with non-parallel upper and lower edges, e.g. roof trusses

Full Title

Structural elongated elements designed for load-supporting > Joists; Girders, trusses, or truss-like structures, e.g. prefabricated; Lintels; Transoms > of metal > with non-parallel upper and lower edges, e.g. roof trusses

Classification Context

Section:

FIXED CONSTRUCTIONS

Class:

BUILDING

Subclass:

STRUCTURAL ELEMENTS; BUILDING MATERIALS