The Ashrae90.1 baseline model requirement for envelop is defined as assembly max U factors. But in equest, the U-value input option is only for lightweight constructions. So, if I use Layers input, how can I choose the correct materials of the layers in order to match the u factors of Ashrae 90.1 baseline model requirement?
I recommend downloading the inputs developed by the Rocky Mountain Institute for modelling ASHRAE envelope constructions in eQUEST from this link. It's also worth checking out their page of energy modelling resources. Copy and paste the constructions into your .INP file, and modify the R-values until the U-value matches the required U-values from ASHRAE 90.1.
Just to follow up in a more general way, the U-value of any construction can usually be adjusted by changing the thickness of the insulation layers in the detailed edit mode. You can select the construction, click over to the layers window and adjust the thickness of the insulation.
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