Origin of girdergird + -er
a large beam, usually horizontal, of timber or steel, for supporting the joists of a floor, the framework of a building, the superstructure of a bridge, etc.
A beam, as of steel, wood, or reinforced concrete, used as a main horizontal support in a building or bridge.
- The underside of the stiffening girder is 82 ft.
- It is the junction between the Oudh & Rohilkhand and East Indian railways, the Ganges being crossed by a steel girder bridge of seven spans, each 350 ft.
- On the first English railways cast iron girder bridges for spans of to 66 ft.
- Each girder is 1511 ft.
- A main girder consists of an upper and lower flange, boom or chord and a vertical web.