research & investigation
has great natural strength. Thousands of years ago, Romans built arches out of stone. Today, most arch bridges are made of steel or concrete, and they can span up to 800 feet. a truss bridge consists of an assembly of triangles. Truss bridges are commonly made from a series of straight, steel bars.
suspension bridges can span 2,000 to 7,000 feet -- way farther than any other type of bridge! Mostsuspension bridges have a truss system beneath the roadway to resist bending and twisting.
beam bridges consists of a horizontal beam supported at each end by piers. The weight of the beam pushes straight down on the piers. The farther apart its piers, the weaker the beam becomes
posted by lucas @ 9:28 PM
1 Comments
1 Comments:
Well done boys. Your Blog looks great. Don't forget your post titles needs to follow the same path as you the design process. You have not yet posted the design situation or problem statement. Keep up the good work.
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