Here are the Jemes Res. glulam trusses again ... The truss ends (heels) bear inside the walls and on glulam columns that reveal a little into the living space. Note that one column dimension is chosen to match the truss member(s) width, with the other determined either by structural requirements or (oversized) for `look'. For example, a bare-bones minimum size column might fit entirely within the wall - but would not `reveal' the look of supporting the structure above. Likewise smaller truss members might be possible - especially with the really deep truss geometry - but, again, might not give the `look' of supporting the load above (potentially a lot of snow on the roof).