Form Active Structures: Bridge Project Elizabeth Soyka

After combining numerous horizontal, vertical, and diagonal components, my partner and I created a 24" wooden bridge, composed of only 1/8" wooden dowels and glue. Spanning across a 21" distance, we then attached 3.3 pound weights one at a time until the bridge reached its breaking point at 46.2 pounds. The weights were attached by a piece being held at the 7" and 14" points on our bridge, and unfortunately it broke unevenly on one end due to the unequal amount of trusses that we had built. This error caused a larger portion of the weight to be put on one side of the trusses on one side of the bridge rather than equally across the span of the bridge, thus forcing one end of the bridge to collapse under the pressure rather than snapping in the middle like many of our classmates' bridges had. Learning from this, the next time I have to design something that will be structured in this way, I will know to make the trusses at an exact equal distance and to add more angled pieces to prevent the bridge from caving in.

Our design ideas.
Bridge constructed by myself and Niki Antunez.
Bridge designed with diagonal, vertical, and horizontal supports.
Diagrams depicting form and collapse of bridge.

Report Abuse

If you feel that this video content violates the Adobe Terms of Use, you may report this content by filling out this quick form.

To report a Copyright Violation, please follow Section 17 in the Terms of Use.