LCA quantifies your carbon impacts
Life Cycle Assessment (LCA) helps you achieve LEED® credits (v4 and v3) and quantifies the environmental impacts of your whole building over it’s lifetime. LCA used to be a complex and strenuous task, but with One Click LCA you can be done in no-time.
By automating LCA from your existing design data, you can be done with the assessment in just minutes. This allows you to use the results as a environmental design tool that provides you with key quantitive insights. The robust One Click LCA cloud software also supports various LEED credits with ready-to-use templates, summarized in the table below.
Credits subject to project constraints. Bionova Ltd accepts no responsibility for omissions or errors in the above data.
Building Life-Cycle Impact Reduction, Option 4: Whole-Building Life-Cycle Assessment: 3 base points + optional exemplary and regional priority
In LEED v4, most users will utilize the Option 4: Whole-Building Life-Cycle Assessment for MRc1, to deliver 3 them base points, an optional exemplary point and a possible regional priority credit, along with the enhanced design LCA provides them with. This credit is available in LEED v4 BD+C and other new construction and major renovation versions, but not in LEED v4 EBOM, ID+C and Homes.
In LEED BD+C v 2009 (or v3), you can follow this process to achieve the MRpc63 Whole-Building Life-Cycle Assessment credit.
What you need to do to earn the LEED v4 LCA credits
The process requires improving building life-cycle impacts by 10 % compared to a baseline building, using a Life-Cycle Assessment software. The baseline and proposed buildings must be of comparable size, function, orientation,and operating energy performance. The LCA must be calculated for six listed environmental impact categories with three of them, including Global warming potential, demonstrating at minimum a 10% reduction. No category of impacts may increase by more than 5% compared to the baseline design.
Working to achieve LEED-mandated performance improvement
In practice, it helps to think of the baseline building as a building meeting the same function and size, but without all of the clever design choices that make it more efficient. You’ll want to iterate over several design changes rapidly to see what they would mean for your project and compare changes to your baseline project seamlessly. To ensure everything goes smoothly, pick an easy to use LCA software. One Click LCA allows varying and comparing alternatives in minutes, and helps you develop your baseline design, too. With the additional power of using the LCA as a design tool, an easy to use building LCA software with good support makes this a very attractive credit for LEED projects.
Effortless Whole-Building LCA with One Click LCA
The LCA data used must comply with ISO 14044, which is ensured by LCA software that conforms to LEED v4’s requirements. One Click LCA complies with all LEED requirements and supports all required impact categories, and provides dedicated LEED-specific application to International LEED users. The application provides a fool-proof template that ensures you’ll always follow the LEED template to the letter. There is a bonus, too. If you achieve any improvement over the required credit thresholds in all six impact categories, you are eligible for the exemplary performance credit. In some countries, including Sweden, LCA is also a regional priority credit.
LEED v4 also includes two Building product optimization and disclosure credits, the MRc2 and MRc3. This outlines requirements for MRc2. See below the outline for MRc3.
Option 1. Environmental Product Declaration (1 point)
- The requirement of the credit is to use at least 20 permanently installed building products from at least five different manufacturers that have an environmental product declaration (EPD). Type of the EPD defines it’s weight in calculations. Product-specific EPDs count for one EPD, whereas product-group average EPDs count for a half. Critically reviewed LCA counts for a quarter.
Option 2. Multi-Attribute Optimization (1 point)
- The requirement is to show that at least 50 % (by cost) of permanently installed building products demonstrate LCA impact reduction in at least 3 impact categories compared to industry average. Alternatively, this may be shown by compliancy with other USGBC approved programs. This option weights the location of sourcing (products extracted, manufactured, purchased closer than 100 miles / 160 km counts as double) and caps structure and enclosure to not more than 30 % of value of compliant building products.
One Click LCA comes with an integrated EPD database
To be able to initially specify, and later to get these credits, you’ll need to go through a vast range of options and locate manufacturers with EPD data and review their impacts. One Click LCA helps you to get this done easily. We have an extensive LCA database that includes all EPD databases worldwide. What’s more — you may have already chosen the EPDs when conducting the LCA analysis for MRc1 using One Click LCA. From there, you will just need to mark the EPDs you are actually going to use in the building design, to achieve this credit.
Looking to develop your expertise?
Get your LEED CE-credited training!