Just like you can see from many roof truss types pictures, the Fan Truss comes with a very simple design and it’s made out of steel. In this particular situation, the trusses form a fink roof truss. On top of that, the main characteristic here is that the top chords are split into smaller lengths, as this allows the build to obtain purlin support. Also, you get a medium span with this type, around 10-15m, which is more than enough for most projects.