Flagey While the site is still far from complete, a new controversy has arisen about whether the car would come in or the place. Everyone, including municipal authorities prefer underground parking. But now: it is flood ...
The storm basin of the Place Flagey, functional since late June, will be completed within two months after the installation of all equipment. Will remain the development of the area instead. But for now, uncertainty exists about the future of the plenum (space just above the slab covering the storm basin) should house a parking garage with 186 spaces. Everything seems
questioned since the announcement by the Region that the vacuum technique could be flooded in times of very heavy rains. Indeed, the valves will connect the basin to the car park to release the excess water from the basin. Hence the risk of flooding. The mayor Willy Decourty first question because the parking will be funded and managed by the county, said they could not take such a risk to the safety of motorists. Besides the potential damage to vehicles parked in this future car. Rather than incur this risk, he prefers outright development of surface parking spaces. The Brussels Region, who manages the place Flagey, refused.
questioned since the announcement by the Region that the vacuum technique could be flooded in times of very heavy rains. Indeed, the valves will connect the basin to the car park to release the excess water from the basin. Hence the risk of flooding. The mayor Willy Decourty first question because the parking will be funded and managed by the county, said they could not take such a risk to the safety of motorists. Besides the potential damage to vehicles parked in this future car. Rather than incur this risk, he prefers outright development of surface parking spaces. The Brussels Region, who manages the place Flagey, refused.
Years of study to arrive at this impasse
background to this controversy. When the municipality and the Region have decided late 90's, construction of detention pond at the Place Flagey, to prevent flooding in Gray Street, it was not originally planned to develop a technical vacuum . At the request of the county, the plans were modified to create this space, besides the expense of Ixelles. The purpose for this was obviously to be expected, later, an underground parking. She took over both the financing and the transformation of the empty parking technique. An agreement signed at the time attest.
"But everyone involved knew from the outset that this vacuum technique would be flooded," says Jean-Pol Rosiere, engineering director in the administration of water in the Region. Why, when we created a pool of 33,000 m3, there exists the risk of flooding? "There are two reasons," replied the engineer. "It is important to ensure communication between the pool and vacuum technology through valves (actually vents). First, if the storm basin, following heavy rains, had to fill, the water mass exert enormous pressure on the slab covering the basin. This slab is damaged. It would obviously these are exceptional rainfall of about 60 millimeters per hour (compared to a year, the average is 830 mm). The kind of rain that does not happen every ten years but maybe every 15 or 20 years. Maybe the storm basin of Flagey will never be filled completely, but obviously in this kind of disaster, there is no absolute certainty or zero risk. Second reason for the existence of valves. Parking is obviously related to the surface via a ramp. Imagine that event of heavy rains, surface drains clogging with leaves, paper, etc.. The water will rush in through the parking ramp. Again to avoid a mass of heavy water on the slab, it is necessary to evacuate this time in the storm basin. So it goes both ways. "
In the Region when the municipality decided to support the construction of his car, she was aware of these "technicalities". "But what is good for this car is also for any other underground infrastructure," said Jean-Pol Rosière. "Recently, Metro has Roodebeek been flooded. This may also occur elsewhere. I think the best solution would be to prohibit access to the parking days of risk ".
Still, the town had proposed an alternative to the famous valves: drain excess water not to the parking lot but to the ponds of Ixelles. "On paper it sounds perfect," replied the engineer. "One could imagine a weir height of the Avenue of the Golden Spurs. But do we agree to send wastewater to a site listed? Moreover, it would not be a panacea. "
short, after spending about 40 million euros (1.6 billion francs) in the construction of a stormwater detention pond (originally estimated at 25 million euros), and several years of study, common area and are faced with a dilemma: to keep or abandon the The idea of underground parking. The mayor Willy Decourty still prefer reintroduce the surface parking at the Place Flagey. The region, which depends on the development of surface marks his refusal.
"But everyone involved knew from the outset that this vacuum technique would be flooded," says Jean-Pol Rosiere, engineering director in the administration of water in the Region. Why, when we created a pool of 33,000 m3, there exists the risk of flooding? "There are two reasons," replied the engineer. "It is important to ensure communication between the pool and vacuum technology through valves (actually vents). First, if the storm basin, following heavy rains, had to fill, the water mass exert enormous pressure on the slab covering the basin. This slab is damaged. It would obviously these are exceptional rainfall of about 60 millimeters per hour (compared to a year, the average is 830 mm). The kind of rain that does not happen every ten years but maybe every 15 or 20 years. Maybe the storm basin of Flagey will never be filled completely, but obviously in this kind of disaster, there is no absolute certainty or zero risk. Second reason for the existence of valves. Parking is obviously related to the surface via a ramp. Imagine that event of heavy rains, surface drains clogging with leaves, paper, etc.. The water will rush in through the parking ramp. Again to avoid a mass of heavy water on the slab, it is necessary to evacuate this time in the storm basin. So it goes both ways. "
In the Region when the municipality decided to support the construction of his car, she was aware of these "technicalities". "But what is good for this car is also for any other underground infrastructure," said Jean-Pol Rosière. "Recently, Metro has Roodebeek been flooded. This may also occur elsewhere. I think the best solution would be to prohibit access to the parking days of risk ".
Still, the town had proposed an alternative to the famous valves: drain excess water not to the parking lot but to the ponds of Ixelles. "On paper it sounds perfect," replied the engineer. "One could imagine a weir height of the Avenue of the Golden Spurs. But do we agree to send wastewater to a site listed? Moreover, it would not be a panacea. "
short, after spending about 40 million euros (1.6 billion francs) in the construction of a stormwater detention pond (originally estimated at 25 million euros), and several years of study, common area and are faced with a dilemma: to keep or abandon the The idea of underground parking. The mayor Willy Decourty still prefer reintroduce the surface parking at the Place Flagey. The region, which depends on the development of surface marks his refusal.
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