ᐅ Insulation of the upper floor ceiling

Hello dear members 🙂

Can someone explain how the attic conversion of a pyramid roof with a nail truss construction works?

Specifically, I am interested in how the OSB panels are installed to make the attic space usable as a walkable area. You can’t just lay them down directly because the vertical truss members are constantly in the way.

Is an additional framework built between the main beams to support the OSB panels?

Thanks in advance for your answers 🙂

In our case, it was called a storage truss. In the central area of the attic, there is a space of 3m x 14m (10 feet x 46 feet) without any vertical beams.