Example: Add a Lining to the Framework

The lining is built from the following element hierarchy.

Note:
Additional bars have been added and BAR 1 has been shifted down to allow for the liner thickness. These processes are not documented in this example.

It is possible to apply relative position changes to the SUBS, EXTR and VERT elements in the hierarchy. There is no need to consider changes occurring as a result of height difference because the liner is located under the datum of the duct being supported. Differences in width must be accounted for. Each vertex of the liner must be configured to move relative to any difference in width. Vertexes 1 and 4 must respond to width changes in the west direction and vertexes 2 and 3 must move in the east direction.