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SECME – Balsa Bridges Presented By: Michael Olka P.E.

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Presentation on theme: "SECME – Balsa Bridges Presented By: Michael Olka P.E."— Presentation transcript:

1 SECME – Balsa Bridges Presented By: Michael Olka P.E.

2 What are the teams responsible for building? The superstructure only The support is supplied at the testing site

3 Balsa Size Restrictions Maximum Member cross section is ¼ by ¼. Students are allowed to laminate smaller members to create larger ones, however this built- up section may not exceed ¼ by ¼. ¼ ¼ ¼ ¼

4 The Supplied Support 38 cm 6 cm 10 cm

5 Testing Machine Leave the center open

6 Ranking of Bridges The Bridges are ranked according to the Strength to Weight Ratio. Not the Maximum Load. *The higher the ratio the more efficient the bridge.*

7 Example of the Ratio Bridge A: Weight: 100g Load: 45,359g (100lbs) Bridge B: Weight: 50g Load: 27,215g (60lbs) SWR: 453.59SWR: 544.31


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