Arch Bridge: Forces
The arch is squeezed together, and this squeezing force is carried outward along the curve to the supports at each end. The supports, called abutments, push back on the arch and prevent the ends of the arch from spreading apart.
Building Big Home | Site Map | Labs | Databank | Glossary
Bridges | Domes | Skyscrapers | Dams | Tunnels
Local Wonders | Who Builds Big? |
Educators' Guide | Shop
This Web site was produced for PBS Online by WGBH.
Web site © 2000-2001 WGBH Educational Foundation.