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LEED v2009
New Construction
Materials and Resources

Building Reuse—Maintain Existing Interior Nonstructural Elements

LEED CREDIT

NC-2009 MRc1.2: Building reuse - maintain interior nonstructural elements 1 point

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Credit achievement rate

XX%

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Josée Lupien

LEED Fellow & WELL AP

Vertima inc.
President

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Credit language

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© Copyright U.S. Green Building Council, Inc. All rights reserved.

Requirements

Use existing interior nonstructural elements (e.g., interior walls, doors, floor coverings and ceiling systems) in at least 50% (by area) of the completed building, including additions. If the project includes an addition with square footage more than 2 times the square footage of the existing building, this credit is not applicable.

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Frequently asked questions

What about exterior finishes and site features like paving? Can I get credit for these?

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How do you calculate the existing building non-structural reuse?

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Can you double-dip between MRc1.1 and MRc1.2 for building elements such as floor slabs if they are being refurbished and reused as finish floor?

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I'm reusing a historic building but I don't qualify under MRc1 due to the thresholds in the credit language. Can't I somehow get credit?

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See all forum discussions about this credit »

Addenda

11/1/2011
LEED Interpretation
Inquiry:

How do you account for previously exposed structures that are finished as part of the project?

Ruling:

Components contributing to MRc1.2 include finished ceilings, walls, doors, flooring, and built-in case goods. Components should be divided into 3 categories for calculation: Prior Condition, Completed Design, and Retained Components Area. Prior Condition includes the total finished area that existed before the project began, Completed Design in the total finished area in the completed design (including all new and retained elements), and Retained Components Area is the area of components listed above that were in the space under both Prior Condition and Completed Design. Previously exposed elements that were finished as part of the project should not be counted in the Retained Components Area since the original element was altered/added to during construction. For example, an unfinished ceiling covered with a lay-in ceiling after construction would not be able to contribute to credit. Applicable internationally.

Campus Applicable
No
Internationally Applicable:
Yes
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Credit achievement rate

XX%

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LEEDuser expert

Josée Lupien

LEED Fellow & WELL AP

Vertima inc.
President

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USGBC logo

© Copyright U.S. Green Building Council, Inc. All rights reserved.

Requirements

Use existing interior nonstructural elements (e.g., interior walls, doors, floor coverings and ceiling systems) in at least 50% (by area) of the completed building, including additions. If the project includes an addition with square footage more than 2 times the square footage of the existing building, this credit is not applicable.

XX%

Upgrade to LEEDuser Premium to see how many projects achieved this credit. Try it free »

Got the gist of MRc1.2 but not sure how to actually achieve it? LEEDuser gives step-by-step help. Premium members get:

  • Checklists covering all the key action steps you'll need to earn the credit.
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  • On-the-fly suggestions of useful items from the Documentation Toolkit and Credit Language.

In the end, LEED is all about documentation. LEEDuser’s Documentation Toolkit, for premium members only, saves you time and helps you avoid mistakes with:

  • Calculators to help assess credit compliance.
  • Tracking spreadsheets for materials purchases.
  • Spreadsheets and forms to give to subs and other team members.
  • Guidance documents on arcane LEED issues.
  • Sample templates to help guide your narratives and LEED Online submissions.
  • Examples of actual submissions from certified LEED projects.

What about exterior finishes and site features like paving? Can I get credit for these?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

How do you calculate the existing building non-structural reuse?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

Can you double-dip between MRc1.1 and MRc1.2 for building elements such as floor slabs if they are being refurbished and reused as finish floor?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

I'm reusing a historic building but I don't qualify under MRc1 due to the thresholds in the credit language. Can't I somehow get credit?

The answer to this question is available to LEEDuser premium members. Start a free trial »

(If you're already a premium member, log in here.)

11/1/2011
LEED Interpretation
Inquiry:

How do you account for previously exposed structures that are finished as part of the project?

Ruling:

Components contributing to MRc1.2 include finished ceilings, walls, doors, flooring, and built-in case goods. Components should be divided into 3 categories for calculation: Prior Condition, Completed Design, and Retained Components Area. Prior Condition includes the total finished area that existed before the project began, Completed Design in the total finished area in the completed design (including all new and retained elements), and Retained Components Area is the area of components listed above that were in the space under both Prior Condition and Completed Design. Previously exposed elements that were finished as part of the project should not be counted in the Retained Components Area since the original element was altered/added to during construction. For example, an unfinished ceiling covered with a lay-in ceiling after construction would not be able to contribute to credit. Applicable internationally.

Campus Applicable
No
Internationally Applicable:
Yes

LEEDuser expert

Josée Lupien

LEED Fellow & WELL AP

Vertima inc.
President

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