Are these trusses self-supporting?

[AlDahl]

Hello!

I just moved into a Gullringshus from 1965.
Curious if anyone knows if these trusses are self-supporting?

 

[fahlis]

Looks like self-supporting truss roof trusses from the 1950-70s model, taken directly from the National Housing Board's drawing collection "Trätakstolar till mindre bostadshus" ...