ACV de Edificação – Mais fácil e perto de você (Portuguese)

Quantificar sustentabilidade ambiental foi o desafio que deu origem à empresa eTool. Desde 2010, os amigos e engenheiros australianos Richard e Alex desenvolvem o software eToolLCD para realizar cálculo de impacto ambiental na construção e promovem uso da metodologia Avaliação de Ciclo de Vida (ACV) para garantir performance ambiental genuína nos projetos em que participam.

Desde então, a equipe da eTool cresceu e expandiu da Austrália para a Europa e agora também para as Américas. A empresa já completou mais de 200 análises de projetos residenciais, comerciais e de infraestrutura, prestando serviço de consultoria ou fornecendo solução de software para a equipe de projeto.

O software eToolLCD é totalmente web-based, atende às normas ISO 14044 e EN15978 (específica para ACV de edificação), possui atualmente mais de 1.500 usuários ao redor do mundo e pode ser utilizado para obter pontos na certificação Green Star, BREEAM, LEED, entre outras.

Eu trabalho com a eTool desde 2012, onde me especializei em Avaliação de Ciclo de Vida e fui líder da equipe responsável por conduzir os estudos técnicos e colaborar com a equipe de desenvolvimento de software. Depois de morar cinco anos na Austrália, voltei para o Brasil para dar continuidade ao trabalho que iniciei em 2014, mas agora em definitivo para desenvolver a eTool Américas. É um grande desafio e também uma realização pessoal e profissional trazer para o Brasil uma metodologia que ainda não é muito utilizada, mas tem um grande potencial para auxiliar equipes de projeto a reduzir o impacto ambiental das construções e também demonstrar viabilidade financeira por meio da Análise de Custo do Ciclo de Vida.

Somos uma empresa apaixonada em projetar melhor e garantir bem estar social e harmonia com o meio ambiente. Estou entusiasmado para trabalharmos juntos.

Redução do Impacto do Ciclo de Vida do Edifício – LEED (Portuguese)

Análise de Ciclo de Vida (ACV) é uma metodologia usada para avaliar os impactos ambientais associados a todas as etapas da vida de um produto ou serviço. É uma abordagem holística que engloba a extração dos materiais, processamento, fabricação, distribuição, uso, reparo, manutenção, descarte e reciclagem ao fim da vida útil. A ACV quantifica os impactos ambientais e compara a performance por meio da funcionalidade do produto ou serviço. A performance de um prédio comercial, por exemplo, pode ser avaliada por meio do impacto ambiental por m2 de área locável por ano (kgCO2/m2/ano). O estudo de ACV permite identificar as potenciais áreas para aumento de performance e redução de impacto ambiental, podendo também incluir recomendações de melhoria para a equipe de projeto. A ACV é regulada pelo padrão internacional ISO 14044 (e EN15978 especificamente para edificações) e a aplicação na área de construção civil é utilizada mundialmente para promover desenvolvimento sustentável.

Na certificação LEED, o objetivo do crédito Redução do Impacto do Ciclo de Vida do Edifício é otimizar o desempenho ambiental de produtos e materiais e permite obtenção de até três pontos. Apesar da metodologia permitir avaliar impactos relacionados a todo o ciclo de vida do projeto, este crédito LEED (opção 4) tem o foco apenas na estrutura e recinto do edifício, durante período de 60 anos. Ao comparar a performance do projeto proposto com o modelo de referência (Baseline), a equipe de projeto deve demonstrar redução de impacto de no mínimo 10% em pelo menos três categorias de impacto (por exemplo: aquecimento global, depleção da camada de ozônio e eutrofização).

A eTool, empresa Australiana especializada em avaliação do ciclo de vida de todo o edifício, desenvolveu o software eToolLCD que atende aos requisitos técnicos da norma ISO 14044 e pode ser utilizado na certificação LEED. A eTool iniciou operações em 2012, já completou mais de 300 análises internacionalmente e é pioneira no uso de ACV para certificação na Austrália (Green Star). Atualmente, está expandindo os serviços na Europa (BREEAM) e nas Américas. Os projetos LEED que utilizaram o software eToolLCD incluem: King Square 2 – Cundall (Austrália), Wildcat Building – Arup (Dinamarca) e ENOC Tower – AESG (Dubai).

“A única forma de garantir redução de impacto ambiental é quantificar a performance ao longo da vida útil do projeto e a metodologia de ACV foi desenvolvida para auxiliar na tomada de decisões. Este crédito LEED será muito importante para as equipes de projeto trabalharem de forma ainda mais integrada e o software eToolLCD facilita muito esta análise”, afirma Henrique Mendonça, engenheiro da eTool que está de volta ao Brasil depois de passar cinco anos na Austrália e se especializar na prática de ACV de toda a edificação.

