We were set a task to build 5 small bridges made only from paper and masking tape to span across a fictional river on an A1 piece of paper. Here are some that I created given the short amount of time.
Bridge 1:
For this design I decided to use the paper in cylindrical tubes to carry people from one side of the river to other. And as they are in tunnels, they will be covered from any bad weather or wind. The people can exit and enter from the slopes on each side of the tunnel. The tunnel is help up by two cylindrical pillars on either side.
Bridge 2:
With this design I used a simple slope design, sloping upwards and then sloping downwards at the other side, held in the middle by a cylindrical pillar which comes up from the base of the river. However this bridge could be dangerous when when as the slope may become slippery.
Bridge 3:
Here I cut the papers edges all the way across so that the paper could bend whilst also having sides which would act as hand rails for people walking across. This arch effect is aesthetically pleasing whilst keeping the design in a single piece structure.
Bridge 4:
I then reused bridge 3 by folding the bridge over and creating an oval with the arch. This would mean that the bridge would have an overpass as well as an underpass so that in case of heavy traffic people could use both pathways or if its raining, the person could have a choice of being under a roof.
Bridge 5:
This bridge is a simple tunnel design which can be places above the river, through the river and underneath the river as it is enclosed and protected from the elements.
Bridge 6:
Here I reused bridge 5 but cut a slit down the middle and turned it over. This bridge has dual entries so that people can enter from either direction which would free up traffic.
Bridge 7:
For this bridge I reused one of the cylinders from my first bridge but cut down the side of it so I could twist it. The people would walk up stairs on one side and then walk down a slope on the other side.
We were then set the task in groups to build a bridge made only from cardboard, bamboo, elastic bands and tape to span room one side of the room that had to be high enough so that the 'boat' could go underneath and strong enough so that a remote control car can drive over it without it collapsing or driving over the edge. Here is the bridge that me and my group built.
As you can see here, the structural integrity of the bridge was made up of just bamboo sticks and elastic bands to hold them in place and give them tension.
Our bridge was very sturdy and strong and survived the car being driven over it and the 'boat' being passed underneath it.
This is the remote control car that drove over it:
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