Defines the default length of a foundation, as shown in the 'Length' box of the 'Create/Edit Structure' window. If the chosen foundation is not available in the default length, the closest available length will be used.
A number that has a value of 0 or greater, expressed in metres.
Default Setting: 3.0 metres
Changing properties: If you wish to change the option of this property, your Project Settings Administrator must request a project settings change.