... no balls rolling. I'll just imagine I could possibly help someone else with the principal of discussion :rolleyes:
Here's another consideration; the wall system.
In the case where the strut remains perpendicular to the roof slope, the top of the strut (and plate) would coincide with the depth of the wall system (whatever that may be) making for some awkward fitting around braces etc. This does not fit into the context of an easy selfbuild !
Angling the strut 10deg steeper will allow it to remain wholly within the living space. The wall-fitting will be simpler, though it must still work around strut braces.
