Balsa Bridge

What material is the bridge made of?

What is the strongest type of bridge?

A horizontal structure member supporting vertical loads by resisting bending. A girder is a larger beam, especially when made of multiple plates. Deeper, longer members are created by using trusses.

A positive, upward curve built into a beam that compensates for some of the vertical load and anticipated deflection.

Any action that tends to maintain or alter the position of a structure.