Students design and build truss bridges, then test the strength of the bridge by attaching a scale.
Step 1: Materials and tools
Materials and Tools
- Craft sticks (at least 100 per student)
- 4” cable ties (at least 15 per student)
- Glue guns
- Hot glue sticks
- Alternative: use tacky or white glue
- Cardboard or newspaper to protect work surface
- Hanging scale
- Strong cord/rope/etc
- Carbine hook or similar device
- Truss bridge patterns (attached PDF or download image)
Step 2: Advanced Ideas: Truss Armor / House Frame
Truss armor is made of a simple craft stick and cube construction, but includes a handle near one end. This allows the user to grasp the structure from within and wear it like armor.
Another alternative is the house frame. Although it does not rely heavily upon trusses for it's sturdiness, it does show the basic idea of what timber looks like within the frame of real houses.