Warehouse benchmark – LEED certified projects

eTool has developed a warehouse benchmark study in collaboration with CTE, a Brazilian Engineering and Consultancy firm, following the growing demand for Life Cycle Design services in LEED certified projects. 

The objective of this study is to share benchmarking results, deep dive on project hot spot areas, identify the best improvement strategies and assist design teams to set impact reduction targets at concept stage. 

LEED is helping drive the use of Life Cycle Assessment in construction and this study encompasses the final design of seven warehouses in Brazil that were assessed according to the Building Life Cycle Impact Reduction credit (MRc1 – Option 4 – Whole Building LCA).

The size of these projects vary between 62,818 m2 and 6,128 m2. Functional equivalence comparison also considered an average height of 13.6m.

The LCA credit is focused on project´s core, structure and enclosure materials impacts and the reduced scope includes the following life cycle modules:

  • A1-A3 – Product Stage
  • A4 – Transport
  • B1-B5 – Use, Maintenance, Replacement
  • C1-C4 – End of Life

eToolLCD software was used to conduct the study using Life Cycle Strategies North American v17 Life Cycle Inventory, compliant with EN15804 and ISO14044. The impact assessment method is CML – IA baseline V4.5. Service life is 60 years.

The construction scope covers the complete building envelope and structural elements, including footings and foundations, structural floors, columns, beams, structural wall assembly (from cladding to interior finishes), external doors, glazing, and roof assemblies. Estimated demolition impacts are also included. 

LEED certified warehouse (Brazil) – Carbon benchmark

Typical warehouse construction in Brazil uses reinforced concrete footing and piling, concrete slab, prefabricated concrete columns and beams, rendered concrete block walls, concrete panels or steel cladding, steel roof structure and insulated steel roof covering. 

The majority of the materials´impacts are associated with concrete and steel. The use of clinker replacement in cement is becoming more common and partial use of blast furnace slag was assumed in concrete mix for foundation and structural floors. Above average percentage of high recycled content in steel reinforcement was also considered as part of the benchmark model. These assumptions will help drive change in the segment as they become more common and are now considered typical practice for LEED certified projects.

LEED warehouse (27859 m2) – material inventory summary

 

LEED warehouse benchmark – EN15978 table (reduced scope)

Good structural design can significantly reduce embodied carbon, especially when different scenarios are tested at concept stage. Not only evaluating the impacts of materials but also the effect of different construction methods and technologies. eToolLCD users can quickly assess warehouse environmental impacts at concept design stage using whole warehouse template (component level) available in the software. Note this custom template is developed following LEED credit requirements and covers a limited scope. eTool encourages a whole of project analysis including all life cycle stages and full construction scope. This allows early stage analysis to help inform design teams test different scenarios and potential improvement strategies before progressing to detailed design stage.

For more information please contact us.

What will green buildings deliver in 50 years?

life cycle design

The construction industry is going through major changes under the Green flag. The greening of building stock and infrastructure becomes more than just an idea, but a strategical attribute in developing the future of the precincts and entire cities all over the world.

The net zero carbon target is ambitious and requires that all new buildings must be operational zero carbon by 2030, and all new and existing buildings must be net zero carbon by 2050.

Transition from building better to building sustainable.

Impact reduction target is a fundamental aspect of concept design and will assist the transition in sustainable construction. Designers and experts are used to discussing energy efficiency, or kWh/m2, but very rarely there is a carbon target (e.g. 100 kgCO2 per m2 of lettable area per year) set at an early project stage (A rough carbon budget for buildings was presented by eTool in a previous blog article).

We hear more often about passive design principles, energy-efficient equipment and storage, carbon-negative materials and a combination of onsite and offsite production of clean energy. Renewable energy generation is increasing at phenomenal speed and it’s transforming the whole economy,  reducing environmental impacts related to building’s operations and manufacturing of construction products.

At a district level, buildings are being thermally and electrically integrated with the community, and energy monitoring platform can track large groups of building performance, scaling up to whole district analysis. Targets climate funding is also helping retrofit existing buildings at municipal level and replicate success cases in other regions.

Different construction sectors define green design through different indicators.

Definition of the green design varies depending on specific needs but aims to accelerate the change towards a future in balance with the planet.

Tenants are motivated by the reduction of operational costs with energy and water bills, but it can also include aesthetics and being environmentally conscious, stating that “I care” or “I am different”.

Home owners would focus on the durability of materials, life of the entire property and low maintenance cost.

Developers would probably look on environmental aspects in combination to total cost and return on investment – called a “Green per Dollar” perspective.

Finally, the precincts and local governments might go with green construction by various reasons: to encourage innovation, long-term city planning including improvement of citizen’s well-being, quality of life and environment.

Life Cycle Design as a method to look inside the black box.

