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What building elements get included in this calculation and what can be excluded?

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NC-2009 MRc1.1:Building Reuse—Maintain Existing Walls, Floors and Roof

Building Reuse

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David Browne
Architect
CRA Associates, Inc.
LEEDuser Premium Member
5 thumbs up

With regard to Credit MRc1.1-Exisitng walls, floors and roof: I have a building which has a fake mansard around its perimeter. This fake mansard is outside the building envelope (beyond the face of the walls, mostly above the roof deck). I need to remove a good portion of it, because I am adding onto two sides of the building. Can anyone tell me why I shouldn't exclude the mansard, if I'm retaining almost all of the actual roof deck and more than 50% of the walls?

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April Brown
Sustainable Building Consultant
Green Bridge Consulting
LEEDuser Expert
28 thumbs up

Mon, 06/01/2015 - 21:13

This is a good question that I have no experience. That said, given that it's not structural, I would be inclined to exclude it from your calculations, only including structural elements.

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