Details on layer composition: Walls, Roofs, and Floors

[amaccarini]

Hi,
I am trying to better understand the layer composition of the different constructions listed. For instance, in the file Insulation Wall.tsv, I see options such as Option=Wood Stud, R-15, Option=CMU, 6-in Hollow, R-19 and Option=Brick, 12-in, 3-wythe, R-7 among others. However, what exactly do these names mean? Is there any documentation that provides details about the thickness and composition of each layer?

Take, for example, Option=Brick, 12-in, 3-wythe, R-7. According to the documentation, this wall has a total thermal resistance of 10.3 h-ft²-°F/Btu. But how is this resistance achieved? How many inches of brick material and insulation are included? Is it possible to find more detailed information about the layer breakdown for these constructions?

[afontani]

ResStock specifies ResStock arguments to OpenStudio-HPXML. The arguments that are passed to OpenStudio-HPXML are in the resources/options_lookup.tsv. There are three main ResStock characteristics that define the HPXML Wall elements:

• Insulation Wall
• Geometry Wall Exterior Finish
• Geometry Wall

The OpenStudio-HPXML documentation might be helpful. I would look at the HPXML Walls section in the HPXML Enclosure section in the documentation. The section points to ANSI-RESNET-ICC 301 for the description in terms of what is included in the wall definition. The R-values specified do include the interior and exterior film coefficients.