From Cement to Bridge |
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Authors: | Nelson, Robin |
Topics: | Planes, Technology |
Lexile: | 350, |
Publisher: | Lerner Publishing Group |
ISBN: | 9781575058115, |
Classification: | Non-Fiction |
Number of pages: | 26, |
How is a bridge built? Cement is mixed with water and rocks to make concrete. The concrete is poured into holes and into blocks that are stacked to make a bridge. Once fences and lights are added to the bridge, cars can drive across it.
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