Transcript 11. Product Group buildings construction

PRIMES
product group
sustainable construction
Presented by
PRIMES
Overview
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Environmental impacts
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Legal Background
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Recommended GPP criteria
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Good practise example
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Useful Links
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PRIMES
Public Procurement and products with high
environmental leverage
PRIMES
Environmental impacts by the
construction sector
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The consumption of energy for heating, cooling,
ventilation, hot water, and electricity, and resulting CO2
emissions
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The consumption of natural resources
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The consumption of fresh water resources both during
construction and during the use phase
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Emission of substances harmful to human health and the
environment during the production or disposal of building
materials leading to air and water pollution
PRIMES
Environmental impacts by the
construction sector
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Negative health impacts on building users due to building
materials containing dangerous substances
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CO2 emissions resulting from the transportation of
construction materials and products
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CO2 emissions resulting from the transportation of
construction materials and products
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Waste production
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The construction process as a system
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GPP criteria to approch environmental impacts
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Maximise the energy performance of buildings
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Ensure high energy efficiency standards for heating, cooling,
ventilation and hot water systems, and electronic devices
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Use guaranteed performance contracts with Energy Service
Companies
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Encourage the use of localised renewable energy sources (lRES) and high efficiency cogeneration
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PRIMES
GPP criteria to approch environmental impacts
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Include a systematic Life Cycle Approach (LCA) for building
materials
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Encourage the use of sustainably harvested and produced
resources and construction/insulation materials
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Encourage the installation of high-end water saving technologies
and reduce the use of freshwater during the construction process.
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Encourage the use of non-toxic building materials by also building
upon the availability of renewable raw materials based construction
materials
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PRIMES
GPP criteria to approch environmental impacts
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Encourage the use of substitute substances/
materials for dangerous building materials by also
building upon the availability of renewable raw
materials based construction materials
Use energy efficient vehicles for transportation and
on the building site
Apply effective supply chain management systems
Minimise waste production and ensure propoer
waste management of demolition and construction
waste
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PRIMES
Directive 2002/91/EC
European Directive on Energy Performance of Buildings
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All Member States to develop calculation
procedures for determining energy performance
in accordance with a number of requirements
Method for calculating energy performance and
standards set free to select, within the general
framework
No single methodology, no indicator and no
performance benchmark for energy
performance applicable in all countries
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PRIMES
Directive 2010/31/EU (recast)
European Directive on Energy Performance of Buildings
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As of 31 December 2020 new buildings in the EU will have
to consume 'nearly zero-energy'.
Public authorities that own or occupy a new building should
set an example by building, buying or renting such 'nearly
zero-energy building' as of 31 December 2018
A harmonised calculation methodology to push-up MS
minimum energy performance requirements towards a costoptimal level
A more detailed and rigorous procedure for issuing energy
performance certificates will be required as well as control
systems to check the correctness of performance
certification
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PRIMES
Directive 2006/32/EC
European Directive on Energy End-Use Efficiency and Energy
Service
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Role of public procurement in achieving the
envisaged reduced energy consumption by
tendering for highly energy efficient
technologies mentioned
Influence on the selection and purchase of
energy using devices in buildings such as
electric pumps, lighting systems, IT equipment
and white goods
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PRIMES
Cost considerations
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Over life span of a building, running and maintenance costs
will exceed the initial costs of construction.
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Through the design process the largest impact can be made
on the 85% figure.
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Life cycle costing as standard procedure for construction
work allows an assessment (in monetary value) taking into
account all costs
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A variety of European and national LCA-tools exist
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PRIMES
Recommendations: Subject Matter
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Include sustainability aspects within the subject matter
Example:
Construction of new energy efficient
[insert building type], using environmental
friendly construction materials and products
or
Renovation of building stock of [insert
building type] to high energy efficiency
standards using environmental friendly
construction materials and products.
(‚GPP Training Toolkit‘)
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Recommendations: Technicial Specifications
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Energy consumption standards: The overall [net/final/primary]
energy demand of the building (including heating, cooling, hot water,
ventilation and electricity) is [X] % lower than the maximum defined
in [insert relevant national legislation].
Energy efficiency training: A training session must be given to the
building manager on the energy efficient use of the building following
the completion of construction/renovation works. The bidder must
outline the content of the training.
