An ETTV and RTTV check is performed on the baseline building. RTTV check is applied only when roof lights are present, otherwise a U-value check is performed on the roof.
Reference building constructions are modified to ensure that the Reference building achieves an ETTV value of 50 W/m2.
When the analysis is complete, a dialog will be shown with the final ETTV value for the Reference Building, and a dialog for either the RTTV or the outcome of the U-value check (as appropriate).
