Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; {Braces} of metal {beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts}
Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; {Braces} of metal {beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts}