We will be using crushed concrete from an exiting building on site for subbase for access road. I understand this cannot be used for MRc3 Material Reuse, but rather for MRc4. The question is how do we price it and how much percent is it recycled and if it is post- or pre-consumer? Also can it be counted towards MRc2 Waste Management and MRc5 Regional Materials? Many thanks in advance
You rely on LEEDuser. Can we rely on you?
LEEDuser is supported by our premium members, not by advertisers.
Go premium for
RETIRED
LEEDuser Expert
623 thumbs up
December 12, 2014 - 10:30 am
Hrvoje - The reason for counting it under MRc4 instead of MRc3 is as follows: because the material is being processed into a new material (from concrete to subbase) - instead of being used in its original form, which is what MRc3 covers. To get a price you need your general contractor via the appropriate subcontractor to price what new subbase would have cost for your access road. This product is 100% recycled and it is consider post-consumer (Waste generated by end users (households or commercial, industrial and institutional facilities) of a product no longer able to be used for its intended purpose that is recycled into raw material for a new product.). Note: It is not from an industrial process, which would make it pre-consumer. You can make it also 100% regional for MRc5. Please read the LEED Reference Guide Section on Recycled Materials that was added by this Reference Guide Correction - ID #100000379 - http://www.usgbc.org/leed-interpretations?keys=100000379. And you can count the material’s weight or volume as diverted under MRc2.
If you don’t have it already, be sure to check out LEEDuser’s LEED 2009: The Missing Manual published by BuildingGreen, Inc. - http://www.leeduser.com/missing-manual. It is free to members and check out page 63 - “We are demolishing an existing building, crushing the concrete and stone, and using it as fill onsite. Does this count under MRc3?”
Andrew Tse
LEED Project EngineerLilker EMO Energy Solutions
2 thumbs up
December 12, 2014 - 11:17 am
Right on. It's a great strategy for contributing to sustainability and LEED points AND cost savings. This was done on a project I worked on and we estimated it saved $200,000! I advocate for this strategy on any project that involves concrete demolition.
Hrvoje Kvasnicka
Jones Lang LaSalle2 thumbs up
December 15, 2014 - 2:21 am
Michelle, Tom - Thanks a lot for your help!
ebru unver
LEED AP BD+CILTAY
4 thumbs up
January 30, 2015 - 11:33 am
Hi everyone,
We re facing a very similar situation with out site , in which we have a concrete parking lot and seperate concrete areas.
I ve understood that the crushed concrete is considered %100 recycled. but would like to know what the pre-consumer recycling percentages can be on this material.
Thank you!
RETIRED
LEEDuser Expert
623 thumbs up
January 30, 2015 - 11:43 am
Ebru - As noted in my post on 12/12/14 above(http://www.leeduser.com/credit/NC-2009/MRc4?page=0#comment-55167), reprocessed concrete is 100% post-consumer recycled content.