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NC-v4.1 MRc1:Building Life-Cycle Impact Reduction

Opt 2, path 4 Reuse and Salvaged Material requirement

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Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

I can't seem to find a minimum threshold for the amount of reused / salvaged materials required to be able to achieve all (4) points within Opt 2 Path 4.

Does anyone know if GBCI has internal thresholds they require of project teams? 

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Wes Sullens
Director, LEED
US Green Building Council
LEEDuser Premium Member
8 thumbs up

Thu, 11/10/2022 - 23:21

Hi David,  There is no threshold at present. Since LEED v4.1 is a beta rating system, the intent is to see what types of projects we get so that we can review and see if a threshold is appropriate. I hope this helps.  Wes
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Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Fri, 11/11/2022 - 12:19

Thanks Wes! This does help. all the best, dave.

Tue, 06/06/2023 - 18:23

Does slag count as a reused or recycled material since it is a by-product of steel manufacturing? We have achieved a substantial reduction in GWP in concrete mixes by replacing cement with slag, and are hoping to achieve the 4th point in version 4.1
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Jeanne Davidson
Senior Benchmarking Specialist
Atelier Ten
LEEDuser Basic Member
1 thumbs up

Mon, 02/19/2024 - 11:16

Would be interested to hear if there is an answer to Rachel's question? i.e. could cement replacement count as salvaged material?
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Dave Hubka
Practice Leader - Sustainability
EUA
LEEDuser Expert
510 thumbs up

Mon, 02/19/2024 - 13:24

To be considered "salvaged" I believe it needs to be recovered from an existing building or construction site. By-products of a manufacturing process are considered "pre-consumer recycled content". It is my understanding that slag would probably more closely align with a pre-consumer recycled content product. 

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