Runoff and infiltration characteristics of pavement structures--review of an extensive monitoring program.

Institute of Urban Water Management, University of Kaiserslautern, Paul-Ehrlich-Strasse 14, Kaiserslautern, Germany.
Water Science & Technology (Impact Factor: 1.1). 02/2007; 56(10):133-40. DOI:10.2166/wst.2007.750
Source: PubMed

ABSTRACT The stormwater runoff and infiltration performance of permeable pavements has been systematically evaluated within an intensive monitoring program. The primary objective of the investigation was to generate a broad database, which enables the development of an advanced simulation module for urban drainage modelling. Over 160 field and lab scale experiments have been completed and analyzed for surface runoff and infiltration characteristics. The test series include several pavement types under various boundary conditions such as diverse precipitation impacts, varying surface slope and layer construction as well as different stages of surface clogging and several base and subgrade layer characteristics. The results represent a reliable and comprehensive database that allows profound conclusions and substantial recommendations.

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    ABSTRACT: The stormwater runoff and infiltration performance of pavement structures has been systematically evaluated within an extensive research project. Over 230 field and lab scale experiments have been completed and analyzed for surface runoff and infiltration characteristics as well as for water content changes inside the construction. The test series comprises several types of conventional and explicitly permeable structures under various boundary conditions. In addition, the field data have been superimposed on the results of former infiltration tests accomplished by several researchers to a unique database containing over 350 single infiltration tests and enabling substantive statistical analyses. Based on these widespread monitoring results, the primary characteristics of the specific infiltration phenomenon on pavements have been determined. The analyses yield to an identification of the governing constraints, to a quantification of their impacts on the infiltration capacity of the entire pavement construction and finally to the development of an advanced conceptual approach for modelling runoff and infiltration processes on pavement structures. Moreover, profound recommendations for type specific infiltration rates, runoff coefficients and parameter values for conventional applications have been worked out, which facilitate planners a better estimation of the stormwater runoff contributed by the manifold types of more or less permeable pavements.
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