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    Hydraulic and Hydrologic Invariance: Effectiveness of Green Roofs and Permeable Pavements

    Source: Journal of Irrigation and Drainage Engineering:;2025:;Volume ( 151 ):;issue: 002::page 04025001-1
    Author:
    Erica Orsi
    ,
    Gaetano Crispino
    ,
    Michele Iervolino
    ,
    Corrado Gisonni
    DOI: 10.1061/JIDEDH.IRENG-10304
    Publisher: American Society of Civil Engineers
    Abstract: In this paper, the capability of selected sustainable drainage systems (SuDS) to accomplish hydraulic hydrological invariance (HHI) was analyzed. The HHI principle is achieved if both the peak flow and the volume runoff of the urbanized catchment remain equal after any increase of impervious surfaces. In particular, the hydraulic performance of green roofs and permeable pavements was evaluated by considering a standard case study frequently encountered in design practices. The numerical simulations were conducted using Storm Water Management Model (SWMM) software. The efficiency of SuDS was assessed by varying the effective impervious area (EIA) along with the main rainfall characteristics. The findings of this research show that the global performance of a SuDS-retrofitted catchment improves with the EIA reduction. Moreover, the rainfall characteristics, namely the rainfall duration and the return period, influence the hydrologic efficiency moderately. The experimental results confirm the positive impact of SuDS in mitigating the effect of the escalating urbanization on the existing urban drainage system. This effect was evaluated by quantifying the reduction of the choking occurrence in the sewer pipe and structures downstream the urban lot. However, the HHI principle is barely achievable with the standard implementation of SuDS, as also proved in a design graph to appraise how close SuDS are to HHI compliance.
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      Hydraulic and Hydrologic Invariance: Effectiveness of Green Roofs and Permeable Pavements

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4304719
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    contributor authorErica Orsi
    contributor authorGaetano Crispino
    contributor authorMichele Iervolino
    contributor authorCorrado Gisonni
    date accessioned2025-04-20T10:26:16Z
    date available2025-04-20T10:26:16Z
    date copyright1/7/2025 12:00:00 AM
    date issued2025
    identifier otherJIDEDH.IRENG-10304.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4304719
    description abstractIn this paper, the capability of selected sustainable drainage systems (SuDS) to accomplish hydraulic hydrological invariance (HHI) was analyzed. The HHI principle is achieved if both the peak flow and the volume runoff of the urbanized catchment remain equal after any increase of impervious surfaces. In particular, the hydraulic performance of green roofs and permeable pavements was evaluated by considering a standard case study frequently encountered in design practices. The numerical simulations were conducted using Storm Water Management Model (SWMM) software. The efficiency of SuDS was assessed by varying the effective impervious area (EIA) along with the main rainfall characteristics. The findings of this research show that the global performance of a SuDS-retrofitted catchment improves with the EIA reduction. Moreover, the rainfall characteristics, namely the rainfall duration and the return period, influence the hydrologic efficiency moderately. The experimental results confirm the positive impact of SuDS in mitigating the effect of the escalating urbanization on the existing urban drainage system. This effect was evaluated by quantifying the reduction of the choking occurrence in the sewer pipe and structures downstream the urban lot. However, the HHI principle is barely achievable with the standard implementation of SuDS, as also proved in a design graph to appraise how close SuDS are to HHI compliance.
    publisherAmerican Society of Civil Engineers
    titleHydraulic and Hydrologic Invariance: Effectiveness of Green Roofs and Permeable Pavements
    typeJournal Article
    journal volume151
    journal issue2
    journal titleJournal of Irrigation and Drainage Engineering
    identifier doi10.1061/JIDEDH.IRENG-10304
    journal fristpage04025001-1
    journal lastpage04025001-13
    page13
    treeJournal of Irrigation and Drainage Engineering:;2025:;Volume ( 151 ):;issue: 002
    contenttypeFulltext
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