Saiba mais sobre nossos projetos recentes aqui.

 

 

LCA – More than just easy credits

Since being awarded IMPACT compliance in Christmas 2015 eTool now have many clients successfully using eTool on either a consulting basis or as LCA software providers.  With an IMPACT compliant LCA they can guarantee the two bonus LCA Materials credits in Breeam New Construction 2011/2014. These credits are awarded as a bonus to the Green Guide materials credits and awarded for completing an LCA and reporting on the results. 6+1 credits can also be achieved under Breeam Fit-out/Refurbishment/International, up to 23 credits in HQM and 3 under LEED.  The tool can also be used to assist in life cycle costing Man 2 credits, and Mat 06 Resource Efficiency.  The Bre are trying to encourage uptake in LCA and for the time being the credits can be applied at any stage of the design – effectively points for trying.

Below are just some of the clients who we have been working on LCAs with to date.  Although the primary motivation is often Breeam related, LCA is also providing some fantastic learning outcomes for design teams.

etoolclients

“We have been using eToolLCD for the last year and have completed 3 certified assessments.  As with any new software there is a learning curve involved but the training and level of support has been excellent and we can now complete an IMPACT assessment on our project in a couple of days (depending on complexity).  This has enabled us to give our clients and design teams valuable information on the environmental impacts of design options as well as giving an additional 2% to the projects BREEAM assessment once the eToolLCD model has been certified.” David Barnes, Volker Fitzpatrick 

Find out more about our recent projects here.

 

 

GBCA Feedback

eTool drives on innovation and forward thinking to bring solutions and help us mitigate environmental impacts. We have been working closely with GBCA since 2013 when LCA was included as an Innovation Challenge. Since completing its first LCA later that year, eTool has become a leader in providing consultancy and software services related to LCA for the Green Building industry.
There are now over 50 projects that used eToolLCD to achieve the Materials Life Cycle Impact credit and technical experience was developed internally at eTool and amongst software users.
The construction industry is moving to LCA for environmental decision making, and recognising that the only way to prevent adverse trade off is to use life cycle assessment within a life cycle design process. Following this global trend, eTool thought it was very important to provide feedback when GBCA opened for public consultation. Here are some of the key points included:
• Consideration of functionality in the principles, and use of LCA as early as possible to inform the design process.
• Normalisation and weighting should be considered to prevent negative trade offs between environmental impacts and guarantee whole of building performance.
• Use of LCA model to calculate GHG, Water and other life cycle impacts because it is very flexible, it delivers good environmental outcomes and it is aligned with global trend, which simplifies the maintenance of GS calculator tools.
We look forward to the advancements of LCA use within the Green Building industry so please stay tuned for more news on this soon.

 

Validated Templates in eToolLCD

What is a Validated Template?

The eToolLCD software allows you to conduct a life cycle assessment of a whole building quickly and accurately. To quantify the environmental impacts of a whole building over its whole life is not a trivial exercise. eTool has made the process manageable. Conducting a Life cycle assessment is becoming a normal part of the design process.  This is made possible by the depth and breadth of templates available in the eToolLCD Template Library.

A Template is the term we use to describe the logical grouping of elements, e.g. a concrete block wall.

Within the Template Library, there are private, public and validated templates. As a user, you can maintain the privacy of your templates if you choose to. However, we encourage you to Request Validation of your templates. This will initiate a process where an eTool Certifier will review the template and once it is has passed an QA check, it will be Validated. The template then becomes Public and Validated. It will show the Thumbs Up symbol alongside the title when viewed in the Library browser.

Screenshot of eToolLCD Template

Screenshot of eToolLCD Template

What is involved in the process of Template Validation?

The key points in the Quality Assurance process we use to validate templates include;

  • Read the Description (under the Details tab) and follow any links to external documents or sources of information. The creator of the template should include enough information in the Description to allow an independent verification of the material types and quantities and explain any formulas used
  • Check the material quantities in the Template, comparing against supplied references and or similar Templates in the Library
  • Check the overall impact of the Template compares reasonably to functional equivalents
  • Check the Library Template Quantity by inserting the template into a test design and confirming the calculated quantities behave as expected
  • Work through the details of any checks that fail with the template author until the Template passes all checks

The eToolLCD Template Library provides a rich knowledge resource to all of our users. We encourage you to create new Templates where you see a gap in the Library and to get these templates Validated.

5 Ways to add value to your services using Life Cycle Design

Life Cycle Design (LCD) has quickly become the go-to method for defining sustainability in buildings in governments, green building councils and organisations around the world. It is considered best practice for good building design by the International Standard Organization (ISO 14044) and is a powerful methodology for ensuring genuinely sustainable and high performance outcomes.

