Assertion: mullion's member | /r/HasProperty | pivoted in the plane of the wall
Facets:
value: to horizontal positions
type: PURPOSE
Source sentences:
text: Because of the nature of the interconnections between the rail members 64 and the mullions 22, the mullions can all be erected first, and the members 64 thereafter diagonally disposed relative to the mullions and pivoted in the plane of the wall 10 to horizontal positions.