METHODOLOGY FOR THE DESIGN OF SUSTAINABLE URBAN DRAINAGE SYSTEMS IN URBAN ROADS

Abstract

The investigation attends to the risk of flooding in urban roads of intermediate cities, because it has been noticed that the sewage system is not sufficient to drain runoff water during the rainy season in the city of Machala, therefore we will analyze alternatives to minimize the flows that go to the drainage system and thus control flooding. We analyze the affectations in winter storms in the area that presents flood points adjacent to the city's drainage channel to later propose a sustainable drainage design methodology through drainage management criteria that allow the reduction of flood risks in urban roads. For the SUD's proposal, the elements, drainage, flow and flooding of urban roads were analyzed, in addition to the physical and environmental context. The SUD was selected based on the building typology of the city. Finally, as a result of the design, a permeable pavement system was sized, where the structure will be paving stone, transition layer, base, subbase and an improvement, it also has a porous concrete system, which accumulates part of the runoff, this is It is made up of porous concrete, a permeable subbase and a 250mm diameter perforated tube. The other proposed system is a floodable parterre for an area of 11.65Ha, with floodable gardens to cover the runoff produced by the impervious area. It is concluded that the implementation of the methodology serves for the correct design of a sustainable urban drainage system.