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Publication date
Application filedfiledCritical
Priority to JP2204871UpriorityCriticalpatent/JPS5245070Y2/ja
Publication of JPS4717425UpublicationCriticalpatent/JPS4717425U/ja
Application grantedgrantedCritical
Publication of JPS5245070Y2publicationCriticalpatent/JPS5245070Y2/ja
E04C3/00—Structural elongated elements designed for load-supporting
E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
E04C3/11—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with non-parallel upper and lower edges, e.g. roof trusses