Green design and performance indicators need to be transparent and standardized to satisfy major motivations of groups and individuals. The best way to fully quantify the environmental impact is by looking at the whole of project life cycle performance and using Life Cycle Design (LCD) methodology to model impacts from construction through to the end of life, including use phase impacts. Most importantly, LCD can help to understand the project functionality, and how well it is delivering the proposed primary function. LCD looks at a building through the prism of many features, holistically and over the life time. This prism includes operational energy and water, durability of materials, maintenance and wide spectrum of environmental impacts. LCD approach is combined with Life Cycle Costing to help designers understand the “Green per Dollar” feasibility of improvement initiatives and how economically sustainable the overall design is throughout its lifespan.

Life cycle thinking to build better buildings today.

There´s a global trend in the construction industry to adopt life cycle thinking and we increasingly hear terms like circular economy, cradle-to-grave or even cradle-to-cradle, closed loop recycling or designing for deconstruction. The use of Life Cycle Assessment is increasing in a number of Green Building Rating Schemes (Green Star, LEED, BREEAM, HQE, LBC), and also is the newly available life cycle inventory data, user-friendly LCA software tools, Environmental Product Declarations.

The growth in regulations within the construction industry is also observed, with planning policies mandating environmental reduction targets and improving the general industry know how. Companies are using science based targets to measure efficiency of their climate action plans and understanding how they are related to the UN´s Sustainable Development Goals (SDGs).

To meet changing requirements related to a sustainable future within the construction industry, systems and tools need to be widely used from concept stage on throughout the design development process. This will allow project teams to set ambitious environmental targets and therefore implement the life cycle approach to deliver the buildings of the future already today.

 

 

References:

UN environment – The Global Status Report 2017 – Towards a zero-emission, efficient, and resilient buildings and construction sector

World Resources Institute – What Is the Future of Green Building?

 

Want to learn more about eToolLCD and LCA?  Please register for our next webinar event

We hope this article was useful, stay in touch!

 

eTool To Provide Life Cycle Assessment software to HS2

eTool have been engaged by HS2 to provide our market leading life cycle design software eToolLCD.

HS2 is Europe’s largest infrastructure project, designed to increase capacity on the UK’s railways and improve connectivity between eight out of 10 of Britain’s biggest cities, creating thousands of jobs and rebalancing our economy. It will run between London and Birmingham from 2026, extend to Crewe by 2027 and then link to Manchester and Leeds from 2033 with HS2 trains continuing to cities including Newcastle, Edinburgh and Glasgow.

In order to measure, reduce and report on carbon emissions, materials efficiency and wider embedded environmental impacts, HS2 have adopted a life cycle assessment (LCA) approach. This modelling will include impact analysis across all life cycle stages from the extraction of raw materials through to processing, transport, use and disposal.  Using eToolLCD, the modelling will be conducted in accordance with applicable standards including BS EN ISO 14040, BS EN ISO 14044, BS EN 159783 and PAS 2080. The LCA modelling results will also be used to demonstrate achievement of credits within BREEAM Infrastructure.

eToolLCD was awarded its contract with HS2 after a thorough tendering process.  eTool also look forward to developing the eToolLCD further to complement HS2’s bespoke requirements, such as evaluating their innovative materials efficiency metric.

The tool will initially be used to develop baseline, against which design options can be assessed.  As the design progresses, HS2 subcontractors will take on LCA modelling tasks to further develop the models and identify further opportunities for improving the life cycle performance.  Through using eToolLCD’s unique enterprise functionality, multiple users can review and collaborate effectively on large complex LCA models, a feature that will enable this sequential and collaborative assessment.

How to complete an LCA for BREEAM 2018

life cycle design

From specific products to whole project analysis, LCA is taking off globally to help project teams quantify and improve environmental performance to meet global and national impact reduction targets.  BREEAM have recognised this and the new updates to BREEAM 2018 place a heavy emphasis on the LCA approach.

  • Up to 2 credits available for completing an LCA using IMPACT.  Credits awarded depend on performance against the Bre benchmarks.  Credit is awarded at Stage 4 once detailed design information is available
  • Up to 2.66 further credits available for Superstructure options appraisals during RIBA stage 2
  • Up to 1.33 further credits available for Superstructure options appraisals during RIBA stage 4
  • 1 credit available for substructure and landscaping options appraisal during RIBA Stage 2
  • 1 exemplary credit available for services options appraisal during RIBA stage 2
  • 1 exemplary credit for alignment with LCC
  • 1 exemplary credit “3rd party verification”

Understandably this is a big step change for many design teams used to the traditional Green Guide approach.  However, significant changes are enabling LCA to become common practice for designers, including:

  • newly available life cycle data,
  • user-friendly and cost-effective software platforms,
  • collaborative development of international standards and increased transparency,
  • integration with Life Cycle Costing for economic and environmental accounting
  • LCA legislation in planning policies, EIA and government incentives,
  • increasing uptake in academic research and universities curriculum
  • professional leadership and technical know-how;

The heavy weighting of credits for Stage 2 analysis encourages design teams to consider the life cycle impacts of their buildings at early design stages. (BREEAM require evidence for this to be submitted pre-planning). Applied at project concept stage, LCA provides insight and huge opportunities for life cycle environmental and cost improvements. Performance targets can be set during project preparation and brief, “what if” scenarios are used to assist design development and a detailed report will consolidate results according to project specifications. This “disruptive” practice in sustainable design will hopefully unlock the further potential to decarbonise buildings and infrastructure.

