Post on 08-Feb-2016
description
Sustainability Tools Amanda Gallagher, BRE Ireland, Dublin
Contents
Sustainability Tools• Developments & Masterplans• Buildings • Energy • Materials• Waste• Post Occupancy Evaluation
Sustainability Issues in the Built Environment
Site Selection
Planning & Design
Construction Building Operation
Demolition
Greenfield or Brownfield Site
Impact on Natural Habitat
Existing infrastructure (roads/energy/transport networks)
Proximity to amenities and populated areas
Economic centres/creation of jobs
Probability of Flooding
Noise Assessment
Stakeholder Consultation
Orientation
Low Carbon Design
Placemaking & Community
Water Conservation
Life Cycle Costing
Fitness for Purpose
Lighting
Heating
Ventilation
Infrastructure
Travel Plans
Material Specification
Site Ecology & Landscape Design
Flood Risk Prevention
Polluting Chemicals and Substances
Construction Site Impacts• Site Waste Management
• Energy & Water Use
• Transport Emissions
• Dust & Pollution
Considerate Constructors
Sustainable Materials
Recycled Aggregates
Local Labour/Workforce
Commissioning and Building Handover
Building User Guide
Energy Use
Water Use
Maintainability
Durability
User Controls
Occupant Satisfaction
Occupant Productivity (non domestic buildings)
Acoustic Performance
Recyclable Materials
Demolition Audits
Disposal of Materials
Avoiding obsolescence
Flexibility
Hazardous Materials
Why do we need specific guidance on sustainability?
• Definitions are not always that helpful in practice:– Sustainable buildings definition (SBTG):
“…as small an eco-footprint as possible, economic to run over its whole life cycle and fits well with the needs of the local community”
• Need to define what you want to achieve in your context
• Education, training and awareness raising
• Means of assessing design options and applications
• Level playing field for developers
• Showing the future direction of policy
How can sustainability tools help?
• Developers / architects / design teams:
– What is the range of issues to consider?– How are they linked together?– What standards and advice are out there?– What might decision makers expect?– What does good practice look like – marketing opportunities?– How can I do more – simple “wins”?– What might I have to consider in the future?
Sustainability Assessment Tools
Development
Tools
• Masterplanning/Developments– Sustainability Checklists– Greenprint– BREEAM Communities
• Buildings– BREEAM/Code for Sustainable Homes– LEED/Greenstar– Energy (SBEM/SAP, PHPP etc. etc.)– Environmental Design and Life Cycle Assessment Tool (ENVEST)– Materials (Environmental Profiles & Green Guide to Specification)– Construction site waste (Smart Waste)
• Post Occupancy Evaluation
Sustainability in Masterplans & Developments.
• Sustainability Checklists for Developments• Greenprint • BREEAM Communities
What can Sustainability Checklists cover?
• Site choice – Greenfield, destruction of natural habitat
• Development design and layout – Regional Sustainability Checklists / Climate Change Tool kits / DQIs
• Individual building performance – BREEAM / Ecohomes
• Elements of construction process – ICE Demolition Protocol
• Procurement– The OGC Achieving Excellence Procurement Guide
• Post-build operation and management– BRE/Carbon Trust / EST guides
… and any combination!
Scored sustainability checklist - question:Objective
Question 1.4 (2)
Mark for target reached:Targets Minimum 1
Good practice 2
Best practice 3
Minimum not met 0
0
(a) mark awarded for this question:
(b) Question weighting: 0.4
Total Question score: (a) x (b): 0
Justification
More than 50% of the roof area used for rainwater harvesting or green roofs; captured water used for irrigation and /or toilet flushing and/or washing machines
Links to the RSS/ IRF RSS) CC2 Climate Change, CC3 Resource use
Considered not applicable for this application:
To ensure that roof space is used productively to minimise water demand and manage water run-off on the site.
What percentage of the total roof area in the development is designed to allow the harvesting of rain water for re-use and/or is covered by green roofs?
See relevant local planning authority standard for minimum required.
50% of the roof area used for rainwater harvesting or green roofs
What we have learned in other work:
• Checklists are an increasingly common approach.
• SEEDA/BRE regional checklist recognised as part of the Sustainable Communities agenda – Egan Commission and SBTG recommended that it should be rolled out to all regions in England (extensive tailoring now underway in each region).
• Developers will not fill them in unless required to – must be a level playing field.
• Need to quantify what you want – or specify a process. Ecobuild conference reiterated this from both architects and developers. Level playing field issue again.
• Minimum, good and best practice scoring enable higher standards to be easily specified for more sensitive sites.
GreenPrint - Bringing it all together Climate Change
Resources
Transport
Ecology
Business
Placemaking
Community
Buildings
What is GreenPrint?• Methodology to maximise the
potential for sustainable communities• Workshop led approach involving the
whole stakeholder team• Bespoke – can be tailored to
individual client needs• Sets out clear understandable
sustainability objectives and benchmarks
• Prioritises sustainability issues most important to a development
• Independent appraisal of final plans• Provides an overall GreenPrint Score
and Rating
BREEAM Communities
• Similar to Greenprint but ‘fixed’ criteria. Not Bespoke• Awarded a BREEAM Rating and certified by the BREEAM
Office.• Planning tool for developers and local authorities.• Measures: -
– Climate Change & Energy– Community– Placemaking– Buildings– Transport and movement– Ecology– Resources– Business
Buildings
• BREEAM• Code for Sustainable Homes• LEED• Greenstar
What is BREEAM?
