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A dimensionless procedure for the design of infiltration trenches
Author(s) -
Creaco Enrico,
Franchini Marco
Publication year - 2012
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.5942/jawwa.2012.104.0124
Subject(s) - infiltration (hvac) , dimensionless quantity , surface runoff , trench , hydraulic conductivity , environmental science , saturation (graph theory) , kinematic wave , soil water , geotechnical engineering , hydrology (agriculture) , soil science , geology , mechanics , mathematics , materials science , physics , meteorology , ecology , layer (electronics) , combinatorics , composite material , biology
This article presents a procedure for the design of infiltration trenches—devices used to attenuate surface runoff in areas featuring soils with medium or high infiltration capacity. In this procedure, the upstream catchment area is represented through the kinematic model, and the balance of incoming and outgoing flow rates and stored water volumes is used to represent the trench. The outgoing flow rates infiltrating the surrounding soil during the rain event are calculated by means of a constant infiltration capacity equal to the saturation hydraulic conductivity of the soil. The procedure exploits a dimensionless approach and the dimensionless graphs obtained can be easily used. Comparison of the design configuration derived according to the proposed procedure with the results of a more complex model based on time‐varying infiltration capacity and area attests to the reliability of the simpler procedure.