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General BREEAM presentation

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BRE Environmental Assessment Method. Benchmarks and checklists of performance ... Publicising achievements. Devonshire building University of Newcastle ... – PowerPoint PPT presentation

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Title: General BREEAM presentation


1
Tim Bevan Centre for Sustainable Construction
Using BREEAM to Assess the Environmental
Performance of Buildings
2
Introduction
  • What is BREEAM?
  • Drivers and users of the scheme
  • Key benefits to the users
  • Questions

3
What is BREEAM?
  • BRE Environmental Assessment Method
  • Benchmarks and checklists of performance
  • Positive credits - motivational and practical
  • Developed in partnership with commerce and
    industry
  • Progressively evolving and improving

4
BREEAM aims to
  • Reduce the environmental impact of construction
    and building operation.
  • Recognise best practice.
  • Highlight the economic benefits to stakeholders
    and clients.
  • Provide comprehensive method of measuring and
    monitoring environmental performance.
  • Consider all areas of Sustainability i.e.
    Economic, Environmental and Social.

5
Keeping Ahead of Legislation
UK Building Stock
Environmental performance
6
Different Stages of BREEAM
  • All BREEAM versions
  • Applicable to new buildings at design stage.
  • BREEAM Offices Retail version
  • Applicable to unoccupied existing buildings.
  • Applicable to occupied existing buildings.

7
BREEAM criteria
  • BREEAM provides a set of predefined criteria
  • Many of the criteria set specific performance
    targets
  • Others are more subjective and harder to quantify
  • Does not cover every possible design solution

8
Environmental Issues
9
History
  • First version developed in 1990
  • 1/90 New Offices
  • 2/91 New Superstores and Supermarkets
  • 3/91 New Homes
  • 4/93 Existing Offices
  • 5/93 New Industrial Units
  • Environmental Standard

10
Current Versions
BREEAM for Offices
EcoHomes
BREEAM Industrial
BREEAM Retail
NEAT (hospitals)
11
Bespoke BREEAM
12
Under development
BREEAM for Prisons
BREEAM for Schools
13
Future Development
Leisure facilities
Higher Education
EU energy directive
14
Key Drivers for using BREEAM
  • Demonstrate the sustainability credentials to
    planning authorities, investors and customers.
  • Reduced energy and other running costs.
  • Improved staff productivity.
  • Making buildings more lettable and potentially
    higher rental incomes.
  • Making buildings more attractive to potential
    customers or tenants.
  • Pre-empt legislation.
  • Setting targets for improvement.
  • Improved image ethical investment policies

15
BREEAM Users
  • Government Property Construction Panel.
  • Prisons, job and pension centres, MOD, NHS, Local
    Authorities.
  • Non-Departmental Public Body
  • Housing Corporation
  • English Partnerships
  • Commercial developers
  • Land Securities
  • Grosvenor
  • Architects, ME engineers, Directors of Estates.

16
How BREEAM is used by clients
  • Product labelling
  • As a specification tool
  • As a design tool
  • As a measurement tool within EMS

17
Benefits to users Building Occupiers
  • Improved environment increase in building users
    productivity.
  • Reduced operating costs climate change levy,
    energy, water and maintenance costs.
  • Increased flexibility.

18
Improved environment
  • Indoor air quality
  • Control of thermal environment
  • Natural daylight levels and glare control
  • Control of artificial lighting
  • Degree of occupant control over ventilation,
    temperature and lighting
  • General ambience and aesthetic environment
  • Availability of transport for commuting, business
    and leisure use
  • Acoustic environment
  • Scale of working spaces, which can effect degree
    of ownership
  • Social meeting areas, rooms and other amenities

19
Wessex Water - Operations Centre
20
Wessex Water - Internal Street
21
Solar Shading
22
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23
Reduced Operating Costs
  • Design of the building form and fabric to
    minimise system loads through use of daylighting,
    avoidance of unwanted solar gain.
  • Control of heat and ventilation losses
  • Avoidance of air-conditioning.
  • Provision of occupier control over temperature
    and ventilation
  • Interlocking between potentially conflicting
    systems such as heating and cooling.
  • Specification of efficient lighting, heating and
    cooling systems.
  • Zoning of heating, cooling, ventilation and
    lighting systems to take account of building
    orientation, daylighting potential, space.
  • Ease of monitoring of energy and water costs
    through the provision of sub-meters to key plant
    and systems.

24
Increased flexibility
  • Careful zoning and adaptability of the basic
    services within a building to allow for changes
    in use patterns, and therefore loads.
  • Variable scales of floor plates to accommodate
    differing occupier demands.
  • Avoiding the need for inflexible internal
    load-bearing walls
  • Open-plan spaces, allowing lots of air and
    natural light whilst maintaining privacy and
    quiet working space.
  • Careful design of the acoustic environment to
    control background noise levels.
  • at a later date to allow for subletting or
    expansion into other areas.

25
Benefits to users developers
  • 1) Lower costs
  • 2) Improved image
  • 3) Fewer construction defects

26
Financial costs vs. Environmental benefit
1) Lower costs
  • Energy Efficient Buildings are expensive
  • True or False?

27
Study findings
  • Most believe that energy efficient buildings are
    more expensive to build.
  • Environmental issues second only to location.
  • Save capital, running costs and improve corporate
    image
  • Value of hidden assets

28
Specification Details - Reference Case
  • 8 storey office, rectangular deep plan
  • Central atrium
  • 4 pipe coil full fresh air air conditioning
  • designed to 1995 building regulations
  • 60 glazing throughout

29
Improving an Air Conditioned Building
Energy Cost (per annum)
Capital Cost
30
Conclusion
  • Cumulative capital cost savings of all measures
    55/m2 GFA
  • Fabric costs increased by 2
  • Services costs decreased by 11
  • Running cost savings of 3/m2 GFA
  • (this represents a saving of almost 50 !)
  • This would be matched by a similar saving in CO2

31
From Air Conditioned to Naturally Ventilated
Passively Cooled
32
Air Conditioned to Naturally Ventilated - Savings
  • Cumulative capital cost savings of all measures
    200/m2 GFA - this represents a massive 20 of
    the total capital cost.
  • Operational Energy savings of 4.0/m2 GFA (50 of
    the total energy cost).
  • 48 Savings in CO2 emissions

33
Conclusion
  • Energy Efficient Buildings are expensive.
  • Not necessarily true.

34
2) Improved image
  • Environmental sensitivity in design
  • Sensitive construction to minimise disturbance to
    ecosystems, neighbours and avoid pollution
  • Measurement of impacts
  • Careful and accurate reporting of impacts
  • Publicising achievements

35
Devonshire building University of Newcastle
36
Presentation of BREEAM Certificate
37
3) Fewer Construction defects
  • Clear responsibilities for commissioning of
    fabric and mechanical, heating, cooling,
    lighting, plumbing, electrical and ventilation
    systems
  • Sufficient time allocation for commissioning as
    above
  • Consideration of off-site construction techniques

38
To surmise, BREEAM
  • Define the issues
  • Set the standard
  • Overcome barriers to opportunities to influence
    environmental improvement

39
Questions?
40
Tim Bevan Centre for Sustainable Construction
Using BREEAM to Assess the Environmental
Performance of Buildings
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