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NC-v4 EAc2:Optimize energy performance

New and Renovation: How to Determine Points from Table 1

I am working on a project that is approx. 24,600sf which includes 11,600s.f. of major renovation with 13,000s.f new construction. We are using Option 1 Whole Building Simulation. How do I select the threshold for the project from Table 1 in Reference Guide? Is it "New Construction" column since 53% of the project is new construction? Or Major Renovation?? Major Renovation column gives project more points? Prorated? That would complicate the heck out of energy modeling process!!! For example: 24% New Construction = 10 points 24% Major Renovation = 11 points Looking for feedback from fellow LEEDUsers that have already crossed this bridge with Reviewers.

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Fri, 05/26/2017 - 13:46

When you have a combination of new and existing the thresholds for points are determined by a weighted average calculation. For example, one point is earned at 6% savings for new and 4% existing. If the new is 50% of the total the adjusted threshold would be 5%. You then go up in the same 2% increment for additional points. So in your case the threshold for the first point is 5.06% (2% x 0.53) + 4%.

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