Localised RES (I-RES): A minimum of [X] % of [net, final or primary]
energy demand must be provided by localised renewable energy
sources (l-RES). L-RES means renewable energy source generating
capacity within the building site itself (e.g. solar panels, biomass
boilers, wind turbines etc.)
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Recommendations:
Award Criteria
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Award will go to “Most economically
advantageous tender (MEAT)”
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Innovative energy efficient building
services: submitting of specific proposals for achieving energy
efficient lighting, heating, cooling, high-efficiency cogeneration
and ventilation in the building evaluating the estimated energy
savings and the use of passive components
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Lowest energy consumption and use of localised RES sources
and/or high efficiency cogeneration: Points will be awarded on
the basis of a sliding scale between the best and worst bids
PRIMES
Recommendations: Further Ideas
PRIMES
Ecolabels
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No overall labelling system for
environmental/sustainable construction exists
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Ecolabels exist for a variety of construction
materials and products: the environmental
criteria underlying an ecolabelling scheme can
provide valuable assistance in developing
environmental criteria and the labels
themselves constitute easy ways of
demonstrating compliance with those criteria
PRIMES
Retrofitting of buildings
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Retrofitting an existing building can often be more cost-effective
than building a new facility.
Important to initiate energy conservation retrofits to reduce energy
consumption and the cost of heating, cooling, and lighting buildings
Recommendations:
 Recommission all energy and water systems to determine they are
operating at optimum performance; then upgrade energy and water
systems to minimize consumption.
 Evaluate occupancy patterns, then apply daylight, HVAC and
lighting sensors in appropriate locations. Incorporate energy
efficient lighting into the project as appropriate for the tasks and
functions of the spaces.
 Develop a plan to optimize the recycling and reuse of demolition
debris and construction waste to minimize waste sent to landfills.
PRIMES
Retrofitting of buildings
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Determine if natural ventilation and fresh air intake are feasible
alternatives to reduce heating and cooling loads.
Investigate renewable energy options that can offset the purchase
of fossil fuel-based energy.
Consider solar shading devices for windows and doors, including
those that generate electricity by photovoltaic (PV) devices.
Replace existing windows with high-performance windows
appropriate for climate and exposure. If building requires security
upgrade, evaluate blast resistant windows and films. If building is
located in a high noise area, evaluate windows that also include
adequate exterior to interior noise reduction.
Analyze the benefits of distributed generation if the building is in a
campus cluster or can share the on-site energy produced with
adjacent buildings.
PRIMES
Retrofitting of buildings
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Balance the project's sustainable goals with its security goals
including protecting the building and its occupants from natural and
man-caused disasters.
Certain site renovations can improve the energy performance of the
building including reducing the heat island effect.
Determine if a cool roof or green roof are cost-effective ways to
reduce heat island effect and stormwater runoff.
Employ Energy Star and/or a green building rating system for
existing buildings like LEED for Existing Buildings: Operations and
Maintenance (LEED EBOM) or Green Globes for Existing Buildings
to gage the building's level of performance.
For historic buildings, update systems appropriately to maintain a
balance between the need for energy and water savings with the
character of the original building fabric.
PRIMES
Retrofitting of buildings
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Take the opportunity afforded by the building renovation to
incorporate sustainable operations and maintenance practices and
switch to green cleaning products and methods.
To ensure a newly renovated building continues to perform as
designed, measure the performance of the building regularly.
If not already metered, plan on installing meters for electric, gas,
water and other utilities. Smart meters and submeters are
preferable to monitor real time consumption, control demand and
increase tenant accountability
PRIMES
Passive House Concept
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Sound and relatively low-cost method to achieve significant
energy savings in residential and other buildings
Achievable for a wide range of building types (including renovation
work).
It is a good option to include the Passive House specifications as a
minimum requirement in the construction project.
Basic design principles :
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reduce heat loss (e.g. insulation)
reduce electricity consumption (e.g. intelligent lighting systems)
utilise natural solar heat (e.g. window area sun orientation)
display and control energy consumption,
select the energy source (e.g. solar panels, CHP, biomass boiler)
PRIMES
Other initiatives/projects
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SCI-Network
connects public authorities looking to procure innovative and
sustainable solutions within their construction projects. It is a
European network of public authorities working together to
explore European best practice in construction procurement, and
identify how best to encourage innovation and sustainability.
