CS 2009 MRc1: Building Reuse—Maintain Existing Walls, Floors and Roof

  • CS MRc1 Action Steps Diagram
  • Existing building?

    If an existing building plays a starring role in your project, it’s a good candidate for this credit, which rewards the reuse of buildings and their structural components. In this way you can reduce the energy- and resource-intensive manufacturing of new materials, while prolonging the enjoyment of a building’s character and history. If the existing building plays only a small role, on the other hand, it is less likely to qualify for this credit, although it may contribute to materials reuse credits.

    If a project includes new construction in addition to building restoration, the project is only eligible for the credit if the floor area of the new construction is no more than two times the floor area of the retained existing structure. A LEED for Core and Shell project can earn...

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5 Comments

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Robyn Williams Heeks Tise-Kiester Architects
Feb 14 2011
Guest
90 Thumbs Up

Documentation Requirements

In the LEED User documentation toolkit they describe using elevations to verify the exisiting / new calculations. I can see how these would be necessary for calculating surface areas, but as best I can tell they are not an upload requirement for LEED documentation. Is it something the LEED reviewer sometimes requests? I am trying to anticipate how "presentation worthy" our surface area studies need to be. Thanks.

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Anne Nicklin Executive Director, Building Materials Reuse Association Feb 18 2011 Guest Expert 639 Thumbs Up

Hi Robyn,
Sometimes the easiest way to think about this is to look at it from the reviewer's perspective. For the reviewer, they have a relatively short amount of time to understand the intricacies of a building that they've never seen or thought about before. The drawings that you submit are the prime communication tool that they reviewer has to rely on.
As such, yes- elevations are critical, as are full sets of plans, site plan, and a photo or rendering. Don't worry about your elevations being all glossy- whatever you used to communicate with your contractor or client is usually just fine for communicating with a reviewer.

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Kimberly Frith Sustainability Consultant, exp Feb 18 2011 Member 585 Thumbs Up

Robyn,

You would provide the elevations under the Project Information Form 4 section, along with your other general project docs like floor plans, site plans, sections, narratives, etc.

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Robert Himmler energydesign stuttgart GmbH
Nov 18 2010
Member
160 Thumbs Up

different requirements for CS

In the CS Reference Guide it says the floor area of new construction under this rating system can be up to 6 times the existing flooarea.
As far as I see this is not mentioned in your Birds Eye View
Best regards

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Tristan Roberts Editorial Director – LEEDuser, BuildingGreen, Inc. Nov 29 2010 Moderator

Rober, that is the very first item shown under the "Action Steps" diagram in the Bird's Eye View above, no?

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