RWB Blank PowerPoint Presentation Template

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PROCESS VALUE SUSTAINABILITY
JOHN JOYCE
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INTRODUCTION

• How to approach Part L and Building Regulations
  requirements on refurbishment schemes
• Strategies for improving building services
• Value of good planning to tackle refurb /
  remodeling schools
• Sustainable options and carbon target
• Measure to control energy

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HOW TO APPROACH PART L AND BUILDING REGULATIONS
REQUIREMENTS ON REFURBISHMENT SCHEMES
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PART L BUILDING REGULATIONS

• The building regulations are a key part of the
  government plan aimed at 20 reduction in Carbon
  by 2010
• New guidance is contained within the approved
  document L2B
• Work on existing buildings other than dwellings.
  Amendment requires internal improvements to be
  undertaken to an existing building at additional
  cost.

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PART L BUILDING REGULATIONS

• These additional works are called-
• Consequential Improvements

• The interpretation for Consequential
  Improvements is that a sum not less than 10 of
  the value of the principal works must be spent
  upgrading the existing building.

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PART L BUILDING REGULATIONS

• Detailed guidance however in approved document
  L2B states that if the existing building has a
  useful (heated) floor area in excess of 1000m2
  and an extension is proposed or introducing a new
  fixed Building Service or to increase the install
  capacity of a fixed Building Services, you will
  need to address consequential improvements to
  achieve compliance.

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PART L BUILDING REGULATIONS

• In reality, when extending, altering or
  refurbishing an existing building will be
  dependent upon the existing and proposed,
• External lighting, space or Water Heating
  Systems, Air Conditioning and Mechanical
  Ventilation as a result.
• Advise from an MEP Consultant

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STRATEGIES FOR IMPROVING

• Heating
• Cooling
• Lighting

STRATEGIES FOR IMPROVING BUILDING SERVICES
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CONSEQUENTIAL IMPROVEMENTS

• For an extension Consequential Improvements
• Not less than 10 of the value of the
  principal
• works should be spent on-
• Upgrading heating, cooling on air handling
  systems more than 15 years old
• Upgrading general lighting systems that cover an
  area in excess of 100m2 /Lamp efficiency or less
  than 40 lamp lumens/per circuit watt

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CONSEQUENTIAL IMPROVEMENTS

• Install energy metering
• Upgrading thermal elements with poor U values
• Replacing existing windows to achieve a U
  value of 3.3W/m2K
• Increase on-site low carbon energy systems to
  provide at least 10 of a building energy needs

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CONSEQUENTIAL IMPROVEMENTS

• Finally the cost of improvements should exceed
  10 of the principal build cost they should be
  less than 15 years payback plus technical
  feasible or 7 years payback if LZC systems are
  used.

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CONSEQUENTIAL IMPROVEMENTS

• It could be argued that the way AD L2B has been
  written is to help to achieve the governments
  20 reduction in carbon emissions, and not to
  increase construction cost by 10
• The aim of Consequential Improvements is
  putting the focus back on energy efficiency and
  reducing energy consumption.

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VALUE OF GOOD PLANNING TO TACKLE REFURB /
REMODELING SCHOOLS
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BUILDING STRUCTURE OLD REFURB

• Examine thoroughly building fabric both
  structurally / architecturally
• Establish extent of survey work required
• Intrusive / uncover / condition reports

• Examine building footprint surrounding area and
  geology
• Look for examples of weather ingress damage to
  fabric / structure / examine existing MEP

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DRAINS SERVICES

• Survey the Building Services and drains. Request
  for old drawings as fitted/OM manuals. Treat
  with care
• Provide a condition report on Building Services
  / Building Fabric and establish Route Map for
  compliance
• Existing Building Services to be retained must be
  tested ASAP and its life expectancy
• Allow sufficient contingency cost allowance

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BUILDING SERVICES

• Selection for internal/external plant dependant
  upon-
• Weight
• Size
• Location
• Acoustics
• Aesthetics
• Planning
• Look to utilise the existing plant space or build
  new è package plantroom?
• Finally assess the impact / intrusion of the
  building services
• Confirm site phasing/decanting/shut down periods

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SUSTAINABLE OPTIONS AND CARBON TARGETS
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SUSTAINABILITY TARGETS

• Carbon Footprint of the Building 60
  reduction of carbon emissions associated with
  the _ operation of the building compared to
  2002 Part L _ Building Regulations
  baseline. Achievement of this target
  secures an additional 50/m2. (Dept. for
  Children, Schools and Families)
• Renewable Energy at least (10 to 20) of
  energy demand on site needs to be sourced from
  a renewable energy supplier.

