A horizontal support member similar to a beam. Some people maintain that girders span from column to column, and beams span from girder to girder. Other people maintain that beams span column to column and girders span from beam to beam.
A horizontal support member similar to a beam. Some people maintain that girders span from column to column, and beams span from girder to girder. Other people maintain that beams span column to column and girders span from beam to beam.