A structure is a 3D shape made from different materials and parts. Some can be simple to build, such as a wall. Others can be complex, or harder to build, such as a bridge or a building. The strength ...

Model a deck-truss arch bridge. The bridge in the segment is an under-deck-truss arch design. To help students understand what gives a bridge its strength, and the specifics of the Minneapolis bridge ...

truss — A framework of triangulated forms in which all loads are carried by compression or tension in each member of the frame. It is time for the fire service to make peace with an old nemesis: the ...