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My first bridge for the science olympiad

Hi this is Hyun Seok Yoon. As the title says, I just made my first bridge for Science Olympiad! Although it took me 12 hours (whew..!) I could see the good result! It held 15kg!


New Bridge design – 553lb (695 efficiency)

This is a very nicely built popsicle stick bridge. If you want to build a strong popsicle stick bridge, than I would suggest that try something like this. Because all the popsicle sticks are glue together, this bridge will have amazing lateral support. I used this idea on a lesser scale on my Prairie Popsicle Stick Bridge.


Nic’s Popsicle Stick Bridge

Nic’s design held a weight of 224kg and had a final efficiency of 1020. It did not shear or snap at any member, but bowed in the second third of member C-E. This member did have angled bracing to stop bowing and this brace did not snap it was only the glue joins in this brace that failed. The truss ballooned out at the point when 2.2kN of force was applied. It was at this point that the test was stopped


Pin Joint Popsicle Stick Bridge

At our college earlier this year, we had to build a bridge using popsicle sticks within one hour. We were provided with about 60 sticks, a cushion of office pins and a tube of super-glue. I have attached a picture of the bridge we constructed, that eventually won the first place. I’m sorry I don’t have a better picture to show you.


Popsicle Arch Bridge

These are the photos of a popsicle bridge that I made for a bridge building contest at my university in Spain. The weight of the bridge was 3.9kg, and the bridge held 700kg without breaking. This gives it an efficiency score of 180. The dimensions of underneath the arc are 90cm x 45cm.


Popsicle Bridge Holds 500 lbs.

Hi, I just wanted to share the excitement…by using ideas from your website (recommended by my son’s Cub Scout leader) my son Jackson and I were able to build a Popsicle bridge with approximately 125 sticks. It set a new record by holding 500 lbs. for about 15 seconds before breaking! Thanks for the great ideas…not bad for the first try


Seattle Annual Popsicle Stick Bridge Competition

The American Society of Civil Engineers has been putting on an annual popsicle stick bridge competition for high schools in western Washington for the last 13 years. Last year, I entered with a 350 gram, 30 inch long bridge that carried 567 pounds under their hydraulic press. They score the bridges on efficiency (I won at that!) and aesthetics.


Spaghetti and Straw Bridge

We found that it holds 5lbs so far and potentialy more, considering our first bridge broke with a large ball of string as the weight and our second broke with a coke can. I think our success rate was pretty high


Straw Bridge

Bridge constructed with drinking straws & spaghetti.  Pinned connections between straws with spaghetti. Bridge span across deck = 50cm, supported below at half span. Was skeptical about the bridge holding the weight of the brick but it do so easily.


Toothpick Arch Bridge

I just completed a new toothpick bridge that’s quite different than my last one. It’s an arch made from curved trusses, formed once again with toothpicks and wood glue. This one won’t be tested either (sorry!) because it was made for a friend who creates custom action figure dioramas. But I designed the bridge to have the highest ratio of maximum load to bridge weight and some ad hoc tests made me pretty optimistic


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