I'm trying to model a wood framed 4 story multifamily building, and the client wants to go without continuous insulation which is what's called for on table 5.5-4, resulting in a higher U value than the baseline. My question is can the whole building performance demonstrated in the model make up for the under performing envelope? And if so are there additional documents I have to submit to show compliance with 90.1 since the prescriptive compliance path wasn't chosen.
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Christopher Schaffner
CEO & FounderThe Green Engineer
LEEDuser Expert
963 thumbs up
November 30, 2012 - 11:51 am
If you are running an energy model, you can use the model to demostrate performance better than 90.1 baseline. For LEED, you'd just provide the typical model documentation, and indicate that you are following the modeling path.
If you are following one of the prescriptive compliance paths (AEDG, Core Performance), you're stuck.