Question: I have a garage wall - part of which is 300mm to earth and the remaining 2730mm above earth (3030mm CL- 300mm = 2730mm).
Answer: When entering the data for the base wall, enter the base wall details into the main wall selection. As displayed below (Yellow). The remaining information on this screen relates to the overall wall properties.
The only information relating to the base wall that should be entered on the 'specify' screen is the Height only.
The remaining information on this screen will then need to be changed to suit the upper wall building specifications. The screen states this in the Top Left hand side of the window, "Upper External Wall".
Once completed, check your summary to ensure these areas have be accounted for correctly.