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NC-v4 MRc1: Building life-cycle impact reduction
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Changing structural systems between the baseline and proposed design
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Sarah Buffaloe
Associate, Built EcologyWSP USA
LEEDuser Expert
6 thumbs up
April 14, 2023 - 1:48 pm
Hello Ahmed. Yes this is an accepted strategy for LCA optimization. Make sure the building GSF didn't change more than 5% in the baseline vs. proposed case to meet the criteria for comparability. Very interesting study! Please share what your team learned!
Ahmed Abd El Fattah
1 thumbs up
April 15, 2023 - 9:27 pm
Sure Sarah. Thanks a lot.
Afogreen Build
www.afogreenbuild.comGreen Building Consultant
247 thumbs up
July 19, 2023 - 12:34 am
Hi Ahmed,
Yes, agree with Sarah.
As stated in LEED guide, “No impact category assessed as part of the life-cycle assessment may increase by more than 5% compared with the baseline building.” (Page 496).
And you may should include a narrative of how the life cycle assessment was conducted and the changes made to proposed buildings in order to optimize the LCA.
Best regard – Afogreen Build Team