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.

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