Isolated foundation (Geometry)

Isolated foundation property	Description
Icon
Modules where available
Geometry	Regular shape, Solid
End connection	Rigid and hinged, or custom defined by Point connection
Material	Concrete
Load direction	Arbitrary in
Load type	Point load (force and moment), Point support motion
Available analysis results	Displacement, stresses, stability and vibration shape in
Available design	Foundation design
Default Short Command	FIS

Table: Isolated foundation properties

Definition steps

1. If needed, set a proper position for the working plane.
2. Start Isolated foundation command from  tabmenu and choose Define.
3. Set the properties of the new Isolated foundation at Default settings:
   
   • Identifier (General)
     The program automatically generates it, but you can define custom value. Identifier (ID) number can be displayed in model view (Display settings).
   • Analytical system (General)
     Here the user can choose how to model the Isolated foundation depends on if “Calculate soil as a solid element” is chose or not. If “Calculate soil as a solid element” is not chosen in “Code, Configuration” dialog, user can choose if he/she wants to model the Isolated foundation by line support group or by surface support group. In this case bedding modulus can be set in Default settings / General dialog.
   • Insulation (General)
     User can apply insulations attached to the bottom of the isolated foundation. If Calculate soil as a solid element is activated, Insulations are calculated as part of the Foundation object with the user-specified parameters. Otherwise, they are ignored.
   • Material
     Only concrete material can be set for isolated foundation Analysis.
4. Choose a geometry definition method.
5. Define the Wall foundation in the model view based on the chosen geometry method.

Optional steps:

6. Modify the isolated foundation properties with the Properties tool of the Isoltated foundation tool palette.
7. Set the display settings of isolated foundations at Settings > All > Display > Beam, Column and Truss.
   
8. The Isolated foundations are stored on “Foundation” and if they modeled with Surface support group their supports will be stored at the “Support” Object layers. The color and pen width settings by selected beam elements can be modified by Edit > Properties > Change appearance.