Truss

Trusses allow you to install all the lights that you will use for the scene.

They are generally installed on the ceiling, or, sometimes, on mobile lattices for ease of maintenance.

It is of paramount importance that the trusses you use be of high quality: just imagine hundreds of lights on a truss falling down on the scene, over the people who are in it...

Installing lights on a truss has its own logic too. On a ceiling-truss, for example, are generally installed all the white lights, which are used to properly and evenly light the whole studio.