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Published bySheila Hamilton Modified over 9 years ago
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Rodrigo Concha Jopia FLUMEN Research Group Technical University of Catalonia Barcelona TECH
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Don’t forget to do a small report including: catchment discretization FINISHED calibration/validation FINISHED, sewer network diagnosis for a T return period design rainfall (hopefully finished…) This report has to be uploaded tomorrow Wednesday afternoon T has been changed: Team 1: 10 years Team 2: 15 years Team 3: 20 years Team 4: 25 years
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After the diagnosis of the La Riereta sewer network (analysis under a T year return period rainfall) each team has to perform a particular analysis. These specific tasks are detailed next
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Network rehabilitation changing sewer characteristics: cross sections (shape and dimensions), slopes and materials Do not change the plant layout of sewer network Try to reduce the flooding volume (hopefully 0) Hydraulic performance of restored network should be better than the non-restored one Try that all network works under free surface flow
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Network rehabilitation using detention basins Use of Storage Unit and Weir/Orifice/Pump SWMM 5’objects Try to reduce the flooding volume (hopefully 0) Hydraulic performance of restored network should be better than the non-restored one
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Network rehabilitation using detention basins Use of Storage Unit and Weir/Orifice/Pump SWMM 5’objects Define initial properties: SU: max depth, d/As relationship Outlet Regulators: cross sections, dimensions, discharge coefficients
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Network rehabilitation changing the impervious surface catchment area Use of catchment representation method Some LIDs: infiltration trenches, porous pavements, vegetative swales, etc. Try to reduce the flooding volume (Hopefully 0) Hydraulic performance of restored network should be better than the non-restored one
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Network rehabilitation changing the impervious surface catchment area catchment representation method
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Network analysis using a 3-year rainfall time serie data, and to find the network sewer security level for surchage and for flooding Make a continuous simulation; consider evaporation losses Use of Statistical tool of SWMM 5 for analysis purposes: flooding frecuency) Rainfall analysis: consider duration, mean intensity, volume and peak intensity
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Network analysis using a 3-year rainfall time serie data, and to find the network sewer security level for surchage and for flooding Use of Statistical tool of SWMM 5 for analysis purposes: flooding frecuency)
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More details about modelling using SWMM 5 can be found in Storm Water Management Model Applications Manual It can be downloaded from the official SWMM web page http://www.epa.gov/nrmrl/wswrd/wq/models/swmm/#Downloads http://www.epa.gov/nrmrl/wswrd/wq/models/swmm/#Downloads
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