Hi everyone,
I would like to clarify the difference between reuse and salvage materials and emphasize that this is different from recycled materials for Option 2, Path 4. Additionally, there is no specific percentage or quantity requirement for their use. This means, for example, that using just one reused door can satisfy the requirements, although this might not seem adequate.
Here are the details for your reference:
V4.1 BD+C - New Construction - Option 2. Whole-Building Life-Cycle Assessment (1-4 points)
Eslam Elshorbagy
AdvisorMantle Developments
July 30, 2024 - 3:10 pm
Could someone provide more insights on this?
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
532 thumbs up
July 31, 2024 - 8:45 am
On a past project GBCI confirmed that there is not a minimum threshold for reuse/salvaged materials. So technically, one structural beam being reused would satisify the requirement.
GianCarlo Greco
SMMA1 thumbs up
December 17, 2024 - 10:22 am
Thanks for your post. We modeled an existing to remain portion of our project as existing in the Proposed model while modeling the same portion as new in the Baseline. I still think this is the right approach from a modeling perspective, but believe GBCI also wants us to complete the Building Reuse calculations as well in order to achieve the 4th point under Whole-Building Life-Cycle Assessment. The comment we received from GBCI was:
"The project team has applied for four points for impatc reduction of 20% in Global Warming Potential and at least 10% in at least two other impact categories. However, to earn four points, the project must also incorporate building reused and/or salvaged materials as part of the proposed structure or enclosure design. The report indicates that the existing to remain portion of the school was modeled as reused or existing and compared to a baseline of new construction using the same materials, which does not meet the requirements. Reused elements may be from on-site or off-site and should be modeled following guidelines for small scale reuse (see Further Explanation, Small Scale Reuse in LEED v4), these guidelines should also be used for large scale reuse incorporation in Path 4 for LEED v4.1."
Did you have to complete calculations on your projects of building reuse and/or salvaged materials when trying to get the 4th point for a Life-Cycle Assessment? If there is no threshold, i'm a little surprised that the calculations need to be completed at all and this can't just be incorporated in the Tally model itself.