(under the class definition) Structure having adjustable means which is attached to a principal structure and which acts in compression, torque, tension or flexure to (1) correct deflection, warp or sag of the principal structure or (2) acts to reinforce one member of the principal structure so as to equalize the unit stress on the load-bearing members of the said principal structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
222, for a construction utilizing a tensioned or flexed facing.
223.1+, for means acting under tension to compressively stress a structure in which the means is incorporated.
640, for a curvilinear or peaked truss with means to vary its camber.