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SUSTAINABILITY TARGETS

• Recycled materials a minimum of 10 of
  re-used, reclaimed, recycled _materials by
  value. (Sustainable Buildings Task Group
  _report, May 2004)
• BREEAM Very Good minimum BREEAM rating.
  Look to achieve EXCELLENT.
• Carbon Performance Targets _ New schools
  requires to demonstrate the achievement of _
  27kgCO2/m2 target (Pfs/DCSF) and 40kg/CO2/M2
  in all_other circumstances.

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CARBON FOOTPRINT
60 REDUCED CARBON FOOTPRINT

• Reducing the carbon footprint as a basis for
• eliminating demand first
• followed by implementing energy efficiency
  measures
• integrating renewable energy technologies
• and finally low and zero carbon energy
  generation.

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LOW ENERGY FEATURES

• Natural ventilation
• classrooms operable windows, low level vents
  using stack effect in atrium
• atrium wind cowls, automatic vents, ETFE
  roofing material, solar shading for summer sun
• sports hall wind cowls with heat recovery
• High levels of daylight using light shelves and
  solar chimneys
• Minimise solar heat gain with building
  orientation, design and solar shading
• Insulation and green roofs
• Use thermal mass to decrease heating load
• Reduce areas of hard standing, increase
  landscaping
• Earth tubes, for day and night cooling

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CARBON PERFORMANCE TARGETS REFURBISHMENT

• New schools defined as school with new build
  environment gt 70 of total area.
• Meeting 27kgCO2/m2 represents a 25 carbon
  reduction against 2002 Building Regulations
• 60 reduction of this 34 kgCO2/m2 means 14
  kgCO2/m2
• Software modelling required to ascertain Part L
  compliance can demonstrate this.

If 60 reduction is achieved, carbon performance
targets easily met

• Standard form payment mechanism for refurbished
  schools the target can be reviewed.

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BREEAM EXCELLENT
BREEAM Excellent

• Achieving BREEAM Excellent requires the following
  mandatory elements, most of which TCCC is meeting
  already
• commissioning programme
• considerate constructors programme
• building user guide
• high frequency lighting
• microbial contamination
• reduction of CO2 emissions (EPC 40)
• sub-metering of substantial energy uses
• LZC technologies
• water consumption reduced
• water meter
• storage of recyclable waste
• mitigating ecological impact.

Due to the 60 carbon reduction target, a lot of
credits are possible in energy, which is
preferentially weighted in BREEAM. Therefore,
could consider Excellent.
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• MEASURES TO CONTROL ENERGY

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ENERGY USE

• Energy consumption use in schools

• 75 heating HWS
• 10 lighting
• 9 other
• 4 catering
• 2 computer

Carbon Trust guide 343
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ENERGY USE

• Most schools energy is supplied in two forms
  fossil fuel and electricity
• Lighting is responsible for nearly 50
  electricity costs
• Catering, fans pumps making up the rest
• ICT growing consumer of electricity

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REDUCE ENERGY CONSUMPTION

• Metering
• Metering of gas, water, heating, cooling, power
  and lighting (smart metering)
• CO2 Monitoring
• Monitoring occupancy levels, fresh air control
  reduce energy consumption
• Improves occupancy comfort levels
• Installation of Power factor correction
• Simple controls Caretaker Joe

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O C C U P A N C Y C O N T R O L

• Lighting/dimming (Pir/infrared)
• Ventilation/heating control
• Simple switching/avoid duplication
• Do not over specify control specification

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TESTING AND COMMISIONING

• Adequate time in programme
• Allow for seasonal commissioning
• Pressure testing
• Develop TC Programme
• Rehearse to the contractor

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SUMMARY OF PRESENTATION

• Address Part L and Consequential Improvement as
  early as possible
• Look to improve the Building Services rather than
  building fabric minimise cost!!
• Specify appropriate Building Control Systems
• Address the sustainability and carbon targets
• Finally know what you are taking on

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• Address Part L and Consequential Improvement as
  early as possible
• Look to improve the Building Services rather than
  building fabric minimise cost!!
• Specify appropriate Building Control Systems
• Address the sustainability and carbon targets
• Finally know what you are taking on