Browsing by Author "Alves, Raul"
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- Hydraulic Planning in Insular Urban Territories: The Case of Madeira Island—Ribeira Brava, TabuaPublication . Lousada, Sérgio; Alves, Raul; Fernandes, Mário; Gonçalves, LeonardoThis study’s primary goal was to conduct an analysis of the flood propensity of the Tabua (Ribeira Brava) drainage basin’s main watercourse. In addition to that, this study also recommends two different methodologies in order to mitigate flood impacts, namely by dimensioning a detention basin and adjusting the riverbed roughness coefficient. Regarding the study on the flood propensity, it was necessary to resort to geomorphological data, which were obtained when characterizing the watershed; these data were crucial to determining the expected peak flow rate, according to the Gumbel distribution methodology and considering a 100-year return period, and to perform necessary tasks in the SIG ArcGIS 10.5 software. Lastly, the drainage capacity of this drainage basin’s river mouth was also analyzed in order to conclude whether it would have the capacity to drain the total volume of rainwater if an extreme flood event were to happen. Indeed, the main results show that this watershed’s river mouth does not have the necessary drainage capacity to cope with an extreme event for the return period that was considered. As a consequence, the two aforementioned mitigation measures were developed considering the Tabua (Ribeira Brava) drainage basin’s specific features. The size of the detention basin was estimated through the Dutch method and the simplified triangular hydrograph method, while the adjustment of the roughness coefficient was considered a valid solution to enhance the drainage capacity of this river mouth.
- Hydraulic Planning in Insular Urban Territories: The Case of Madeira Island—São João Stream, Funchal, PortugalPublication . Lousada, Sérgio; Alves, Raul; Fernandes, Mário; Gonçalves, Leonardohis study’s primary goal was to conduct an analysis regarding the flood susceptibility of the main watercourse of the São João (Funchal) drainage basin. In addition, if proven necessary, we also aimed to suggest mitigation measures, such as sizing a detention basin and promoting adjustments of the riverbed’s roughness coefficient. This study also resorted to geomorphological data—obtained during the watershed characterization process—that were then utilized in the SIG ArcGIS software, in order to estimate the expected peak flow rate, considering a return period of 100 years using the Gumbel distribution. Finally, the Manning–Strickler equation was utilized to determine the river discharge point’s drainage capacity; the reason for that was to verify whether its drainage capacity was sufficient to drain the entire volume of rainwater associated with an extreme flood event. In summary, the results obtained by this study indicate that the drainage capacity of the river discharge point of the São João watershed (Funchal) is insufficient when considering an extreme flood event, for a return period of 100 years. Hence, it became necessary to explore the two aforementioned mitigation measures: first, regarding the detention basin, its sizing was calculated through both the Dutch method and the simplified triangular hydrograph method; second, aiming to increase the drainage capacity of the river discharge point, it is suggested that the roughness coefficient should also be modified.
- Local Housing Strategy: Analysis of Importance and Implementation in Machico Municipality, MadeiraPublication . Alves, Raul; Lousada, Sérgio; Cabezas, José; Gómez, José Manuel NaranjoThis article presents a detailed analysis of the local housing strategies (ELH) in the Mu nicipality of Machico, Madeira, examining the diagnosis of housing needs, proposed solutions, and projected goals for the future. In addition to addressing the rehabilitation of private and public hous ing and the increase in housing supply, the study also explores how ELH relate to the new generation of housing policies and the public support program for promoting housing solutions for vulnerable people. It is important to note that the implementation of ELH in Machico also has a positive impact on the local landscape and climate resilience, promoting the conservation of important forest areas for the production and management of natural resources.
- The Importance of the Strategic Urban Rehabilitation Plan in the Sustainable Development of the Municipality of MachicoPublication . Alves, Raul; Lousada, Sérgio; Cabezas, José; Gómez, José Manuel NaranjoThrough the requalification of buildings, the improvement of public spaces and the reorganization of motorized and pedestrian circulation, success is achieved, and thus the trend of decay of the urban fabric is reversed, transforming and returning urban centers to the people. The Strategic Plan for Urban Rehabilitation of Machico is an important document for the sustainable development of the city, which will contribute to social harmony and the improvement of the people’s quality of life, reducing the environmental impact of human mobility, boosting the economy, and creating conditions for the usufruct of the city of Machico in terms of mobility. The current article arises with the main objective of analyzing the Strategic Plan for Urban Rehabilitation of the Municipality (PERU) of Machico, which is an essential tool for the sustainable development of Machico. It is also important to emphasize the dimension of PERU in local economic development, from the perspective of the real estate market and in public investment. The results obtained showed that the Municipality of Machico faces some challenges in the implementation of sustainable urban development programs, due to the recent financial and economic crisis, which could limit the existing funding to fund sustainable urban development programs. It is from this plan, from the solutions determined for the rehabilitation of the public space in terms of security and mobility, based on the urban operations that are being developed, that it will be possible to offer the population a sustainable future.