Girders provide the main support in buildings and bridges, often bearing the weight. The old mill was reinforced with new girders.
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Industrial Material
Girders are commonly made from steel or iron, materials chosen for their strength. Iron girders form the skeleton of the skyscraper.
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Technical Term
The word 'girder' is technical, used in construction and engineering contexts. The civil engineer explained the function of each girder to the students.