Yes, I guess. But if you need to visualise the structure, it may be easier to download structural elements as objects/furniture. You could look for 'charpente' in Collada / DAE format on http://sketchup.google.com/3dwarehouse/ - just drag and drop zipped file into your model.

For instance this
example of roof structural framework DAE format

PS - thanks for pointing me to the word.
NO: takstol = FR: charpente de toiture
anyone know it in English? Roof Structure?