Step 1: Materials
- Popsicle sticks
- Hot glue
-block of wood
Step 2: Procedure:
Sketch the two Bridges
Call the two bridges Bridge A and Bridge B. Make sure the length (40 cm), the width (1 popsicle stick), weight and material is the same for both bridges.
Hot glue is faster to use, but it isn't as sturdy as the other glue. For most of the bridge we used hot glue because we needed the glue to dry fast so that the pieces did not move.
We made sure that the weight was the same for both bridges. Both of our bridges weighed 327 Grams
Step 3: Step 1: The walking piece
Step 4: Step 2: Triangle Pieces
Take the triangle pieces and connect them together. Four on each side. The remaining three will be used on Bridge B.
Lay out four popsicle sticks put two right next to each other in the middle and one on each side away from the two sticks. They should only be the length of one popsicle stick. Take one poepsicle stick and place it so it is diagonal. Then do this to the other side. Attach a popsicle stick across the whole thing to hold it together.
Now that you have the triangle pieces made put four in a row and attach them using the popsicle sticks.
Step 5: Bridge A
When you do this step you have to hold the triangle pieces up so that when you place them on it will fit perfectly.
Step 6: Bridge A
Step 7: Bridge A
Cross the popsicle sticks across the bottom to hold the bridge together and make it stand up. The more of the sticks you use the sturdier it will be. Make sure you do not make the bridge to heavy.
All you do is attach the popsicle sticks by crossing them on the bottom so that the sides stand up straight.
Step 8: Bridge A
Step 9: Bridge B
First you make both sides of the archway and then you attach a triangle piece to connect them. Add a total of three triangle pieces to hold the whole thing together.
Step 10: Bridge B
Step 11: Bridge B
You will need to cut the popsicle sticks to make them fit properly. This part is very similar to the triangle pieces. Make triangle because it is stronger.
Step 12: Bridge B
Lay out the popsicle sticks and connect them using more popsicle sticks. This railing should be the length of the bridge.
Step 13: Bridge B
This piece is to help sturdy the bridge. You attach it diagonally because it is stronger this way.
Step 15: Testing the Bridge Designs
- Make a hole in the bridge
- Connect the rope to the bucket and pull the rope trough the hole you made, than pull the rope through a block of wood, so the weight is equal distributed over the bridge.
- Start adding weights in the bucket, till the bridge breaks.
- Now do the same thing with bridge B
Here are some of the pictures we took while we tested each bridge: