| StartFrame | StartFrame | The plane at one end of the beam, its Z axis aligned with the beam direction | Plane |
| EndFrame | EndFrame | Should be parallel to StartFrame | Plane |
| StartNode | StartNode | The plane defining the node the start of the beam attaches to. If none supplied this defaults to XY aligned | Plane |
| EndNode | EndNode | The plane defining the node the end of the beam attaches to. If none supplied this defaults to XY aligned | Plane |
| E | E | Young's Modulus | Number |
| A | A | Cross-section area | Number |
| Ix | Ix | 2nd moment of area about X | Number |
| Iy | Iy | 2nd moment of area about Y | Number |
| GJ | GJ | Shear modulus * torsional constant | Number |