2/a
24.9 kg/m2/a TOTAL 37.4
kg/m2/a
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CO2 Credits
x1
x9
Credits under BREEAM
10
9
8
7
6
5
4
3
2
1
0
naturally ventilated
mechanically ventilated
air-conditioned
40
60
80
100
120
CO2 emissions (kg/m2/yr)
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NOx Emissions

• 1 credit - reduced Nox burners
• (lt200mg/kWh delivered energy)
• - Potterton Ultimate Derwent
• (Condensing - lt70mg/kWh)

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Ozone depletion
x7

• Type of refrigerants / Leak detection
• - Cooling is by ground-water
• - No refrigerants
• No Halon use
• Insulation materials
• - Mineral fibre expanded
• polystyrene (i.e. zero ODP)

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Natural resource Use
x4

• Solid Timber panel products
• - Cedar Maple Softwoods
• - Birch faced ply specified
• Demolition wastes
• - use as hardcore on site
• Recycling / Industrial wastes
• - Recycled Bricks Recycled
• aggregate recycled timber flooring

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Recycling Provision

• Provision of dedicated storage
• space (2m2 / 1000m2 office area)
• - Lidded bins provided in
• dedicated external area
• - Part of BRE scheme

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Legionnaires Disease
x2

• Legionnaires Disease (external
• airborne)
• - No wet cooling towers

• Compliance with CIBSE
• recommendation given in TM13
• - Guidelines fully implemented in
• design of DHWS

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Local Wind Effects

• Study by University of Bristol
• - Automatic qualification
• - Features studied - showed no
• design details that would effect
• findings.

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Local Noise Pollution

• Predicted noise levels at nearest
• residential properties to be
• at least 5dB below day time ambient
• not exceeding night time ambient
• - No noise generating plant (except
• toilet extract).

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Overshadowing

• Compliance with BRE report Site
• layout planning for daylight and
• sunlight.
• - Smaller footprint than previous
• building
• - Taller only to east (office wing)
• - Building to east on higher ground
• so no unacceptable overshadowing

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Water Consumption

• Specification of low flush volume
• WCs (i.e. lt6 ltrs / flush)
• - Ideal Standard (off-the-shelf)
• specified
• - max 6 ltr flushing volume
• - other manufacturers have
• comparable equipment

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Ecological Value
x3

• Reuse of Site
• - Completely within footprint of
• previous building
• Land of Low ecological value
• - As above
• Ecological enhancement
• - Measure taken to enhance value
• - Native species planting etc.

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Transport

• Provision of cycling facilities
• - Cycle racks on site are unsheltered
• and remote from building
• - Showers and changing facilities
• remote from building

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Indoor Air Quality
x3

• Ventilation (provision of openable
• windows)
• - Naturally ventilated and openable
• windows
• Passive smoking
• - BRE wide no smoking policy
• Type of humidification system
• - No humidification provided

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Hazardous Materials
x2

• Avoidance of harmful materials
• - No asbestos
• - No formaldehyde
• - No particle board or mdf
• Lead in paints
• - All primers / finishes lead free
• Timber preservatives
• - BS recommendations followed
• - All treatment of site

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Lighting Quality
x2

• Daylighting
• - 80 office area achieves BRE
• recommendations
• Illuminance
• - category 2 lunimaires (250lux)
• - task lighting to CIBSE
• recommendations
• - High frequency ballasts
• specified

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Thermal Comfort

• Thermal comfort study to be
• carried out. (re CIBSE Guide
• Volume A)
• - Extensive thermal modelling has
• been undertaken on project.

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Internal Noise

• Calculations to show noise levels do
• not exceed
• 40dB L aeq,T - Cellular
• 45dB L aeq,T - open plan
• - Desk study indicated compliance but...
• - Prevailing SW winds across motorway
• - Inadequate attenuation from openable
• windows

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BREEAM Rating - (1/93)
ACHIEVED
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8
9
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Ratings matrix from BREEAM / New Offices, version
1/93
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Life-cycle environmental impact
Use
Dismantling/demolition/ recycling
Use
Project design
Construction
Project inception brief
Refurbishment
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New issues

• Weighting of issues
• Transport
• Water conservation
• Materials

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BREEAM 98 for offices
Design Procurement issues
Core Performance Issues
Management Operation issues
New build and refurbishment
Existing and occupied
Existing vacant
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• Management
• Health Comfort
• Energy
• Transport
• Water
• Materials
• Land Use
• Ecology
• Pollution

BREEAM Rating
Environmental Weightings
Single Score
Assessment Credits
Issue Category Scores
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Pilot Assessment on EOF

• BREEAM Rating - VERY GOOD
• - Transport is main area which lets it down
• Environmental Performance Index
• - 8 out of 10

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Constructing the future
BRE Garston Watford WD2 7JR 01923
664000 www.bre.co.uk
BREEAM Office Centre for Sustainable
Construction 01923 664462 breeam_at_bre.co.uk