Water Lily Bridge
The Water Lily Bridge project is merely an adaptation of a natural solution to a structural problem, namely how it would be possible to support a pedestrian pathway structure (necessary to interconnect the different walkways), over water, without the use of pillars and their substantial impact on the natural environment? The solution sought had already been found in nature (in here skillful use of resources) in the water lilies structures, long before the discovery by Archimedes of his famous principle. The water lily, unlike trees for example, need not to create branches structurally rigid in order to withstand here leaves, allowing this task to the upward force produced by water and usually known as buoyancy. Its branches are not more than underwater cables that prevent the plant from being dragged by the currents.
As the idea matured other options arose. Since part of the structure was immersed this should permit the contemplation of the strange foreign environment, which inevitably led me to the option for Plexiglas (acrylic glass) for the lateral walls (witch is invisible in contact with water). The desired structure, to maximize this Biblical effect, would be in a delicate hydraulic balance, where the upward force made by the water should correspond to the weight of the hull and two ramps, since they are also supported at their margins. The side safety flaps were a solution to this problem, which allows a structural overweight since they increase the hull volume immersed when opened. Should also point out that the junctions of the safety flaps are made in transparent rubber profiles, thus allowing deformations.
The access ramps and bridge hull rise with the 6 ft tide, and both have mobile connections.
The fact that this creek be navigated only by canoes and kayaks led to the creation of a water bridge passage over the lower walkway.
In conclusion, this type of solution (Water Lily type Bridge) allows all sorts of possible forms for pedestrian walkways, provided they are properly anchored.
Energy production
In our initial researches, on the engineering available for the production of energy, we came across a type of solution provided by an American company, from Westmont (*), that depended exclusive on the natural water flow. This type of turbine, attached to a floating platform, didn't require the containing of large water portions, like in a dam, but it was able, from the natural river form and its normal water flow, to collect a substantial energy production without a significant environmental impact, in our view. In fact, and according to the available information, the environmental impact studies are still on going. The turbines present in the technical drawings, attached underneath the platform, are simply a sketch, and they do not represent any real available equipment, so it becomes difficult to predict any energy production estimation in the absence of a constant water flow due to the changing ties.
(*) - Hydro Green Energy
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