BUILDING BIG Bridge basics
Bridge Basics
Tuesdays in October on PBS (check local listings) _  

Bridges | Domes | Skyscrapers | Dams| Tunnels

Forces that act on a beam bridge.

Beam Bridge: Forces
When something pushes down on the beam, the beam bends. Its top edge is pushed together, and its bottom edge is pulled apart.


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BUILDING BIG is a coproduction of the WGBH Science Unit and Production Group, Inc., and is presented on PBS by WGBH Boston.

Major funding is provided by the National Science Foundation. Additional funding comes from the National Endowment for the Humanities, The Arthur Vining Davis Foundations, the Corporation for Public Broadcastin, and public television viewers.

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