# Use of Axis Sets
Axis sets are used widely in GSA. Some of the uses are
- locating construction grids in space
- node definition
- applying constraint to nodes
- orientation of spring, mass and 2D elements
- orientation of loads
- orientation of assemblies
- examination of results
Note that cylindrical and spherical user defined axes cannot be used in some situations. The following table summarises the use of cylindrical and spherical axes in GSA.
| Feature | Cylindrical & Spherical Axes Available |
|---|---|
| Constraint Axes: | yes |
| Restraints | yes |
| Joints (in GSS) | yes |
| Joints (in GsRelax) | no |
| Rigid Constraints | no |
| Constraint Equations | no |
| Link Elements | no |
| Settlements | yes |
| Grid Planes | no |
| 2D Element Properties | yes |
| Node Loads | yes |
| Applied Displacements | yes |
| Beam Loads | no |
| 2D Element Loads | no |
| Current Grid Axes | yes |
| Output Axes | yes (but data dependent) |