| Grid Plane | P | Grid Plane (Axis + Elevation) | Plane |
| Grid Plane ID | IdG | Grid Plane ID | Integer |
| Grid Plane Name | NaP | Grid Plane Name | Text |
| is Storey? | St | Grid Plane is Storey type | Boolean |
| Axis | Ax | Grid Plane Axis as plane | Plane |
| Axis ID | IdA | Axis ID | Integer |
| Elevation | Ev | Grid Plane Elevation | Generic |
| Grid Plane Tolerance Above | tA | Grid Plane Tolerance Above (for Storey Type) | Generic |
| Grid Plane Tolerance Below | tB | Grid Plane Tolerance Below (for Storey Type) | Generic |
| Grid Surface ID | IdS | Grid Surface ID | Integer |
| Grid Surface Name | NaS | Grid Surface Name | Text |
| Elements | El | Elements that Grid Surface will try to expand load to | Text |
| Element Type | Ty | Grid Surface Element Type | Text |
| Grid Surface Tolerance | To | Grid Surface Tolerance | Generic |
| Span Type | Sp | Grid Surface Span Type | Text |
| Span Direction | Di | Grid Surface Span Direction | Number |
| Expansion Type | Ex | Grid Surface Expansion Type | Text |
| Simplified Tributary Area | Sf | Grid Surface Simplified Tributary Area | Boolean |