scissor truss scissor truss queen-post en.wikipedia.org/wiki/Timber_roof_truss#/media/… en.wikipedia.org/wiki/Timber_roof_truss#/media/… en.wikipedia.org/wiki/Timber_roof_truss#/media/… framework scissor truss scissor truss English scissor truss en:Timber roof truss en.wikipedia.org/wiki/Timber_roof_truss#/media/… en.wikipedia.org/wiki/Timber_roof_truss#/media/… Trusses cannot be disassembled queen-post