ᐅ Roof Structures – Prefabricated Trusses / Clear-Span Trusses

Hello,
I have been searching a lot, but I’m still confused about the different types of truss constructions, especially regarding their appearance.
It’s about a prefabricated truss and a clear-span truss. Could someone explain the difference?
Prefabricated trusses arrive at the construction site ready to install. Once assembled, it seems you can hardly walk on top without stepping over a beam every couple of steps.
Clear-span trusses also arrive ready for installation, but on top you have a space like a small room or a mini room—where you could, for example, dance.
Which one is better? And how do they compare in terms of cost? Is there a big difference?

Thanks for your help!

"Prefabricated trusses" is the general term. However, there are different types:

See here:

link removed by moderation; building expert

Often, the trusses also serve as the ceiling structure, meaning the bottom chord is designed as a ceiling joist. Alternatively, a truss can be placed directly on an existing ceiling.

So, it depends on your installation situation.

Yes, I know that these are all prefabricated trusses, but somehow the difference between a prefabricated truss construction and a freiraumbinder (open-web truss) construction isn’t really clear to me. The term prefabricated truss is confusing because a freiraumbinder is also a prefabricated truss, just a different shape/type. Or maybe they simply mean that the roof is built as a prefabricated truss construction in general…

In the conversation, she said that the freiraumbinder is significantly more expensive, but it’s also a prefabricated truss construction… Really confusing…

Oh, and the trusses are placed on an already existing ceiling, so they do not serve as the ceiling themselves.

Then it’s more like this:

link removed by moderation; building expert

The term “open-web joist” is actually confusing because it’s not really a joist anymore, as the bottom chord is missing in this case. “Prefabricated roof truss” is a more accurate term, although it’s likely delivered in two parts due to its size, so it’s not completely finished yet either.
What roof pitch do you have?

Unfortunately, Bauexperte removed the link.
Our roof pitch is 25 degrees. With a prefabricated truss construction, there is actually no surface to stand on, right? Isn’t everything connected by braces crisscrossing everywhere? So you basically always have to step through or over some beams.
We would like a design where there is a small standing area at the top without having to step over beams, so that if the sides were clad, it would create a small storage space of a few square meters (square feet).