You can attach loads to parts or locations for modeling purposes.

Attaching a load to a part binds the load and the part together in the model. If the part is moved, copied, deleted, etc., it affects the load. For example, you can attach a prestressing load to a part, so that the load moves with the part, and disappears if the part is deleted.

If you do not attach a load to a part, Tekla Structures fixes the load to the positions you pick when you create the load.