A question about construction set


I wanted to work based on ASHRAE 90.1: 2010 for my simulations and am wondering how the numbers in the construction set library have been considered. Based on appendix G of ASHRAE 2010, a non-residential steel framed building’s exterior wall needs an R-value of R-13 + R-3.8 c.i. while the construction set library shows the R-value of 12.33.

I am a little confused if I am on the right track. I appreciate your help.


Hello @mahagh I hope I understand you right?
If then you should look for the U-factor because it takes the heat transfer to air into account.

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