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Embed code for: Bridge [PPT]
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ALL BY :TOBY ARDLAN COCO JOANNE
The product must can hold on the wind, earthquake, sun or shaking.
The wide of the bridge not less than 30cm.
The depth of bridge not less than 1cm, so the bridge will looks more firm
The height of the bridge not less than 40 cm.
Our bridge needed balance, that means when we finished it, it must be stand by itself.
Our goal of this activity is build a hard bridge that can hold most of disasters. We made this bridge for people cross the sea.
Statement of problem
We draw a blueprint that we will follow it.
We bought all the materials that we needed.
We cut the board into three parts that can support the pier. And then cut two holes.
We put the wooden
poles in the two holes. We used the hot melt adhesives to stick board and the holes.
We used the Electric drill to drilling the holes on the wood board and the poles. And we used the wires to connect the board that can make the bridge harder.
We made four small piers that can support the big piers.
We almost finished our bridge, but actually it cannot stand straightly, we used some wood to make it harder, but anyway, it is so ugly and no matter what do, it still cannot stand straightly and also that is easy to shake.
1. Measure the dimension of building
Actually it is too long that the height is not similar as the long, the bridge is easy to fall down and that scale is not beautiful.
2. It can withstand environmental forces
We used wind to punch the bridge, it can stand up but not straight.
We shake the bridge as earthquake, the bridge shake a little as well
We put some heavy thing on the bridge and it can hold on.
We have to make it harder that the bridge is easy to shake, because the force of the tower cannot hole on the bridge.
a. Use a fan to imitate wind gusts
It can stand up but not straight.
It can stand up and not shake.
It can stand up and shake a little
We should put some heavy thing under the bridge that can make the bridge harder and heavier.
b. . Shake the table gently to imitate an earthquake.
It will shake as well.
Almost good, it only shakes a little.
We should make the part where we connect two boards be harder.
c. Put some heavy thing on the bridge to imitate the car
It can hold on the heavy thing.
It can hold on the heavy thing and very hard.
The bridge can hold on a lot of thing.
2 . 0
We decide to use the rest of materials to make a new bridge and this time we corrected some mistakes. We found we should paint the color lastly, at first we cut the board as our road, but we changed our size that is 150cm-long.
It is better than first one.
We used wind to punch the bridge, it can stand up.
This bridge can hold on most of forces.
It can stand up and straight.