This self-supporting bridge uses only stacked and interlocking craft sticks—no glue, tape, or string! Each piece presses against the others to create tension and compression, which keeps the whole structure standing strong. As weight is added, the bridge actually gets more stable (up to a point!).
Materials needed:
- 15 Craft Sticks
This Da Vinci Bridge stays up using smart forces and clever design. Here are the key concepts at work:
Compression (Pushing Force)
Each stick in the bridge pushes down on the one below it. This pushing force is called compression—it helps the whole structure stay solid and balanced.
Tension (Pulling Force)
At the same time, the sticks also pull slightly against each other to stay in place. This pulling force is called tension—it keeps the bridge from falling apart or sliding out.
Friction
Where the sticks touch, friction helps stop them from slipping. The rougher the surface or tighter the fit, the more friction you get!
Simple Engineering
The bridge is strong without tape, glue, or nails! It teaches us how to build things using smart shapes and force—not just sticky stuff.
Try changing the number of sticks, the spacing, or the size. What makes the bridge stronger? What makes it wobble? Explore how small changes affect big results!