• BRE Environmental Assessment Method
• Certification scheme
• Measure of sustainability
• Independent & credible
• Holistic
• Customer focused
• Credits and evidence based
BREEAM Categories
• Management
• Energy
• Water
• Land Use and Ecology
• Health and Wellbeing
• Transport
• Materials
• Waste
• Pollution
Scoring
• Management
• Health and Wellbeing
• Energy
• Transport
• Water
• Materials
• Waste
• Land Use and Ecology
• Pollution
Asse
ssm
ent I
ssue
s
BREEAMScore
PASS 30% GOOD 45% VERY GOOD 55%EXCELLENT 70%OUTSTANDING 85%
Envi
ronm
enta
l Wei
ghtin
gs
Sing
le S
core
Cate
gory
Sco
res
Mandatory Credits (Minimum Standards)• Aims:
– To avoid that a building achieves an Excellent rating, but does not achieve compliance with straightforward BREEAM issues e.g. storage of recyclable waste or installation of a water meter.
– Comparability across different schemes and BREEAM buildings
• The higher the BREEAM rating the more mandatory requirements there are and progressively harder they become.
Innovation Credits
• Additional recognition for ‘innovation in the field of sustainable performance’, above and beyond what is currently recognised and rewarded in BREEAM
• Two ways of obtaining Innovation Credits:
1. By meeting exemplary level performance requirements for an existing BREEAM issue
2. Where an application is made to BRE Global to have a particular building feature or process recognised as ‘innovative’
BREEAM 2008
2008 BREEAM Manualsavailable on the BREEAM Website
http://www.breeam.org
Code for Sustainable Homes
• The Code for Sustainable Homes is an environmental assessment method for rating and certifying the performance of new homes
• Assessment is a two stage process – design and post construction• The Code provides an all-round measure of sustainability against
nine categories of sustainable design• A Code rating became mandatory for all new build homes from 1st
May 2008 and has been operational in England since April 2007– A code assessment results in a rating of between 1 and 6 and a certificate is
provided with the dwelling– Non-assessed dwellings will be accompanied by a nil-rated certificate
Mandatory Performance Levels
• The Code covers nine categories of sustainable design– Energy/CO2– Water– Materials– Surface Water Runoff– Waste – Pollution – Health and Wellbeing– Management– Ecology
• Six of these contain mandatory performance levels• Energy and Water have increasing minimum standards for each Code
level
Mandatory Performance Standards
• Entry Level requirements for:– Energy – Water – Materials – Surface Water run-off– Waste
Failure to meet the mandatory requirements will result in a zero rating
BREEAM International
UKRep. IrelandThe NetherlandsDenmarkPolandNorwayTurkeyIcelandRomaniaSpainSwedenIsraelAbu DhabiAlgiersDubai
Czech RepublicFranceGermanyHungaryItalyLuxembourgLebanonMalaysiaMoroccoBelgiumSwitzerlandPhilippinesPolandQatarRomaniaUSA
LEED
• US Green Building Council• Green Building Certification Scheme• Credit based Assessment Method• Awards performance in
– Sustainable Sites – Water Efficiency – Energy & Atmosphere – Materials & Resources– Indoor Environmental Quality – Locations & Linkages– Awareness & Education– Innovation in Design– Regional Priority
Greenstar
• Green Building Council Australia (GBCA)• Environmental Rating System for Buildings in Australia• Measures: -
– Management – Indoor Environment Quality – Energy – Transport – Water – Materials – Land Use & Ecology – Emissions – Innovation
Energy
• SBEM • SAP• Passive House Planning Package (PHPP)
SBEM
SAP
PassivHaus – the technical definition
• The design heat load is limited to the load that can be transported by the minimum required ventilation air
10 W/m2 heating load calculation is quite simple:
1 m³/(m²h) × 30 °C × 0.33 Wh/(m³K) = 10 W/m²
minimum ventilation rate of 0.4 ac/h is required for indoor air quality, that results in at least 1 m³/(m²h) being delivered by the ventilation system
maximum heat input provided via the fresh incoming air
specific heat capacity of the air
Passivhaus Planning Package (PHPP)
ENVEST 2
• Environmental Design & Life Cycle Assessment Tool• Whole Life Costing
– Environmental Design Vs Financial Impact
• Predicts Environmental Impact– Materials– Heating– Cooling – Building Operation
Materials : Measuring environmental impact
SMARTWaste
• Waste benchmarking• Waste reduction• Pre-demolition audit• Reuse and recycling site locator • Related training, consultancy and guidance
Post Occupancy Evaluation – Measuring Sustainability Post Construction
Energy, water and sustainability audits– Monitoring and recording consumption levels to allow benchmarking
BREEAM assessments– Determining if design stage commitments have been made
Design Quality Method– Evaluating architecture, environmental engineering, user comfort, whole
life costs, detail design and user satisfaction
Occupant experience– Questionnaires, focus groups and interviews to examine how the
occupants interact with the building
Financial analysis– Cost benefit analysis
Further Information
• South East of England Development Agency Example Checklist on line - http://www.sustainability-checklist.co.uk/index-17.htm
• BREEAM and Ecohomes www.breeam.org/
• Regional Sustainablity Checklist for developments www.wwf.org.uk/filelibrary/pdf/regsust_checklist.pdf