A Queenpost Truss typically comprises two posts spread apart by a straining beam joined near their heads and supporting a tie beam (bottom chord) at their feet, and substantially braced by members rising from the outer ends of the tie beam to the heads of the queenposts. These main braces and the straining beam form the top chord of the truss. In service, the queenposts are in axial tension, although they are also compressed transversely between rafter and straining beam at their heads. The straining beam and main braces are in compression. The tie beam is in tension but, because of it's length and any loads imposed upon it, it is also subject to bending. It's common for the queenposts to have top tenons carrying principal purlins or principal rafters in the plane of the roof, but these members are part of the load on the truss rather than essential to its operation.

Now thats an idea. I think I made up one a while back we really like to use.

I say I think I did just in case I didn't...."Man I love getting old"...

Anyway. We call the point at which the vertical wall becomes a diagonal roof pitch the "control point". We like it. nice friendly little name but everyone in the shop knows what it means.

If we accidentally hijacked this thread just delete us LOL
Sounds great in general conversation too.

And its a lot short than "the spot where the vertical wall becomes a roof pitch diagonal line. LOL

If I hijacked this thread just delete me. I won't remember next week anyway.