Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. architectural elements
7. [structural elements and components for structural elements]
8. structural elements
9. [spanning and projecting structural elements]
10. [trusses and truss components]
11. trusses (structural elements)
12. [trusses by form]

Narrower term/s

• fan Fink trusses

Anotations

Scope note:

Refers to a variety of symmetrical trusses: those in the form of three isosceles triangles with one triangle in the center with its base along the bottom chord and each of the outer two triangles having its base along the sloping side at an upper chord, or those in the form of triangles with diagonal members forming W-shapes, or those in the form of rectangles with few verticals in proportion to numerous diagonal web members of different lengths.