This article and video recording provide an overview of Life Cycle Design and explain five ways to add value to your services using LCD. Be inspired by how LCD has been incorporated in different sectors and projects, and how key stakeholders have taken it on board.

Some of the topics covered include:

What is Life Cycle Design and the methodology
The importance of green buildings and measuring building environmental performance
Green Star projects – general overview
LCA as a required part of ESD tender documentation
ISCA and use of LCD as an integrated desgin approach
LCD for regulatory approvals
Marketing and sales campaign
eToolLCD software 

 

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LCA for Infrastructure projects

After completing the LCAs for Brookfield Multiplex on the New Perth Stadium, for LendLease on the Waterbank – Infrastructure and Public Domain Area (IPD), and currently working on the NorthLink WA Southern Section with John Holland, eTool is excited to share with you how LCA can be used for Infrastructure project.

On this video recorded during our last webinar, LCD Engineer and Business Development Manager Henrique Mendonca shows why Life Cycle Design adds value to an infrastructure design process and how it can be done using eToolLCD software. It also provides an overview of potential IS credits (Infrastructure Sustainability) using Life Cycle Assessment by integrating materials, energy, water, waste, management and innovation in a single LCA model.

 

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Marketing & Selling Sustainability

Maximise the value of investing in sustainability by ensuring your marketing and sales is up to speed.

Marketers seeking to sell sustainability face the great values-action gap – the difference between what consumers say they want and what they go on to actually do.

LCD Engineer and Business Development Manager Henrique Mendonca explores the best sales and marketing strategies for selling sustainable buildings.

Topics covered in this video include generic introduction into marketing and sales of sustainable buildings with strategies and mechanisms for your team to capitalise on the true potential. We include generic eTool marketing reports and go explore a summary list of project specific sales and marketing messages and strategies.

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Closed Loop Recycling and EN15978 – how does it work?

I’ve heard its complicated why is that?

We need to reward recycling but also have to be careful not to double count the benefits (at the start and end of life for example).  The approach under EN15978 is as follows:

  • to reward “design for deconstruction” as the key driver that determines the net results over the whole life of a building
  • to allocate economically, so if a product is a waste product at the end of the buildings’ life (there is no market for it, so it costs money to remove it from site rather than having some sort of scrap value) then any benefits associated with recycling that product are picked up by the next person who uses it.  So essentially, recycled timber is all rewarded at the start of the building’s life.  Recycled aluminium is all rewarded at the end (in net terms)

Allocation of reused products from other industries are also done economically, one example of this is recycled fly ash or blast furnace slag in concrete.  Because Blast Furnace has some value, it’s not as attractive environmentally as fly ash

The rules for recycling allocation under the EN15978 methodology were initially somewhat mind-boggling for me.  To understand them you will  likely need to take a number of re-visits and you should try to wipe out any preconceptions you may have on recycling.

So how does it work?.

Lets start with what is included in the scope of En15978 first,

boundary

Note that Module D is actually a form of “System Expansion” and one could argue is outside of the life cycle of the building.

Before we look into recycling allocation further we also need to understand a few definitions.

Recycled content is the proportion of recycled material used to create the product, the global industry average recycled content of aluminium today is approximately 35%. This means that in 100kg of aluminium 35kg comes from old recycled aluminium and 65kg comes from new raw material.

Recycling rate is the proportion of useful material that gets sent back into the economy when the product comes to the end of its life. The global industry average recycling rate of aluminium today is approximately 57%. This means that in 100kg of waste aluminium 57kg will be recycled into new aluminium products and 43kg will be sent to landfill.

Closed loop recycling, whereby a product is recycled into the same product (e.g. steel roof panel recycled into steel reinforcement).  The loop is closed because when the steel product comes to the end of its life it can be recycled into a new steel product (theoretically this can happen continually forever).  Closed loop is more straightforward to calculate as the emissions are directly offset by the new product that would have been required to be made from scratch.

Open loop recycling is when the product is used to create something new (e.g. old plastic bottles recycled into carpet).  The loop is open because the plastic now in the carpet required other material inputs to create the carpet and cannot be recycled further (if a process is developed that can continually recycle the plastic carpet then it becomes closed loop). We use economic allocation to understand the impacts that are being offset.

Now lets focus on a closed loop recycling example of a standalone 1000 kg of ‘General Aluminium’ modeled in eTool.  Under EN15978 scope impacts under module D – Benefits and loads outside the system boundary are quantified.  This includes closed loop recycling which is not directly related to the actual physical boundary or life cycle of the building.

