Forum discussion
NC-2009 MRc4: Recycled Content
What percentage of backup documentation (Invoices, letters, etc,.) do i have to submit for all the materials that are listed in the LEED form cut-sheet submitted in the application process?
Thank you for your help in advance!
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The recycled content percentage on the product data sheet is given as a range. What should I do?
Is the default average recycled content value of 25% for steel still allowed?
Can site materials, such as soil, be included in the MR credit calculations?
Are there recycled content claims that I should be wary of?
RETIRED
LEEDuser Expert
623 thumbs up
July 16, 2014 - 1:36 pm
Felipe - The forms for MRc4 and MRc5 list that you have to provide backup for 20% of the materials by cost for each credit. The BDC Materials and Resources Calculator helps you tally the 20% by cost uploads you need. You can check off the items there for backup (Cutsheet Provided2 column) and it will give you a % of total at the bottom.
Felipe Martinez
July 18, 2014 - 8:44 am
Thank you Michelle. I made an observation that you can possibly help clarify for me. As i looked over the LEED concrete tracking form and also seeing what our supplier provided, I noticed that the cost for the cementitious material is listed on its own with its respective recycled content. Then in another page the total cost for the concrete mix including all raw materials (stone, pearock, screening, etc.,) is listed with its % of material harvested within 500 miles. My question is, since these are two different costs and are for two different forms MRc4 & MRc5, are they listed with the same name? or do i specify for MRc4 the concrete mix only includes cementitious material for its costs and recycled content? and then in MRc5 I would just write the concrete mix name with its total cost and % harvested or extracted within 500 miles? Thank you in advance for your help.
RETIRED
LEEDuser Expert
623 thumbs up
July 18, 2014 - 9:05 am
Felipe - Please make sure you are using the BDC Materials and Resources Calculator, which is an Excel spreadsheet that accompanies the v04 and newer versions of the MRc4 and MRc5 forms. You may need your project team administrator to upgrade your forms if you have v03 or even the dreaded beta. Using this spreadsheet is a much easier way to track and document the MR credits than on the earlier versions of the form itself. You can get the spreadsheet from the Credit Library under Resources - http://www.usgbc.org/node/1731024?view=resources.
I think that your supplier is helping you greatly. They are setting you up to have the recycled part of the concrete mix on a separate line in the BDC MR calculator with the remaining items (less the cost of the recycled items) on another line so that you can easily document the concrete components and avoid double counting. As you indicate, the recycled component is typically also regional.
I label the concrete as "concrete w/o fly ash included" and input its regional attributes and subtract the cost of the fly ash from the overall mix design. Then I put the fly ash on its own line and input its recycled and regional attributes. This way I can help the reviewer see that I am not double counting the recycled fly ash twice for regional. Also, be sure you are using the Supplementary Cementitious Materials information in the Reference Guide to get full credit for the recycled components.