The thermal properties of the construction are calculated based on layers, each layer having a material reference and thickness. The combination of thickness and material gives the thermal characteristics of the layer.
Construction Components also store derived data on the thermal properties of the overall layered construction for example U-value, convective heat transfer coefficients etc.
There are three tabs on Constructions dialogs:
Construction component data can be accessed:
from the Components tab on the opening screen (to view/edit library components if no file is open),
from the Components tab in the Navigator panel (to view/edit model components if a file is open),
by double-clicking on the construction icon in the model data,
by clicking on the Edit button when selecting constructions from a list.