Kefismos: “There is a need for control but there is no question of static adequacy,” says Efthymios Lekkas about the underground lake

The Professor of Dynamics and Applied Geology and the President of the OASP appears for the third basement that was located in . Speaking to ERT, Professor of Dynamics and Applied Geology and President of the OASP stressed that he needed control, he pointed out that there was no issue of static proficiency due to the . “Ponds are common in tiled pipelines or encased rivers. Controls should be carried out at regular intervals, there is no question of static adequacy,” he stressed. “I don’t think there is a question of static proficiency in Kifissos and the highway above Kifissos, but in any case there is a need for a check to be made by special civil engineers, who will determine whether there is damage to the walls of his bed, encased bed,” he said. CORVERSE He specifically said that “the lakes are something common in tiled pipelines or encased rivers since the corrosive energy of the water that flows first erodes the bottom. Of course, on the walls of the encased river we do not know what condition it is in. Apparently they don’t have a big problem, that is, they don’t have corrosives, there’s no corrosion of weapons. I therefore do not think that there is a question of static proficiency in Kephisus and the highway, above Kephisus, but in any case there is a need for a check to be made by special civil engineers, who will determine whether there is damage to the walls of the encased bed to see if there is any such matter.” ‘To draw water to restore erosion’ He added “it is another strength of the base of the encasement and is another strength of the walls. The walls carry loads. The base does not carry loads just can be eroded by water the walls carry loads and it seems that we have no damage there. Of course this does not absolve us of control, which should be done at regular intervals. Of course, they must be pumped (st. waters) to substantially restore erosion. There, of course, should be repositioning of all the weapons that were destroyed and also concrete so that water says much easier down.” At another point he said: “The risk that exists is great, since there is great movement, is the main axis of the basin. From then on, however, what you have rightly pointed out again is the issue of culture. Here in Greece we do not have the culture of preserving the works. There is no control over the works after their construction. Usually left to their luck[…] Of course, there is a great effort by the Technical Chamber of Greece to record the bridges, to have control and monitoring systems of the deformities and other data that we must have at central level for all the bridges in the country. Therefore, there is a process in progress to monitor all technical projects, to monitor mainly bridges, which are of particular importance not only to Kifissos but to all Greece. I think we are on a good track, but we must improve the level of maintenance of all projects throughout Greece.” “If there is a chance if we look at Valencia images, Mr. Lekkas said that “according to the observations we have had since the first moment of the transition to Valencia, it is that we need to review our design at global level, because the climate crisis is ongoing. Things aren’t as they were 10 or 30 and 40 and 50 years ago have changed. Therefore our design should be changed,” he noted and added: “It’s not just that though. We have not understood at a level sufficient natural processes or physical phenomena. It was evolving and developing with particular intensity and in the following period, it was evolving millions of years ago. We were planning on the basis of the knowledge we thought were right. Unfortunately the example of Valencia is an example that overthrows our philosophy of project design, which tells us that here we are dealing with new data.”