It is assumed the Reference House and the Proposed House have the same:
- Gross area of above-ground portion of foundation walls
- Soil conditions
- Orientation of the foundation
- Ratio of fenestration area to opaque area of doors
This section also provides information for how to model:
- Thermal mass, solar absorptance, airtightness of building envelope
- Thermal resistance of building envelope
- Area and orientation of windows and doors of reference house (equal on all sides)
- Configuration of insulation in below-ground assemblies