For 5m span, front of concrete prefab. It was a simple king post truss
design, with the bottom of the king post also bolted via a bracket to a
vertical post netween the two sets of opening doors (1 pair each side)
where the word "then" in the pic. is.

The new truss reduces the height of the apex, as well as raising the
eaves height for headroom inside. It will probably also be fixed to a
vertical central post under to floor.

Rough sketch at: https://i.ibb.co/7JH1NHn/IMG-20210607-182851-1.jpg

Any ideas for new bracing? It's in 30mm by 30mm by 3mm equal angle.