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Infiltration: Sizing and modeling (view source)
Revision as of 02:04, 12 September 2017
, 7 years agono edit summary
__NOTOC__
__NOTOC__
To calculate the require depth of an infiltration facility in a specified footprint area...
To calculate the required footprint area of an infiltration facility with a known depth constraint....
To calculate the infiltration time of ponded water on the surface of a facility footprint...
To calculate the drawdown time of an underground infiltration facility...
The sizing calculations require that most of the following parameters be known or estimated.
The sizing calculations require that most of the following parameters be known or estimated.
The exceptions are the depth (''d'') and Permeable area (''P''), as only one of these is required to find the other.
The exceptions are the depth (''d'') and Permeable area (''P''), as only one of these is required to find the other.
Note that some of these parameters are limited:
Note that some of these parameters are limited:
#The ''maximum'' total depth will be limited by construction practices i.e. not usually > 2 m.
#The ''maximum'' total depth will be limited by construction practices i.e. usually ≤ 2 m.
#The ''maximum'' total depth may be limited by the [[Infiltration| conditions underground]] e.g. the groundwater or underlying geology/infrastructure.
#The ''maximum'' total depth may be limited by the [[Infiltration| conditions underground]] e.g. the groundwater or underlying geology/infrastructure.
#The minimum total depth may be limited by the need to support vegetation i.e. not < 0.6 m.
#The minimum total depth may be limited by the need to support vegetation i.e. not < 0.6 m.