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Truss Bridge's Arch Enemy

CSEF · 2004 Structural Capability & Strength of Materials (Junior Division Only)

Maxwell M. Mileck · Eel River Charter School, Covelo

Overview

Objectives/Goals To discover which bridge has the structural strength to withstand more weight, the arch or the truss. Methods/Materials I constructed the two bridges using paper and glue. I made two bridges of equal length. I applied sand as a weight in 150-gram increments. I added weight until the bridges collapsed. I then repaired the bridges and retested them. Results The truss bridge held much more weight than the arch bridge. Conclusions/Discussion To span gaps I would use the truss bridge, not the arch bridge, because it is stronger.

Summary statement

Testing the strength of arch and truss bridges.

Help received

Parents helped organize project.

Competition history

  • CSEF 2004 Structural Capability & Strength of Materials (Junior Division Only) · Entry J1812

Resources

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