Assertion: insulation's r value | /r/HasProperty | added
Facets:
Source sentences:
text: In calculating the R-value of a multi-layered installation, the R-values of the individual layers are added:
text: In calculating the R-value of a multi-layered installation, the R-values of the individual layers are added.
text: In calculating the R-value of a multi-layered installation, the R-values of the individual layers are added.