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<p>some with simple designs that were among the first bridges designed in the 19th and early 20th centuries. A truss bridge is economical to construct primarily because it uses materials efficiently.</p>

<p><big> Design </big></p>
<p>The nature of a <a href="page.php?w=truss">truss</a> allows the <a href="page.php?w=analysis">analysis</a> of its structure using a few assumptions and the application of <a href="page.php?w=Newton%27s_laws_of_motion">Newton's laws of motion</a> according to the branch of <a href="page.php?w=physics">physics</a> known as <a href="page.php?w=statics">statics</a>.</p><p>
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