You can have Tekla Structures scale loads when you are modeling. This ensures that loads are not too small to see, or so large that they hide the structure.
On the File menu, click Settings > Options , and go to the Load modeling settings.
On the Arrow length tab, enter the minimum and maximum sizes for load types.
Define that point loads with magnitude of 1 kN or less are 500 mm high in the model, and that point loads with magnitude of 10 kN or more are 2500 mm high. Tekla Structures linearly scales all point loads that have magnitudes between 1 kN and 10 kN between 500 mm and 2500 mm.
The units depend on the settings in File menu > Settings > Options > Units and decimals.