(under the class definition) Structure peculiar to an in situ erected primary, load bearing construction which as a whole forms a curved arch whose mid-point is above the externally supported terminal edges.
SEE OR SEARCH THIS CLASS, SUBCLASS:
67, for a telescoping three-dimensional section which may include a curved segment.
80.1+, for a compound curve cover.
85, for a settable material, curved, entrance archway.
245+, for a space enclosing, curvilinear wall.
319+, particularly subclasses 329 and 389 for a generally planar concrete barrier which may include a curved backing member supporting a cast section. 575, for a key type block, per se, which can be used to form a curved arch.
639+, for a curvilinear or peaked truss.
SEE OR SEARCH CLASS
14, Bridges,
24+, for an arch bridge which is not primarily of stone-like material.