How an integrated design process for BREEAM 2018 works?

Riba graphic

 

LCA Stage 2: Often there will be limited information available at pre-planning and a limited appetite for spending money on LCA.  This is where eTools powerful template system comes into its own.  Our whole building LCA templates allow for quick, rough and ready LCA analysis.  With only basic information the template will fill the gaps using industry average defaults, this can be analysed for hotspots and design options and updated with project specifics as the design progresses through to Stage 4.

Benchmarking:  Although the benchmarking credits do not need to be submitted until Stage 4 the benchmarking report is fully automated from eTool.  So the number of likely benchmarking credits can be analysed early on and design options can be prioritised based on what provides the greatest uplift.

LCC Alignment: Aligning the LCA and LCC is of vital importance for effective LCA work. Quantifying the costs of improvements will help teams prioritise how to get the best environmental gain for least capital spent. With our recent cost functionality, it is a simple step to extract LCC results from your LCA model and report for the Man2 credits. Simply ensure you report the same options in your LCA submission as you do in your LCC reporting.

Substructure and Landscaping:  Our templates system covers all of these elements and they can be added to the model with basic information (eg depth and width of piles or area of macadam road).

Services: Services require a separate model because the Bre IMPACT data cannot currently be used to model services.  More information here.

3rd Party:  Our certification service is provided to all users projects completed commercially as part of our standard software offering. During the certification process, a senior eTool LCA practitioner is made available to the project and will undertake all quality checks defined in BREEAM.

For further detail on how to run reports for Breeam 2018 from eTool please see our support video here.

To continue supporting this process, eTool have released the eToolLCD Enterprise subscription. Embedding LCA at an organisation level has become easier and will provide added value with centralised ownership of LCA models, inter-company collaboration for integrated design and an unrestricted number of read-only users. 

Designers that have increased demand for LCA services can choose the new Specialist subscription to work on an unlimited number of projects with a fixed software cost.

We are working hard to continue bringing innovative solutions and we are improving eTooLCD with additional life cycle inventories, enhanced Life Cycle Costing functionality and many others that you can check out by creating your account at eToolLCD.

eTool have produced a number of different articles on integrated design using LCA including latest materials comparison, reporting efficiency and additional revenue by selling LCA services. Help us by sharing with friends and colleagues.

Want to learn more?  Please register for our next webinar event

We hope this article was useful, stay in touch!

 

How to ingrain LCA into your design process

life cycle design

A safe environment for future generations is being designed with the increasing use of Life Cycle Assessment. From specific products to whole project analysis, LCA is taking of globally to help project teams quantify and improve environmental performance to meet global and national impact reduction targets.

Significant changes are enabling LCA to become common practice for designers, including:

  • newly available life cycle data,
  • greater importance given to LCA in green building and infrastructure rating systems (LEED, BREEAM and Green Star),
  • user friendly and cost effective softwares,
  • collaborative development of international standards and increased transparency,
  • integration with Life Cycle Costing for economic and environmental accounting
  • LCA legislation in planning policies and government incentives,
  • increasing uptake in academic research and universities curriculum
  • professional leadership and technical knowhow;

Applied at project concept stage, LCA provides so much insight and huge opportunities for life cycle environmental and cost improvements. Performance targets can be set during project preparation and brief, “what if” scenarios are used to assist design development and a detailed report will consolidate results according to project specifications. This “disruptive” practice in sustainable design is unlocking great potential to decarbonise buildings and infrastructure.

How an integrated design process using LCA looks like?

Project Stage and LCA Processes(1)

Life Cycle Design is gaining greater recognition in Green Building and Infrastructure rating systems. Early engagement of LCA consultants will identify impact hot spots and help prioritise improvement strategies that are most cost effective. LCA credits may be easier to achieve as a result of engaging early. 

To continue supporting this process, eTool have just released the eToolLCD Enterprise subscription. Embedding LCA at an organisation level has become easier and will provide added value with centralised ownership of LCA models, inter-company collaboration for integrated design and unrestricted number of read-only users. 

Designers that have increasing demand for LCA services can choose the new Specialist subscription to work on unlimited number of projects with a fixed software cost.

We are working hard to continue bringing innovative solutions and we are improving eTooLCD with additional life cycle inventories, enhanced Life Cycle Costing functionality and many others that you can check out by creating your account at eToolLCD.

eTool have produced a number of different articles on integrated design using LCA including latest materials comparison, reporting efficiency and additional revenue by selling LCA services. Help us by sharing with friends and colleagues.

We hope this article was useful, stay in touch!

 

ACV de Edificação – Mais fácil e perto de você

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.