The life cycle stages for the aluminium are shown below

alum recy 1

Kg CO2e by LC stage for 1000kg of general aluminium 

Hang on, the impacts are bigger for the 100% recycled content option???

Well, there is an initial saving in the product stage of 18,280 kg CO2e from using 100% recycled content aluminium versus using a 100% raw material. The no recovery option also gets a small advantage for transport of waste (C2) because landfill sites tend to be closer to a building than recycling sites on average. The no recovery option is also (very slightly) penalised for disposal impacts, if the aluminium is recovered it has 0 disposal impacts because it is sent to the recycling plant and these impacts are counted in the A1-A3 stage of the new aluminium product. The interesting result though is in the closed loop recycling.  We have a credit applied to the aluminium that is recovered and put back in the economy. This is effectively offsetting the assumed extraction requirement for the new aluminium to be used in the (aluminium) economy – for example in the next building.  Likewise aluminium that is not recovered causes a higher net demand for new aluminium.  To determine the ‘credit’ or ‘penalty’ at the end of the building’s life, the net increase in new aluminium required due to the use of the aluminium in the building is calculated.  In the 100% recycled content, 0% recovered the material is penalised by the equivalent mass of new aluminium which will need to be extracted to supply the next building.

Hmmmmmm…

Yes it may seem counter-intuitive but try to think of the world aluminium economy as a single life cycle entity.  If everyone used only 100% recycled aluminium that has 0 end-of-life recycling rate (ie it ends up in landfill) then we would soon run out of recycled aluminium available.  We would have to go back to using raw aluminium (maybe even start digging it back out from landfill!).  By encouraging recovery of the aluminium EN15978 is trying to discourage the overall extraction of the raw material.

O.K. That wasn’t too bad

So far so good but it gets trickier! Lets imagine we have fully recycled content and fully recovered aluminium,

Well you get the best of both worlds – reduced product stage and closed loop credits right?

Wrong!  Here is what happens….

alum recy 2

Kg CO2e by LC stage for 1000kg of general aluminium 

The minus CO2e credit at end of life can not be applied in this instance because you are already using 100% recycled aluminium. There is no material extraction in this case to offset and your end-of-life credit is 0. You don’t get penalised for the added extraction for the future building but you don’t get credit for it because that has already been given in the product stage. Under EN15978 there is actually a very similar amount of carbon associated with a 0% recycled/100% recovered aluminium scenario and a 100% recycled/100% recovered aluminium.

Whoa, that’s deep.

Its a tricky one and there is certainly an argument to say this is not encouraging the right behaviour but the emphasis on end-of-life treatment means that the impacts are accounted for and credit is given without double counting.

So what do we take from all of this?

Recycling content and rate is an important consideration in buildings but it is no silver bullet. Every little helps in sustainability though. Focus on the durability and deconstructability of the product over the recycled content which under EN15978 has a relatively small impact on the environmental performance.

*Note figures show are taken from eToolLCD September 2016

References: Recycling Rates of Metals, T E Graedel, 2011

France Sets Target to Legislate LCA for Residential Buildings by 2018

As we continue our transition towards more sustainable buildings and the imperative for carbon reduction continues to increase, the adoption of Life Cycle Assessment (LCA) has seen significant growth in the last decade in countries across the world. This adoption of LCA and design principles is both in the private sector and in Governments and local Councils as a way to ensure sustainable outcomes for their projects.

Life Cycle Assessment allows a designer to quantify environmental performance by looking at the impacts of each component of a building over its life span and most importantly, maximise design functionality. It enables you to see a full picture of the impacts of a project and identifies important hotspots for improvement that may have otherwise been overlooked. Since LCA is metrics based, it takes the guesswork out of sustainability and it’s no wonder that it’s quickly become the go-to method around the world for good building design.

One such country that is adopting the LCA methodology is France. They are working towards legislation for LCA of residential buildings by 2018 with their current focus on developing a voluntary label for energy and environment performance of new buildings. This is a big step forward because it does not only focus on energy but considers also the whole life-cycle and the environment in order to analyse the overall performance of the building. The aim is to pilot test the label in 2016-2017 with three main criteria: total energy use, total water consumption and CO2 emissions.

In order to assess the overall performance, the label may also include criteria on waste and public transportation. Seven working groups have been created to define this label and are working during the year 2015 on the following topics:
1) Life-cycle assessment
2) Environmental performance display
3) Environmental data
4) Economic stakes
5) Users
6) BEPOS (positive-energy building) and urban integration
7) Quality of use

The French energy efficiency policy is shifting from energy efficiency to overall performance (energy, environment, cost) and from the building scale to the district scale, with the need to take district energy into consideration.

This is yet more evidence of the global trend of LCA for the building industry and low carbon future.