La gestion intégrée des eaux pluviales - AQUA-ADD Interreg IVC ...
La gestion intégrée des eaux pluviales - AQUA-ADD Interreg IVC ...
La gestion intégrée des eaux pluviales - AQUA-ADD Interreg IVC ...
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11<br />
Long-term<br />
projects<br />
EXPERIMENTAL URBAN<br />
REDEVELOPMENT PROJECTS<br />
TO REDUCE THE USE<br />
OF POTABLE WATER<br />
IN PUBLIC SPACES<br />
Development of Garibaldi<br />
Lyon<br />
Development of Rue Garibaldi in Lyon<br />
Rue Garibaldi from Rue Vauban to Avenue Berthelot is undergoing<br />
a requalification which should wipe away any memory of its<br />
“urban motorway” appearance. The objective is to create a new<br />
landscape, with the emphasis on pe<strong>des</strong>trianisation and green<br />
mo<strong>des</strong> of transport <strong>des</strong>igned intelligently with the car.<br />
An innovative “rainwater” component has been integrated<br />
in the project.<br />
2 nd life for a hopper<br />
The old hoppers had become empty spaces, one of them, «Vauban»,<br />
now has a very different future. It will be converted into<br />
a rainwater recovery tank. A backfill of sand and pebbles<br />
will filter the rainwater which will be routed into large vessels<br />
with a capacity of 800 m 3 . Pumped by the Sanitation Department’s<br />
vehicles, the water will be used for road-cleaning purposes.<br />
Another use has also been identified: the watering of new<br />
green spaces. This water will be re-used by means of hydrants<br />
supplied by the underground basin. The installation of this<br />
innovative equipment is regarded as experimental and as such<br />
will be monitored over its initial years of operation in order to<br />
obtain a sound feedback of experience so that similar equipment<br />
can be installed in the context of future projects.<br />
A complete restructuring of mo<strong>des</strong><br />
of rainwater management<br />
In addition to the re-use of a hopper and some of the rainwater<br />
for cleaning and green spaces, the project for the requalification<br />
of Rue Garibaldi incorporates more generally the need to<br />
manage run-off water at source by the collection, storage<br />
and percolation into the ground after pre-treatment, of<br />
rainwater from surfaces other than those dedicated to motor<br />
vehicles, by means of swales integrated in the green spaces<br />
created. The project thus provi<strong>des</strong> a significant improvement<br />
to the existing situation by the disconnection of some of the<br />
rainwater hitherto sent to the combined sewerage system.<br />
The percolation of this rainwater and the increase in planted<br />
spaces in this urban axis will also help to limit the urban<br />
heat-island effect in this city-centre district.
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