Rotating model elements

Hello, I want to rotate these families around the centre point like as shown in the image. Please tell me the particular nodes to used. And if i want to download any package from Archi- Lab, then which one? Also it would be better if rotation angle came from excel input.

ii.dyn (143.5 KB)

The image does t show them rotating but translating along the Z axis so they reach the bottom of the slab.

Likely you want to use an Element.MoveByVector node, or an Element.GetLocation and an Element.SetLocation node for this.

No No its actually another image. Its superelevation. Rotation about centre.