box girder 10:36 Jan 28, 2018
Thanks for the comment and link, Michael. In my engineering days, I used to work underground as opposed to overground, so bridges are not my strength. Box girder makes sense to me. I have seen the terms 'hollow box girder' and 'hollow box' but I think hollow is superfluous in the first example and the second is not quite descriptive enough because it lacks 'girder'.
The first paragraph of the Wikipedia entry reads:
"A box girder bridge is a bridge in which the main beams comprise girders in the shape of a hollow box. The box girder normally comprises either prestressed concrete, structural steel, or a composite of steel and reinforced concrete. The box is typically rectangular or trapezoidal in cross-section. Box girder bridges are commonly used for highway flyovers and for modern elevated structures of light rail transport. Although normally the box girder bridge is a form of beam bridge, box girders may also be used on cable-stayed bridges and other forms."
I'll give it a little more time in case a bridge expert can comment further! |