After concluding, the day before that we would need to change our design to make it lighter and adapt more with the existing environment; we decided to remove the two smaller dome and make those landings, we kept the big donut one in the middle as that would be our “WOW” point of the bridge making it memorable for anyone who would use it. By removing the two smaller domes, this meant that we would be using ramp and not elevators.
We had to start looking at ramp requirements, to make sure our bridge met the restrictions but we did not want the ramp to be too steep for cyclists, due to market research we found that the desired steepness was 4%.
Most of day was spent considering how we could build a bridge that would meet the ramping restrictions which we found out that for every 10m a landing is needed.
The drawing above shows the development drawing, of the bridge once we decided to go for the ramps. We also had to look at the diameter of the donut we went for 8m radius, to accommodate, for both cyclists and pedestrians.
We went for arches supporting the donut shape as this would allow vehicles to pass through under as well as not take too much space on the path, as we are trying to cause the least amount of distribution when installing the bridge. The donut would need to be 5m off the ground, as this is the recommended height for bridges. We came up with covering the path with hardened glass, as it’s transparent and durable people would be able to appreciate the surroundings, and be protected from weathering and any accidents.
Later, in the day we started making the model of our bridge we decided to make our model 1:200 thinking it could work but little did we know we would be wrong……..
The image above shows our 1:200 model.