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: : 1. THE LAWN BETWEEN VIALE WASHINGTON AND THE BANK EDGE
: : 2. RIVERBANK
: : 3. THE BEACH DOWNSTREAM FROM THE WEIR AT ISOLOTTO


planning area

Visual and physical access to the Arno river banks have been gradually limited by water regulation and wall building so that for tourists and Florentines alike the only connection to the river is in the historic centre along the Lungarno, the street that runs alongside.
The famous Passeggiata, which borders a stretch of the river in the Cascine Park, is a wide asphalted promenade with no direct contact to the

 

planning area
banks. We chose this area for our experiment, at present only used by fishermen, joggers or dog owners.

This project would provide an opportunity to restore the fragile environment of the Arno river: an extraordinary resource, presently hidden between its banks, which could be an attractive recreation and pleasure spot reunited with its city..

The pilot project for the city of Florence is referred to a significant stretch along the riverbank in the Parco delle Cascine and it includes the following interventions:

 : : THE LAWN BETWEEN VIALE WASHINGTON AND THE BANK EDGE


actual state
 


project simulation of expected results


The level portion of lawn along Viale Washington is currently in a poor state of preservation. The excessive growth of grass varieties is noticeable, as they are not mowed by regular interventions, leading to the diffusion of undesirable species. This state of things makes it impossible for the users to stop or take walks here. Near the stretch closer to the riverbank, the soil is highly tamped, which causes the total loss of grass, mainly due to the transit bicycles and pedestrians. In time, in fact, a sort of "track" has formed that invites cyclists to use this space instead of Viale Washington or its access road. The deep tracks left by the machines used for the yearly mowing operations are also noticeable.
On the Parco delle Cascine side, there are some large Populus Alba planted in a tier. On the riverbank edge, some young plants of Robinia Pseudoacacia, also planted in a tier.

 


The final objective is to obtain a large lawn space that can be used exclusively by pedestrians, for walks and to stop outdoor near the Arno course.
An itinerary has not been proposed by choice, as the area already presents a sufficient road network (Viale Washington and its access road), while it lacks wide grassy areas near the river for outdoor activities. This choice may also divert part of the load already weighing inside the Parco delle Cascine, by offering the users an area with visual features undoubtedly interesting even though not as stimulating from an historical point of view. Project simulation of results expected from interventions to the lawn on top of the riverbank.


 : :RIVERBANK


actual state
 


project simulation of expected results


The riverbank stretch concerned by the intervention, which is situated on the right side of the river, has such a section that direct access to the river course is not possible without using the ramps for hydraulic maintenance.
The grass cover does not seem to undergo regular maintenance. In fact, during the hot seasons, grass can grow so high that any use of the area is discouraged.
Hydraulic maintenance interventions are carried out in the area concerned by way of mowing without any selection of the natural riparian species, thus preventing the growth of isolated trees or of low-density tree formations.
The riverbank foot is subject to lateral erosion phenomena that could worsen with the development of leisure navigation, which would increase the transversal wave motion that is responsible of such events.

 


The final objective is that of obtaining a lawn treed with riverbank vegetable species of different ages that would increase autonomously through preservation and growth of young plants that are naturally reproduced. The maximum density of this topsoil that is be compatible with the current river hydraulic management would be of at least 15 ml distance between each trunk.
Levelling of the riverbank near the Arno watercourse is required, with a slope of about 10% and a transversal development of about 5 m. such intervention allows the reduction of erosion processes without intervening with heavy and costly operations, which would not be very appropriate for the dynamics of this stretch of the river.
The average transversal width of the riverbank and the inclination that characterise it suggest the realization of two tracks with a section of 3,50 ml that could be used both for the riverbank management and for leisure.


 : :THE BEACH DOWNSTREAM FROM THE WEIR AT ISOLOTTO


actual state
 


project simulation of expected results


This area, placed in the proximity of the bank access ramp in the riverbed, seems to be the only stretch of the park area allowing access to the riverbed. It is an area with a light slope, partly grassy and partly covered by gravel from the river deposits that are due to the river course being slowed down by the weir upstream.

 


The area outside the riverbank remodelling interventions, only a re-outlining of the ground in order to reduce the greater irregularities to favour the formation of a more homogenous vegetation hat would subsequently be more easily accessed. Such interventions do not concern surfaces with deposits of gravel or pebbles directly in contact with the water, where no alteration is required.

 

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