from The Century Dictionary and Cyclopedia
- n. A girder formed of a single plate of metal, or of a series of plates joined together.
Sorry, no etymologies found.
At 800-feet, it was the world's longest plate-girder, fixed arch bridge when it opened.
The Tacoma Narrows bridge was vulnerable to structural vibration in sustained and moderately strong winds due to its plate-girder deck structure. photo: US Navy/Photographer's Mate 3rd Class Bernardo Fuller