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FAQs about MRc6 :

How does this credit treat materials that come from animals such as wool or leather?

What building components are typically purchased with renewable materials to reach the 2.5% credit threshold?

A manufacturer is claiming that certain trees, e.g. balsa, acacia, mesquite, can be harvested within 10 years, and thus contribute to this credit. Is this acceptable?

We are pursuing IEQc4.5 from LEED-CI as an ID credit. Are we then required to include the cost of furniture in MRc3–7?

What building components are typically purchased with FSC content to earn this credit?

We’re having trouble getting FSC wood within our budget. Can we use products with another forestry certification?

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I have supporting manufacturer documentation for the FSC wood used on our project. Is this enough to document this credit, or do I need invoices as well?

Can products labeled “FSC Recycled” or “FSC Recycled Credit” contribute towards MRc7? What about "FSC Mix" percentages that refer to recycled content?

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We are using a lot of reclaimed wood. Should we include this in our MRc7 calculations? What about wood that is already installed on the project, in a renovation? What about wood products with recycled content?

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A product has FSC-certified veneer, but a non-certified core. Can we prorate the MRc7 contribution of this product based on the cost of the veneer?

Should wood used on site features such as benches or a gazebo be included here?

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Forum discussion

Schools-2009 MRc6:Rapidly Renewable Materials

Hevea brasiliensis

MAUDE PINTAL

Project manager, PA LEED BD+C , Référent certification HQE

AEDIFICA INC.

LEEDuser Basic Member

22 thumbs up

July 18, 2011

Hello, Has anyone ever specified rubber tree (Hevea brasiliensis) wood as a finish? I haven`t seen it being listed in any charts as the one above and it hasn`t come up in the forum posts. The manufacturer claims that it has short harvest cycle and that after the latex is extracted the wood can be used as lumber. Thank you,

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David Posada

Integrated Design & LEED Specialist

SERA Architects

LEEDuser Expert

1361 thumbs up

Mon, 07/18/2011 - 23:37

Haven't seen these used - Do they meet the 10 year or less harvest cycle mentioned in the requirements? I understand that rubber trees may start producing latex after only 5 or 6 years, but are often kept in production until they are about 25 to 30 years old.

MAUDE PINTAL

Project manager, PA LEED BD+C , Référent certification HQE

AEDIFICA INC.

LEEDuser Basic Member

22 thumbs up

Tue, 07/19/2011 - 14:03

You`re right David. Now that I`ve read a bit more about it I learned that after 25 to 30 years of exploitation the trees use to be chopped down and burned however they started using it in construction, cabinetry and as a finish since the interest in alternative and more sustainable wood sources emerged. I guess the rubber tree doesn`t fit into the description of rapidly renewable source but I wonder if there is another credit rewarding the project for using wood that has already served a different purpose and would otherwise be discarded. Thank you, M

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