PRIMES
Other initiatives/projects
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BUILD-UP
Webportal is intended to
 reaps benefits of Europe's collective intelligence on energy
reduction in buildings
 brings together new practitioners and professional associations
motivating them to exchange best working practices and
knowledge and to transfer tools and resources
 provides public authorities staff with access to many resources
on the legislation, toolkits and guidelines produced by other
cities, regions or countries
 A way to share expertise with peers
PRIMES
Other initiatives/projects
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The Covenant capaCITY platform has an entire learning &
trainer module on GPP as a means to implement SEAP actions
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Once you register you have access to a wealth of information
regarding GPP, buildings etc. for the set-up or revision of
SEAPs
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Website: www.covenant-capacity.eu
Source: © www.covenant-capacity.eu
PRIMES
Example: Tender Overview
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Subject matter: Construction works for a primary school building
meeting the passive-house standard
Technical specifications: The primary energy demand of the
building should be at least 10% lower than the required minimum
standard for new buildings based on the standards of [X]
Selection criteria: The technical capability of the bidder for building
a bridge in a protected area must be demonstrated, for example by
having a certified environmental Management System (EMS) for
such projects
Award criteria: Additional points will be awarded for the
percentage of final energy demand provided by localised renewable
energy sources [include acceptable RES], above the minimum
standard set in the technical specifications. [Following: specification
of the assessment scheme (e.g. bonus system]
PRIMES
Example: Tender Overview
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Award criteria: Additonal points will be awarded for lowest energy
consumption and use of localised RES sources and/or high
efficiency cogeneration
Award will go to most economically advantageous tender (MEAT)
Preddvor, Slovenia
Best practise example
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Introduction
Seventeen years ago, it was decided that appropriate
measures would be taken to ensure that the Municipality of
Preddvor would become as energy independent as possible
At the end of 2011, Preddvor Municipality adopted the
“Local Energy Concept”
Decision to invest in a new, low-energy kindergarten facility to
improve energy efficiency:
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Construction of a low energy building using environmentally
friendly materials, emphasising the use of wood products and
renewable energy. The goal was for the kindergarten facility to
become a passive building with an annual heating demand of less
than 15kWh/m² (energy class: B1)
Preddvor, Slovenia
Best practise example
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Technical Specifications
The orientation of the kindergarten to maximise natural light and the
roof had to be suitable for solar module installation and energy
production
Strict technical specifications given for the maximum allowed heat
transfer coefficient (k 0.35K/m2 K) and for the characteristics of
external and internal construction materials (e.g. triple glazing)
Local heating specificities (heating through wooden biomass) to be
taken into consideration during construction
Local Slovenian legislation regarding heat transfer, solar radiation
transparency (>50%) and the use of renewable energy sources
(>25% of total heating) to be respected
Preddvor, Slovenia
Best practise examples
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Results
Natural materials used to construct most of the building. More
specifically, wood from Larix sp. (larch tree), built-in wooden
doors and windows with triple glazing
Kindergarten heated by biomass from a central boiler in
Preddvor
Central ventilation system installed (air recuperation efficiency
is over 80%)
96.7 kW photovoltaic system set up on the roof
Received environmental awards: Gold medal for the Most
Energy Efficient Public Building
The Finance newspaper & Slovene EKO Fund Award for
Environmentally Friendly Company of the Year 2012 in
Slovenia
PRIMES
Further resources
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Procura+ criteria on building and construction renovation
http://www.procuraplus.org/fileadmin/files/Manuals/English_manual/Proc
ura__Manual_Chapter6f_-_Buildings.pdf
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GPP criteria:
http://ec.europa.eu/environment/gpp/pdf/toolkit/construction_GPP_prod
uct_sheet.pdf
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Sustainable construction and innovation through procurement
http://www.sci-network.eu/
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BUILD-UP: EU portal for energy efficiency in buildings
http://www.buildup.eu/
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INSPiRe project on innovative and energy-efficient buildings:
http://www.inspirefp7.eu/
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Covenant Capacity: http://www.covenant-capacity.eu/ (after registering
free access to training incl. Buildings modules)